ATLANTA
D
RIVE
S
YSTEMS


Precision Hardened & Ground Racks


ATLANTA is pleased to expand their wide range of racks to include high-precision DIN 4 and 5 racks, which are precision manufactured in a controlled environment.

Three levels of precision are now available, with pitch accuracies down to 0.012 mm per 1,000 mm length.  This gives the machine designer the flexibility of choosing the desired level of rack precision to meet the application needs.

These racks are available in straight (spur) and helical versions, in modules 2.0 through 12.0, in half meter and one meter lengths.  These racks are ideal for high accuracy applications requiring minimal pitch error over the complete travel length.  The high precision pitch of the racks can eliminate the need for electronic compensation and the high precision parallelism allows for drives with extremely low backlash without the need for preloading.  Used with our split-pinions, ultra-precise zero-backlash axis drives can be achieved.

Rack Range:

Tooth
Quality
Tooth
Hardness
Tooth
Pitches
Pitch Deviation GTf
per 1,000 mm length
Lengths Available
DIN 4 50 - 55 Rc Module 5.0 to 12.0 < 0.012 mm 1.0 Meter
DIN 5 60 Rc Module 2.0 to 4.0 < 0.048 mm 0.5 & 1.0 Meter
DIN 6 60 Rc Module 2.0 to 12.0 < 0.073 mm 0.5 to 2.0 Meters

The quality levels denote the accuracy of the teeth, which affects the positioning accuracy, backlash and noise level of the rack & pinion set.

Helical Racks:
 

Rack Size Rack Part Number
(click on part number for data sheet)
DIN 4 Quality DIN 5 Quality DIN 6 Quality
Module 2.0 --- 29.20.104 29.20.100
Module 3.0 --- 29.30.101 29.30.100
Module 4.0 --- 29.40.101 29.40.100
Module 5.0 48.50.105 --- 29.50.105
Module 6.0 48.60.105 --- 29.60.105
Module 8.0 48.80.105 --- 29.80.105
Module 10.0 48.10.105 --- 29.10.105
Module 12.0 48.12.105 --- 29.12.105


Straight Racks:
 

Rack Size Rack Part Numbers
(click on part number for data sheet)
DIN 4 DIN 5 DIN 6
Module 2.0 --- --- 28.20.100
Module 3.0 --- --- 28.30.100
Module 4.0 --- --- 28.40.100
Module 5.0 46.50.105 --- 28.50.105
Module 6.0 46.60.105 --- 28.60.105
Module 8.0 46.80.105 --- 28.80.105
Module 10.0 46.10.105 --- 28.10.105
Module 12.0 46.12.105 --- 28.12.105


 
Rack Assembly Kit

To set the pitch in-between rack segments, a companion rack is typically used.  While this works well for most applications, it can induce error into the axis.  This error can accumulate with each rack joint, especially on long axis drives.

When using our Precision Hardened & Ground Racks in high accuracy applications, we recommend using our Rack Assembly Kits to achieve the most accurate pitch in-between rack segments.  The assembly kit consists of a measuring bridge, an adjusting device and magnetic rollers.  With this kit, it is possible to achieve perfect rack joints without adding error to the system.  A video showing how the Rack Assembly Kit is used can be found on our Instructional Videos page.

 

Other Products Available:

Servo Reducers are available in five levels of precision to meet any application needs.  Perfect for use in applications that demand high performance, precise positioning and repeatability.  Angular backlash levels down to less than 1 arc-minutes are available as standard.  Optional integral pinion shafts are also available to mount directly to hollow output shaft.

Zero-Backlash Rack & Pinion Drives, for applications requiring ultra-precise positioning and repeatability, the system backlash can be eliminated by using a split-pinion or dual pinions.

 

ISO Flanged Pinions, are provided with ISO 9409-1 flanges to mount directly to our High-Torque (HT) Servo-Worm Reducers and popular planetary gearboxes, such as Alpha TP, Stober PH, Apex AD and Neugart PLF.  This interface provides a tight integration of the pinion to the gearbox output, reducing overhung loading and backlash between the components.  The pinions are easily mounted and replaceable if future repair is needed.

Helical Splined Pinions, are provided with DIN 5480 internal splines to mount directly to popular planetary gearboxes, such as Alpha and Stober.  This interface provides a tight integration of the pinion to the gearbox output, reducing overhung loading and backlash between the components.

Integrated Racks mount directly to most standard linear guides (HIWIN, IKO, INA, NSK, SKF, Star, THK, etc.), eliminating the need for additional machining and alignment, saving time and money.
 

Copyright 2004 - 2010 Atlanta Drive Systems, Inc.

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