Screw Jack Systems

UNIMEC Screw Jacks – Engineered for Reliable Linear Motion

Mechanical screw jacks are widely used to convert rotary motion into precise linear movement for lifting, lowering, positioning, pushing, and pulling loads. Whether operating individually or as part of a synchronized multi-point lifting system, they provide accurate and dependable motion control across a wide range of industrial applications.

At BIBUS India, we offer UNIMEC Screw Jacks, renowned for their precision engineering, durability, and versatility. The portfolio includes four specialized series designed to meet different application requirements—from economical self-locking lifting solutions to high-speed precision positioning systems.

1. Trapezoidal Screw Jacks

The Trapezoidal Screw Jack is UNIMEC's standard and most widely used mechanical lifting solution. It uses a trapezoidal threaded spindle with a worm gearbox to provide reliable, self-locking linear motion.

Key Features

• Self-locking design under normal operating conditions
• Suitable for lifting, lowering, pushing, pulling, and positioning
• Available with translating screw (TP) and rotating screw (TPR) configurations
• Can be operated individually or in synchronized multi-jack systems
• Compatible with electric, hydraulic, pneumatic, or manual drives
• Multiple gear ratios available to optimize speed and lifting force

Typical Applications

• Industrial lifting tables
• Machine height adjustment
• Conveyor lifting systems
• Material handling equipment
• Steel and metal processing
• Packaging machinery
• Automotive production lines
• Stage and theatre lifting systems

Typical Specifications

Parameter	Value
Operating Principle	Trapezoidal threaded spindle
Load Capacity	Up to approximately 200 tonnes (depending on model)
Configuration	Translating or Rotating Screw
Drive Options	Manual, Electric, Hydraulic, Pneumatic
Main Advantage	Self-locking operation

 

2. Stainless Steel Screw Jacks (X Series)

Designed for hygienic and corrosive environments, the X Series combines the proven performance of trapezoidal screw jacks with AISI 316 stainless steel construction for enhanced corrosion resistance.

Key Features

• AISI 316 stainless steel construction for key exposed components
• Excellent corrosion resistance
• Self-locking design
• Suitable for washdown environments
• Available in translating and rotating screw versions
• Optional corrosion protection for the worm shaft

Typical Applications

• Food and beverage processing
• Pharmaceutical manufacturing
• Biotechnology
• Chemical processing
• Marine and offshore equipment
• Water and wastewater treatment
• Hygienic packaging machinery

Typical Specifications

Parameter	Value
Material	AISI 316 Stainless Steel (main exposed components)
Configurations	XTP & XTPR
Standard Sizes	X204, X306, X407
Main Advantage	Corrosion-resistant and hygienic design

 

 

 

 

 

 

 

3. Technopolymer Screw Jacks (Aleph Series)

The Aleph Series is a lightweight, lubrication-free solution designed for light to medium-duty applications where reduced maintenance and lower weight are priorities.

Key Features

• Glass fibre reinforced technopolymer housing
• Lubrication-free operation under normal conditions
• Lightweight construction
• Self-locking operation
• Low maintenance
• Cost-effective solution for light-duty applications

Typical Applications

• Packaging machinery
• Conveyor adjustment systems
• Assembly automation
• Laboratory equipment
• Adjustable workstations
• Material handling equipment
• Inspection systems

Typical Specifications

Parameter	Value
Housing Material	Glass fibre reinforced technopolymer
Available Models	TP420, TP630, TP740
Operating Temperature	-20°C to +50°C
Main Advantage	Lightweight, lubrication-free operation

 

4. Ball Screw Jacks (K Series)

The K Series Ball Screw Jack is engineered for applications requiring high efficiency, high speed, and precise positioning. By using a recirculating ball screw instead of a trapezoidal thread, it minimizes friction and improves performance in continuous-duty applications.

Key Features

• High mechanical efficiency
• High-speed linear motion
• Excellent positioning accuracy
• Smooth operation
• Suitable for continuous-duty applications
• Available in translating (K) and rotating (KR) configurations
• Easily integrated with servo motor systems

Note: Unlike trapezoidal screw jacks, ball screw jacks are not self-locking. They are back-drivable and typically require a brake or external locking mechanism to hold loads securely.

Typical Applications

• Industrial automation
• Robotics
• Machine tools
• CNC equipment
• Servo-driven lifting systems
• Automated production lines
• Precision positioning systems
• Aerospace assembly fixtures

Typical Specifications

Parameter	Value
Operating Principle	Recirculating Ball Screw
Configurations	K & KR
Drive Options	Electric, Hydraulic, Pneumatic, Manual
Main Advantage	High efficiency and precision positioning

 

Need help selecting the right screw jack for your application?

Contact BIBUS India to discuss your lifting, positioning, or linear motion requirements with our technical experts.

 We deliver complete linear motion solutions backed by application expertise. Our team supports customers in selecting the right screw jack series, configuring synchronized lifting systems, and integrating drive components for reliable machine performance.

Whether your application demands heavy-duty industrial lifting, hygienic operation, lightweight automation, or high-speed precision positioning, UNIMEC Screw Jacks offer a dependable and engineered solution.