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High-Speed Rack & Roller Pinion with Zero-Backlash
Rack and Roller Pinion are excellent alternatives to linear motors, ball screws, and helical or involute rack and pinions. These systems specialize in efficiently converting rotary to linear motion without the limitation of conventional gears, such as low loading capacity and accuracy. They can operate without lubrication and are ideal for high-speed or long-travel applications with unlimited angles.
Rack and Roller Pinion Applications
KAM Series
- CNC machines
- Robotics
- Material handling equipment
- Gantry Systems
- Semiconductor
CRP Series
- Airplane Riveting and Bolting Systems
- Automatic Loading/Unloading System (Clean Room Condition)
- Vacuum Assembly System (Clean Room Condition)
- Precision Injection Molding
CGE Series
- Magnetic Resonance Imaging
- OLED Deposition Equipment (Vacuum Condition)
KAM Series | Rack and Roller Pinion
The new KAM series includes a Rack and Roller Pinion that allows high positional accuracy and zero-backlash in a variety of motion control applications requiring high-precision. It consists of a high-performance rack with a unique trochoidal tooth profile, a shrink fitting pinion, and two rolling pins for linear positioning and feeding accuracy. The KAM series is an advanced solution for different applications, such as cutting, gantry, material handling, robot actuators, machine tools, and semiconductors. Rack and Roller Pinion excels over traditional rack and pinion in speed, noise, and maintenance; Few of many advantages of having zero-backlash and vibration restraint.
Rack and Roller Pinions are used in cutting system, gantry system, robotics, machine tool, semiconductor, and material handling equipment.
Rack and Roller Pinion Features | KAM Series
- High positional accuracy of ±30㎛
- Various input capacities and unlimited assembly length
- Quite Full Rolling Contact, Minimize slippage
- High acceleration
- Low input inertia, maximized inner lubrication; up to 3m/s
- Custom rack sizes & Modular Components
- Customer cost reduction: High rigidity, high impact resistance
- No Magnetic Field
CRP Series | Zero Backlash, High Speed, Lubrication Free
The CRP Series is distinctive from the conventional rack and pinion systems because of our proprietary tooth profile. The uniquely modified cycloidal shape creates a rolling motion, which maximizes the tooth contact ratio and lowers the tooth surface pressure and contact stress. Slippage and backlash are minimized, providing high efficiency and productivity. Noise is also controlled even at high speeds (standard 6 m/s, maximum 10 m/s). Minimum or no lubrication is required, ensuring clean installation and operation. The pinion is completely sealed (IP54-IP67) with an internal, self-lubricating structure that has support bearings at both ends. There is no limit to stroke lengths and designs; we can provide customized solutions for both linear and rotary motion challenges with these key features. Our Clean Rack and Pinion Series enables quiet and smooth operation of gears with minimum wear.
Precise Rack and Pinion Series Specifications 
Key Benefits | Precise Rack and Pinion
LE Series | Gearbox-Integrated Pinion
The LE Series is an innovative, all-in-one solution that integrates the gearhead within the pinion, resulting in a compact, zero-backlash and low-noise unit. Its unique rear mounting structure eliminates the need for additional output shafts, shrinkable connectors, reduction gears or mounting structures, as is the case with front mounting. All models are designed to IP65 standards and come with lifetime lubrication. Incorporating our patented tooth profile, the LE series is capable of high accuracy, increased load capacity and faster acceleration.
Please contact us to learn how our Rack and Roller Pinion Systems can replace your linear motor, ball screw, or traditional rack and pinion systems.
LPR’s rotary transmission systems use a unique planocentric structure and mechanism to provide high performance with advanced features. The patented cycloidal tooth profile maximizes the tooth contact ratio and increases shock load capabilities while keeping backlash at less than 1 arc-min. Using a two-stage reduction design, they overcome the vibration and inertia found in traditional gearboxes. The gearbox is a completely sealed unit equipped with multiple bearing supports and lifetime lubrication.
High Precision Gearbox Ordering Code
High Precision Gearbox Applications
QF | CF | QS series
- Robot Transport Unit
- Laser Cutting System
- Laser Welding System
PQ Series
- Welding Positioners and Tilting Tables
- Automobile Brake Testing System
- LCD Manufacturing Equipment
- Howitzer
PH Series
- Tracking Antenna
- LCD Manufacturing Equipment
- Howitzer
RQ Series
- Automatic Tool Changer (ATC)
Servo Gearbox
Planetary Gearbox
- Airplane Riveting and Bolting Systems
Custom Gearbox
SQ15K
- Wafer Manipulator
Key Benefits
QF Series | Specifications
Customizable Input Shaft
Reduction Ratio Range: 30 – 500
Rated Output Torque: 36 – 290 Nm
Lost Motion: < 1 arc-min
CF Series | Specifications
Reduction Ratio Range: 10 – 100
Rated Output Torque: 7 – 284 Nm
Lost Motion: 3 ~ 5 arc-min
QS Series | Specifications
Silent, Ideal for Heavy Duty
Reduction Ratio Range: 50 – 380
Rated Output Torque: 450 – 1800 Nm
Lost Motion: < 1 arc-min
PQ Series Solid Shaft Gearbox | Specifications
Product Type: High Precision Gearhead – Solid Shaft
Reduction Ratio Range: 7 – 700
Rated Output Torque: 8 – 12000 Nm
Lost Motion: < 1 arc-min
PH Series Hollow Shaft Gearbox | Specifications
Product Type: High Precision Gearhead – Hollow Shaft
Reduction Ratio Range: 40 – 800
Rated Output Torque: 30 – 7200 Nm
Lost Motion: < 1 arc-min
Planetary Gearbox | Classic Reduction Gear
XP Series | Signature Planetary Gearbox
XP-C2 Series
Reduction Ratio Range: 4 – 91
Rated Output Torque: 6.5Nm – 180Nm
Lost Motion: 2 – 20 arc-min
Characteristic: Economical
XP-S2 Series
Reduction Ratio Range: 4 – 91
Rated Output Torque: 6.5Nm – 180Nm
Lost Motion: 2 – 20 arc-min
Characteristic: Economical
XF-C2 Series
Reduction Ratio Range: 3 – 90
Rated Output Torque: 6.5Nm – 180Nm
Lost Motion: 2 – 20 arc-min
Characteristic: Economical
CP Series | Standard Planetary Gearbox
CP-C2 Series
Reduction Ratio Range: 3 – 100
Rated Output Torque: 3.5Nm – 180Nm
Lost Motion: 2 – 20 arc-min
Characteristic: Standard planetary gear
CP-S2 Series
Reduction Ratio Range: 3 – 100
Rated Output Torque: 3.5Nm – 180Nm
Lost Motion: 2 – 20 arc-min
Characteristic: Standard planetary gear
MM Series | Compact Planetary Gearbox
MM-C2 Series
Reduction Ratio Range: 3 – 100
Rated Output Torque: 3.5Nm – 180Nm
Lost Motion: 2 – 20 arc-min
Characteristic: Small planetary gear
MM-S2 Series
Reduction Ratio Range: 3 – 100
Rated Output Torque: 3.5Nm – 180Nm
Lost Motion: 2 – 20 arc-min
Characteristic: Small planetary gear
ED+ Series | Economical Planetary Gearbox
Reduction Ratio Range: 3 – 100
Rated Output Torque: 3.5Nm – 180Nm
Lost Motion: 8 – 20 arc-min
Characteristic: Economical
SS Series | Hollow Shaft Planetary Gearbox
Reduction Ratio Range: 10 – 250
Rated Output Torque: 2Nm – 600Nm
Lost Motion: 2 – 10 arc-min
Characteristic: Hollow shaft gear
Customized Gearbox Solutions
In addition to our wide range of standard products, we can create customized reduction gears to suit a variety of applications. Our team of highly skilled engineers can develop innovative designs with high precision, high output torque and compact size. Contact us to learn more about how we can meet your requirements.
We can provide comparisons between our high precision gearbox and other well-known brands upon request. Please contact us for further technical information.
Rack and Pinion Gantry Robot | High Payload
LPR offers medium and heavy duty rack and pinion gantry robots for automotive engine transferring, tire automation, welding automation.
Compared to linear gantry robots, rack and pinion robots allow a higher payload up to 3,600 kg, and precision.
We can provide standard 1-axis, 2-axis, 3-axis gantries with payload up to 400 kg. Heavy duty gantries for challenging applications are also available. Nominal speed of gantries starts from 2.6 m/s.
Iron | Aluminum | Steel Gantry Loader Solutions
Rack and pinion gantry loaders are commonly used to carry materials to castings machines. With a required payload usually over 100 kg, standard gantry systems do not allow such operations, hence a rack and pinion system has to be applied. A fully automated gantry system for more than 20 casting sets can be installed at your plant.
For more information about the rack and pinion gantry robots, please visit Gantry Robots page.