Tag Archives: machine lifting

China Professional S Series Helical Worm Geared Reducer for Lifting Machine

Product Description

 

Product Description

Product Features

High modular design, biomimetic surface with owned intellectual property right.
Adopt German worm hob to process the worm wheel.
With the special gear geometry, it gets high torque, efficiency and long life circle.
It can achieve the direct combination for 2 sets of gearbox.
Mounting mode: foot mounted, flange mounted, torque arm mounted.
Output shaft: CHINAMFG shaft, hollow shaft.

Main applied for
Chemical industry and environmental protection
Metal processing
Building and construction
Agriculture and food
Textile and leather
Forest and paper
Car washing machinery

Detailed Photos

 

Product Parameters

Technical data:

Housing material

Cast iron/Ductile iron

Housing hardness

HBS190-240

Gear material

20CrMnTi alloy steel

Surface hardness of gears

HRC58°~62 °

Gear core hardness

HRC33~40

Input / Output shaft material

42CrMo alloy steel

Input / Output shaft hardness

HRC25~30

Machining precision of gears

accurate grinding, 6~5 Grade

Lubricating oil

GB L-CKC220-460, Shell Omala220-460

Heat treatment

tempering, cementiting, quenching, etc.

Efficiency

94%~96% (depends on the transmission stage)

Noise (MAX)

60~68dB

Temp. rise (MAX)

40°C

Temp. rise (Oil)(MAX)

50°C

Vibration

≤20µm

Backlash

≤20Arcmin

Brand of bearings

China top brand bearing, HRB/LYC/ZWZ/C&U. Or other brands requested, SKF, FAG, INA, NSK.

Brand of oil seal

CHINAMFG — ZheJiang or other brands requested

 

Our Advantages

 

 

Certifications

Packaging & Shipping

Company Profile

Xihu (West Lake) Dis.ng Transmission Equipment Co., Ltd. located HangZhou city, ZHangZhoug, as 1 professional manufacturer and exporter of cycloidal pin wheel reducer,worm reducer, gear reducer, gearbox , AC motor and relative spare parts, owns rich experience in this line for many years.

We are 1 direct factory, with advanced production equipment, the strong development team and producing capacity to offer quality products for customers.

Our products widely served to various industries of Metallurgy, Chemicals, lifting,mining,Petroleum,textile,medicine,wooden etc. Main markets: China, Africa,Australia,Vietnam, Turkey,Japan, Korea, Philippines…

Welcome to ask us any questions, good offer always for you for long term business.

FAQ

Q: Are you trading company or manufacturer?
A: We are factory.
 

Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock.
 

Q: Can we buy 1 pc of each item for quality testing?
A: Yes, we are glad to accept trial order for quality testing.

Q:How to choose a gearbox which meets your requirement?
A:You can refer to our catalogue to choose the gearbox or we can help to choose when you provide
the technical information of required output torque, output speed and motor parameter etc.

Q: What information shall we give before placing a purchase order?
A:a) Type of the gearbox, ratio, input and output type, input flange, mounting position, and motor informationetc.
b) Housing color.
c) Purchase quantity.
d) Other special requirements.

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Application: Motor, Machinery, Marine, Agricultural Machinery
Hardness: Hardened Tooth Surface
Installation: 90 Degree
Layout: Coaxial
Gear Shape: Worm Gear
Step: Single-Step

winch drive

Are there innovations or advancements in winch drive technology that have emerged recently?

In recent years, there have been notable innovations and advancements in winch drive technology that have improved performance, efficiency, and safety. Here’s a detailed explanation of some of the recent innovations and advancements in winch drive technology:

  • Smart and Connected Winch Drives:

One of the significant advancements in winch drive technology is the integration of smart and connected features. Winch drives are now equipped with sensors, communication capabilities, and data processing capabilities, allowing them to be part of the Internet of Things (IoT) ecosystem. These smart winch drives can collect and analyze data in real-time, enabling remote monitoring, predictive maintenance, and performance optimization. They can communicate with other devices and systems, facilitating integration into larger control networks and automation systems.

  • High-Efficiency Motor Technology:

Advancements in motor technology have contributed to higher efficiency in winch drives. Brushless DC (BLDC) motors and energy-efficient AC motors are becoming more prevalent in modern winch drives. These motors offer improved power density, higher torque-to-weight ratio, and better overall energy efficiency compared to traditional brushed motors. Additionally, advancements in motor control algorithms and variable frequency drive (VFD) technology allow for precise control and optimization of motor performance, resulting in increased efficiency and reduced energy consumption.

  • Regenerative Braking:

Regenerative braking is a recent innovation in winch drive technology that improves energy efficiency. When a winch drive applies braking force to control the descent of a load, regenerative braking allows the drive to convert the braking energy into electrical energy. This electrical energy can be fed back into the power supply or stored in batteries for later use. By recovering and reusing energy that would otherwise be wasted as heat, regenerative braking reduces overall energy consumption and increases the efficiency of winch drives.

  • Advanced Control and Safety Systems:

Winch drives now incorporate advanced control and safety systems that enhance their performance and safety. These systems utilize advanced algorithms, real-time data processing, and precise feedback control to optimize the operation of winch drives. They offer features such as load monitoring, automatic load balancing, anti-sway control, and intelligent speed control. Additionally, safety features like emergency stop functions, overload protection, and fault diagnostics are integrated to ensure safe operation and prevent equipment damage or accidents.

  • Improved Materials and Construction:

Advancements in materials and construction techniques have also contributed to the development of more efficient and durable winch drives. The use of lightweight and high-strength materials, such as advanced alloys and composites, improves the power-to-weight ratio of winch drives. Precision machining and advanced manufacturing processes enhance the overall reliability and performance of winch drive components. These advancements result in winch drives that are more compact, reliable, and capable of handling higher loads while maintaining efficiency.

  • Intuitive User Interfaces:

Recent innovations in winch drive technology have focused on improving user interfaces and operator experience. Intuitive touchscreens, graphical user interfaces (GUIs), and ergonomic control panels provide operators with easy-to-use interfaces for monitoring and controlling winch drives. These user interfaces offer real-time feedback, visualizations, and diagnostic information, making it easier for operators to operate winch drives safely and efficiently.

In summary, recent years have seen significant innovations and advancements in winch drive technology. The integration of smart and connected features, high-efficiency motor technology, regenerative braking, advanced control and safety systems, improved materials and construction, and intuitive user interfaces have all contributed to improved performance, efficiency, and safety in winch drives.

winch drive

What maintenance practices are recommended for winch drives to ensure optimal functionality?

Proper maintenance practices are essential for ensuring the optimal functionality and longevity of winch drives. Regular maintenance helps prevent breakdowns, reduces the risk of accidents, and maximizes the performance of the winch drive. Here are some recommended maintenance practices for winch drives:

  • Inspection:

Regular visual inspections should be conducted to identify any signs of wear, damage, or loose components. Inspect the winch drive housing, motor, gears, and control components for any abnormalities. Look for leaks, corrosion, or excessive dirt accumulation. If any issues are detected, they should be addressed promptly to prevent further damage or performance degradation.

  • Lubrication:

Proper lubrication is crucial for optimal winch drive functionality. Follow the manufacturer’s guidelines for the type and frequency of lubrication. Apply lubricants to the bearings, gears, and other moving parts as recommended. Regular lubrication reduces friction, minimizes wear, and ensures smooth operation.

  • Tension Adjustment:

Check and adjust the tension of the winch drive’s cables or ropes regularly. Proper tension ensures efficient and safe operation. Follow the manufacturer’s recommendations for the appropriate tension levels and adjustment procedures. Incorrect cable tension can lead to slippage, reduced pulling power, or cable damage.

  • Electrical Connections:

Inspect the electrical connections of the winch drive for any loose or corroded terminals. Tighten or clean the connections as necessary to maintain proper electrical conductivity. Loose or faulty connections can result in power loss, erratic operation, or electrical hazards.

  • Control System Testing:

Regularly test the control system of the winch drive to ensure proper functionality. Check the operation of switches, buttons, and remote controls. Verify that the control system is responding correctly to commands and that all safety features are functioning as intended. Any issues with the control system should be addressed promptly to maintain safe and reliable operation.

  • Environmental Protection:

Take measures to protect the winch drive from harsh environmental conditions. Keep the winch drive clean and free from dirt, debris, and moisture. If the winch drive is exposed to corrosive substances or extreme temperatures, consider using protective covers or enclosures. Protecting the winch drive from environmental factors helps prevent damage and ensures optimal performance.

  • Professional Servicing:

Periodically engage in professional servicing of the winch drive. Professional technicians can perform detailed inspections, maintenance, and repairs that may require specialized knowledge or equipment. Follow the manufacturer’s recommendations regarding the frequency and scope of professional servicing to keep the winch drive in optimal condition.

It’s important to note that maintenance practices may vary depending on the specific type of winch drive and its intended application. Always refer to the manufacturer’s guidelines and instructions for the specific winch drive model to ensure proper maintenance procedures are followed.

winch drive

Can you explain the key components and functions of a winch drive mechanism?

A winch drive mechanism consists of several key components that work together to provide controlled pulling or lifting capabilities. Each component has a specific function that contributes to the overall operation of the winch drive. Here’s a detailed explanation of the key components and their functions:

  • Power Source:

The power source is the component that provides the energy to drive the winch mechanism. It can be an electric motor, hydraulic system, or even a manual crank. Electric motors are commonly used in modern winches due to their efficiency, controllability, and ease of operation. Hydraulic systems are often employed in heavy-duty winches that require high pulling capacities. Manual winches, operated by hand-cranking, are typically used in lighter applications or as backup systems. The power source converts the input energy into rotational motion, which drives the other components of the winch mechanism.

  • Gearbox or Transmission:

The gearbox or transmission is responsible for controlling the speed and torque output of the winch drive. It consists of a series of gears arranged in specific ratios. The gears are engaged or disengaged to achieve the desired speed and torque requirements for the application. The gearbox allows the winch drive to provide both high pulling power or low-speed precision, depending on the needs of the task. It also helps distribute the load evenly across the gear teeth, ensuring smooth and reliable operation.

  • Drum or Spool:

The drum or spool is a cylindrical component around which the cable or rope is wound. It is typically made of steel or other durable materials capable of withstanding high tension forces. The drum is connected to the rotational output of the gearbox or transmission. As the gearbox rotates, the drum winds or unwinds the cable, depending on the direction of rotation. The diameter of the drum determines the pulling or lifting capacity of the winch drive. A larger drum diameter allows for a greater length of cable to be wound, resulting in increased pulling power.

  • Cable or Rope:

The cable or rope is the element that connects the winch drive to the load being pulled or lifted. It is typically made of steel wire or synthetic materials with high tensile strength. The cable is wound around the drum and extends out to the anchor point or attachment point of the load. It acts as the link between the winch drive and the object being moved. The choice of cable or rope depends on the specific application requirements, such as the weight of the load, environmental conditions, and desired flexibility.

  • Braking System:

A braking system is an essential component of a winch drive mechanism to ensure safe and controlled operation. It prevents the cable or rope from unwinding uncontrollably when the winch is not actively pulling or lifting a load. The braking system can be mechanical or hydraulic, and it engages automatically when the winch motor is not applying power. It provides a secure hold and prevents the load from slipping or releasing unintentionally. The braking system also helps control the descent of the load during lowering operations, preventing sudden drops or free-falls.

  • Control System:

The control system allows the operator to manage the operation of the winch drive. It typically includes controls such as switches, buttons, or levers that enable the activation, direction, and speed control of the winch. The control system can be integrated into the winch housing or provided as a separate control unit. In modern winches, electronic control systems may offer additional features such as remote operation, load monitoring, and safety interlocks. The control system ensures precise and safe operation, allowing the operator to adjust the winch drive according to the specific requirements of the task.

In summary, a winch drive mechanism consists of key components such as the power source, gearbox or transmission, drum or spool, cable or rope, braking system, and control system. The power source provides the energy to drive the winch, while the gearbox controls the speed and torque output. The drum or spool winds or unwinds the cable, which connects the winch drive to the load. The braking system ensures safe and controlled operation, and the control system allows the operator to manage the winch’s performance. Together, these components enable winch drives to provide controlled pulling or lifting capabilities in a wide range of applications.

China Professional S Series Helical Worm Geared Reducer for Lifting Machine  China Professional S Series Helical Worm Geared Reducer for Lifting Machine
editor by CX 2024-04-13

china sales Best Motorized Machine Worm Gear Screw Jack, Electric Long Stroke Machine Screw Jack for Sale, Anti-Rotation Ball Worm Gear Electric Screw Jack for Lifting manufacturers

Item Description

Greatest CZPT ized CZPT Worm Gear CZPT Jack, CZPT ctric CZPT Stroke CZPT CZPT Jack for Sale, Anti-Rotation Ball Worm Equipment CZPT ctric CZPT Jack for CZPT ing.

Motorized screw jack can also be named CZPT ctric screw jack, which involves a CZPT screw jack and an electric powered motor. The CZPT ized Jacks have higher efficiency than handbook screw jack. There are two varieties CZPT screw jack for motorized screw jacks, they are self-locking machine screw jack or higher precision ball screw jack. The motor can be a high-precision servomotor, stepping motor, geared motor, CZPT reducer, bevel CZPT cal gearmotor, worm CZPT cal gearmotor, three-period motor, or one period motor, and 12v, 24v, 48v Brush or Brushless DC motors and DC equipment motors, and so on. Note: If it is a electric powered ball screw jack, a brake motor or an external locking system is necessary to preserve the position. CZPT ctric screw jacks provide the most financial options for a vast range of industrial apps and the load potential up to a hundred-ton as regular.

Three Buildings (Link) for CZPT ized CZPT Jacks:
one. Buildings 1 (Foot Mounted): input shafts(worm), coupling, and B3 foot mount motor.
two. Constructions 2 (Flange Mounted): screw jack with motor flange, and B5, B14, or NEMA flange motor. 
three. Buildings 3 (Flange Mounted): screw jack with motor flange, coupling, and B5, B14, or NEMA flange motor. 
Electrical CZPT jack carry Perform: The CZPT ctric screw jack actuator is a basis jack-up portion, accomplish the features these kinds of as lifting, fall, thrust and inverting through CZPT drives screw, since it is driven by electric motor, it has greater performance than manual screw jack.

Motorized CZPT Steel CZPT Jack 5ton Inverted with Clevis Stop and Hand Wheel

100kN motorized screw jacks with traveling nut for electric jacking system. Cubic electric powered lifting screw jack load capability 100 kN, self locking ACME screw diameter 55mm, pitch 9mm, upright mount, rotating screw type, stroke 500mm, ratio 36:1 (a single rpm input journey length .25mm), basic conclude, right shaft and still left motor adapter, hooked up bronze lifting nut, double bellows boots, flange block bearing, and 4 kw brake motor with B14 motor flange.

50KN electric CZPT screw jacks with a few-section motor. Motorised screw jacks 50 KN load capacity with a compact and versatile cubic housing, self locking Trapezoidal screw diameter 40 mm, pitch(lead) 7mm, upright mount, travelling screw kind, stroke 1500mm, ratio 7:1 (1 rpm input vacation size 1mm), threaded conclude and rod stop bearing, remaining aspect motor flange and proper enter shaft(worm). Add-ons incorporate three-phase two-velocity motor(Y100L-8P/4P-.85KW/1.5KW, 480V/60HZ/3PH), protecting pipe, rod stop and proximity switches.

Compact cubic 25KN motorized CZPT screw jack offers greatest adaptability to each and every distinct application. For this motorized jack with dc 24v CZPT reducer characteristics: limited stroke 50mm, top plate(flange) end, vertical mount, translating design and style, slowest ratio 1/24, trapezoidal screw Tr thirty x 6, left enter shaft(worm) and right motor adapter. Equipment: dc 24v motor attaches RV30 CZPT box,  motor flange, and protecting tube.

Cubic style 25KN electrical worm screw jack offers modern aesthetics and versatile mounting on two faces of the gearbox, whilst getting rid of the want for upright and inverted variants. For this motorized jacks, upright mount, translating screw type, stroke 500mm, slowest gear ratio 24:1, self locking ACME screw diameter thirty mm, pitch(guide) 6mm, thread finish brings together with rod end as 1, left input shaft(worm) and proper motor adapter. Accessories: dc 24v motor with vertical mount(motor flange), defense tube, bellows boots and rod finishes.

10ton electrical motor CZPT screw jack with CZPT box reducer attributes: highest static load potential 10 tons, worm screw fifty eight mm diameter, pitch 12mm, stroke seventy five mm, greatest ratio 1/8, inverted kind jack, no rotation keyed screw design. Equipment: .75kw CZPT motor reducer, motor flange, restrict switches, protecting tube, and plain finish.

twenty five ton electrical equipment screw actuators functions: The motor is parallel mount with spindle, ideal for limit space. CZPT imum static load capability twenty five tons, lifting screw 90 mm diameter, pitch 16mm, stroke 900 mm, slowest ratio 1/32, inverted kind jack, translating screw design and style. Components: 4kw 3 phase 380V AC motor with gearbox, motor flange, clevis stop, and defense tube.

25KN electric touring nut screw jack features: worm screw 26 mm diameter, pitch 5mm, stroke one thousand mm, slow equipment ratio 1/24, vertical lifting, travelling nut rotating style, connected copper lifting nut, flange block bearing, motor flange, and .75 kw motor.

five Ton CZPT CZPT Jacks with Geared CZPT s Characteristics: maximum static load potential 5 tons, worm screw 40 mm diameter, pitch 7mm, stroke one hundred fifty mm, slowest ratio 1/6, upright, no rotation keyed screw style. Equipment: 1.1kw bevel-helical gear motor, incremental encoder, motor flange, restrict switches, protective tube, and CZPT common top plate conclude.

two.5 Ton DC Gear CZPT CZPT Jack with CZPT Controller features: highest static load capability 2.5 tons, worm screw thirty mm diameter, pitch 6mm, stroke 900 mm, highest ratio 1/6, upright type jack, translating screw design and style, clevis end. Equipment: 24v gear motor, motor flange, dc motor controller and protecting tube.

5 Ton CZPT ctric CZPT Jack with CZPT ing Nut Connected Bevel-helical Equipment CZPT . CZPT electrically screw jack load ability 5 ton, self locking ACME screw diameter 38mm, pitch 6mm, inverted mount, rotating screw layout, stroke 900mm, ratio 1/24 (1 rpm input travel length .25mm), basic end, appropriate enter shaft and left motor adapter. Attached 3-period electrical motor with bevel-helical gearbox, and copper vacation nut.

10 Ton 220V AC Single Phase CZPT ctric Worm Gear CZPT Jack features: maximum static load ability 10 tons, worm screw fifty eight mm diameter, pitch 12mm, stroke 1500 mm, maximum ratio 1/8, inverted type jack, travelling screw design. Accessories: 1.5kw 220VAC one period motor with bevel equipment reducer, motor flange, rubber bellows, protecting tube, and best plate stop.

Cargo and Packing Pictures 
Shipping and delivery:
one. CZPT freight: seaport to seaport, price tag phrases CIF, FOB, EXW, CFR and so on.
two. Air freight: airport to airport, price terms EXW, CRF and many others.
three. Air courier: DHL, FEDEX, UPS, TNT door to doorway cargo, price tag conditions DDU, CPT etc.
Packing: 
a hundred% common exporting plywood circumstances. 
Note: Intercontinental Exporting Normal CZPT Materials with Free Fumigation.

Firm Profiles
JACTON Market Co.,Ltd (VAT No.: 9144190007026567X3, registered Money 500000CNY) is a top maker and supplier of CZPT Jacks (Mechanical Actuators), Bevel Gearboxes, CZPT ing Programs, CZPT ctric CZPT Actuators, Gearmotors and CZPT Reducers, CZPT s CZPT Motion and CZPT Transmission Products in CZPT . We are found in Chang An, Xihu (West CZPT ) Dis. guan, CZPT g dong in CZPT . We are an audited skilled manufacturer and provider by SGS (Serial NO.: QIP-ASI192186) and BV (Serial NO.: MIC-ASR257162) businesses. We have a stringent quality system, with senior engineers, knowledgeable experienced staff and practiced sales teams, and persistently give the CZPT ers with the greatest engineered answer for precision linear actuation, CZPT transmission and mechanical jacking methods. CZPT Industries assures good quality, dependability, overall performance and value for present-day demanding industrial applications.

Business Advantages
* One of the largest orders with 1750 models screw carry jacks.
* Standard merchandise with Second Drawings(DXF, DWG, PDF) and 3D CAD Product(Action).
* one hundred% high quality assured with double high quality inspections. Authentic Inspection Studies, Procedure Guide, and Ebook Catalogue are set into the offers.
* a hundred% protection transportation with robust standard export plywood circumstances components (free fumigation).
* CZPT normal components for all standard products.
* CZPT layout CZPT , CZPT service CZPT , Free CZPT suggestions and CZPT er label CZPT .

Merchandise Record
* Guide CZPT Jacks
* CZPT ctric CZPT Jacks
* CZPT Jacks Series:

Cubic CZPT Jack JTC Series, CZPT CZPT Jack JTW Series, Trapezoidal CZPT Jack JT Collection, Worm CZPT Jack JTM Sequence, CZPT Steel CZPT Jack JSS Series, By means of Gap CZPT Jack JTH Sequence, Ball CZPT Jack JTB Sequence, Cubic Ball CZPT Jack JTD Sequence, Bevel Gear CZPT Jack JTS Sequence and JTG Collection, and CZPT ctric Cylinder JTE Series.
* Bevel Gearboxes Collection:
Cubic Bevel Gearbox JTP Series, Hollow Shaft Gearbox JTPH Series, Input Flange Gearbox JTPF Collection, Input Flange and Hollow shaft Gearbox JTPG Sequence, CZPT Metal Gearbox JTP Collection, CZPT Gearbox JTA Sequence, and Bevel Gearboxes JT Series.
* CZPT Jack CZPT ing Techniques and Accessories:
2jacks lifting system, 3jacks lifting system, 4jacks lifting system, 6jacks lifting method, 8jacks lifting method……14jacks lifting system. CZPT ing methods accessories protect ac, dc motors, geared motors, servo motors, stepper motors, handwheels, couplings, CZPT joints, telescopic CZPT joints, connecting shafts, cardan shafts, restrict switches, proximity switches, security nut, vacation nut, rod finishes, cease nuts, pillow block bearings, flange blocks, motor flange nema or iec, encoder, potentiometer, frequency converter, situation indicators, trunnion plate, and trunnion mounting brackets.
* CZPT ctric CZPT Actuators Sequence:
Electro CZPT Actuators LA Sequence, CZPT ctro CZPT Actuators LAP Collection.
* Gear Reducers Series:
Helical Gear Reducers R Sequence, CZPT cal Bevel Gear Reducers K Collection, Parallel Shaft CZPT cal Gear Reducers F Series, CZPT cal Worm Gear Reducers S Sequence, CZPT cal Gear CZPT GMH/GMV Collection, and Worm Equipment Reducers NMRV Series.

Consumers Distribution Nations
* CZPT ican Nations around the world: United States, Mexico, Canada, Chile, Argentina, Xihu (West CZPT ) Dis.by means of, Brazil, Colombia, Guatemala, Honduras, Panama, Peru.
* CZPT pean International locations: Germany, France, CZPT CZPT dom, CZPT , Spain, Poland, CZPT ia, Netherlands, Belgium, Greece, Czech Republic, Portugal, Sweden, Hungary, Austria, Switzerland, Bulgaria, Denmark, Finland, Slovakia, Norway, Eire, Ga, Slovenia.
* Asian Countries: Malaysia, Indonesia, Singapore, Philippines, Vietnam, Thailand, India, Israel, Cambodia, Myanmar, Sri Lanka, Maldives, Pakistan, Iran, Turkey, Jordan, Saudi Arabia, Yemen, Oman, CZPT Arab Emirates, Qatar, Ga, Armenia.
* CZPT ian Nations: Australia, New Zealand.
* African Countries: Egypt, Ethiopia, Nigeria, South Africa, Zambia, Mozambique.

The lubricating oil external circulation tools of the worm gear reducer equipment has lower oil temperature. The worm gear reducer plans to traverse its energy. The worm gear is manufactured of non-ferrous metallic. Learn information worms are generally made of challenging metal. Therefore, employing a good deal of warmth in the software, coupled with the impact of the ambient temperature, it is challenging to management the temperature of the reducer. Use in the temperature assortment. When the ambient temperature is reduce than 0℃, the working temperature of the worm equipment reducer must be managed at -40℃~40℃. It is recommended to heat or use a low freezing point lubricant ahead of the oil is entirely dissolved.
china  sales Best Motorized Machine Worm Gear Screw Jack, Electric Long Stroke Machine Screw Jack for Sale, Anti-Rotation Ball Worm Gear Electric Screw Jack for Lifting manufacturers