Overview

According to its Servo-gearbox true versatile design, SRP can be easily used as a Tailor-made Racks & Pinions Drive.

Natural features from this product range offer as a standard the ever useful Rack versus Pinion arrangement:

• Large pinions allow high linear speed when requested by very high dynamic applications (such as laser cutting machines, pick & place robots, etc.)
• Smaller pinion offer a higher compound stiffness when the drive system gets heavier mass to move (machine-tools)

Features

In addition, the modular arrangement between the servo-gearbox and the additional pinion allows the designers to keep the optimized teeth module according to their specific applications.

Overview

DRP+ planetary gearboxes are the dedicated solution to ZERO-BACKLASH rack & pinion and rotary table drive applications.

They consist of two top quality planetary reducers mounted in parallel inside of a super rigid universal housing. Two integral output pinions engage the rack to allow preloading of the system and maximize the Stiffness on Rack. When choosing the mechanical preload solution, the DRP+ becomes a DualDRIVE unit, which achieves ZERO-BACKLASH by torsionally winding one pinion against the other through the rack. Only one motor is required to drive the axis simplifying motor control.

DRP+ becomes a TwinDRIVE when the Electrical preload solution is applied to cancel the backlash between the two pinions. In this case backlash is eliminated by using two motors; one to drive the axis and one to preload the axis.

Features

• 6 Sizes
• Reduction ratios: 5 to 91
• Acceleration up to: 1000 in/s^2 (25 m/s^2)
• Nominal tangential load up to: 30,000 Lbs. (135,000 N)
• Max axis weight up to 200,000 Lbs. (90,000 kg)
• Max linear speed up to: 3000 in/min. (78 m/min)
• ZERO-BACKLASH by design

Overview

KRP+ planetary reducers are the SingleDRIVE components in a family of reducers dedicated to Rack & Pinion and Rotary Table drive applications. They can be used alone as a single drive or combined with a second unit to create a ZERO-BACKLASH Rack & Pinion Axis.

As A SingleDRIVE, the KRP+ features an integral output pinion and planetary gear train that have been optimized for minimum backlash (1 – 3 arc minutes) and maximum STIFFNESS ON RACK. In-Line and right angle versions are available.

DualDRIVE kit combines two KRP+ reducers in a patented, mechanically preloaded ZERO-BACKLASH system. The two units are torsionally preloaded against the rack in this closed loop mechanical system. Only one motor is required to drive the axis.

Two KRP+ reducers can also be combined together in an electrically preloaded TwinDRIVE kit. Backlash is eliminated using two motors, one to drive the axis and one to preload the axis.

Features

• 6 Sizes
• Reduction ratios : 5 to 91
• Acceleration up to : 1000 in/s^2 (25 m/s2)
• Nominal tangential load up to: 30,000 Lbs.(135,000N)
• Max axis weight up to: 200,000 Lbs. (90,000 Kg.)
• Max linear speed up to: 3000 in/min (78 M/min)

Andantex is pleased to introduce a smaller size, KRP 0, rack and pinion dedicated reducer. This compact, cost effective solution includes integral module 3 helical output pinions. There are two standard output pinions 14 teeth or 18 teeth along with three standard ratios 5, 7 and 10 providing machine designers a library of standard solutions. Units are available In-Line or Right- Angle. Furthermore ZERO-BACKLASH DualDRIVE (one motor) or TwinDRIVE (two motors) arrangements are available.

The inherent stiffness and robust life of the KRP range make these units an excellent choice for routers and cutting (laser, waterjet, etc.) machines. The ZERO-BACKLASH options allow the elimination of linear scales while still providing required accuracy and precision. Finally, the inclusion of the pinion makes these products extremely cost effective for linear or rotary axis drives.

Overview

Turnkey high class planetary Servo-Gearhead, dedicated to Rack & Pinion applications.

The new benchmark for electrical preload on demanding machine tool applications! KRPX is the new version of REDEX ANDANTEX rack & pinion high-tech planetary reducers, offering cost effective, easy to implement and high performing solutions for moving column or gantry machine types as well as many other applications.

The KRPX housing is made of high quality spheroidal graphite cast iron. Its structure has been optimised with finite element analysis methods to avoid deflection during acceleration. Fixation is made by oversized screws to ensure a real stiff connection with the machine frame allowing the KRPX housings to be considered as an integral part of the machine main frame.

The output pinions are machined to the same diameter as the shafts, allowing the best possible balance between transmittable torque and rigidity at the rack. In addition, output shaft consists of two preloaded and substantially oversized tapered roller bearings support.

Features

This exclusive design offers exceptional compound stiffness which allows to dramatically decrease the radial bending (up to 60% of the overall distortion) and to increase the natural frequency of the Rack & Pinion drive system.

By combining two high-tech planetary reducers, KRPX allows perfect mounting on both sides of the machine frame and enables true zero backlash when coupled with an electrical preload system.

Available in 5 standard sizes KRPX is very compact, and easy to install. Ratios from 5:1 to 91:1 with feed force from 9000 N to 155,000 N.

The Rack Jack range of products from WMH-Herion provides simple, cost effective lifting or precise positioning of loads from 180 – 1800 Lbs. Rack Jacks come in 3 sizes and are available with one or two pushers (racks). Based on the simple mechanical principle of rack and pinion combined with a robust square housing, Rack Jack ensures reliable operation for a long lifetime. Four standard input options as well as customized designs are available.

• 3 sizes able to lift loads from 180 to 1800 Lbs.
• One or two racks. In the double version racks move in opposite directions
• Universal housing with many mounting options
• Compact with high bending stiffness due to large diameter and wide teeth on the rack
• Robust design for long service life with continuous use
• Precise positioning and high repeatability
• 4 standard input options
• Rack lengths up to 110” (2800 mm)
• Customized systems available including specific housing designs, input connection options, bellows protection, etc.