Racks

Welcome to the world's widest range of quality racks.
As a specialist in the field of high-quality racks we offer more than 600 types of racks. This is most comprehensive rack program that is currently available on the market. ATLANTA racks are available in the quality 3 to quality 10, in helical or straight toothed, milled or hardened or hardened and ground and in sizes from module 1.5 to module 12. With this combination diversity it' possible to realize almost any conceivable applications optimally.

UHPR

Ultra High Precision Rack

Quality 3
Quality 5

Overview UHPR Racks

HPR

High Precision Rack

Quality 6
Quality 7

Overview HPR Racks

PR

Precision Rack

Quality 8

Overview PR Racks

BR

Basic Rack

Quality 9
Quality 10

Overview BR Racks

Rack Styles Available

Helical toothed racks	Straight toothed racks	Integrated racks	Round racks

These racks have the teeth at an angle (19º 31' 42") to rack length for increased load capacity and quiet operation.	These racks have the teeth perpendicular to rack length, and are traditionally known as "spur".	These racks were designed for mounting directly to most common linear guides.	These racks have a round cross-section and use bushings for support.

Rack Quality Levels Overview

Class	Rack Type	Quality	Total pitch error (±µm/m)	Applications	helical toothed	straight toothed
Ultra-High Precision Rack (UHPR)	hardened & ground	3	12	High precision machine tools with electrical preload	Series 48	Series 46
Ultra-High Precision Rack (UHPR)	case hardened & ground	5	26	Machine tools Lifting axes Multiple pinion contact	Series 29	Series 28
High Precision (HPR)	hardened & ground	6	36	Wood working machines Plastic working machines Aluminium working machines Machine tools, water cutting machines Plasma cutting machines	Series 29 Series 29	Series 28 Series 28
High Precision (HPR)	hardened & ground	7	52	Wood working machines Linear axes with high requirement for smooth running	Series 29	Series 28
Precision Rack (PR)	hardened & ground	8	60	Portals Handling Linear axes	Series 39	Series 34
Precision Rack (PR)	milled & quenched + tempered	8	100	Portals Handling Linear axes	Series 38	Series 33
Basic Rack (BR)	milled	9	150	Linear axes with low load Feed units for adjustment Lifting axes, handling, welding robots	Series 47	Series 25
Basic Rack (BR)	hardened	10	200		Series 39	Series 34

Rack Range Overview

Series	Teeth system	Material	Available modules	Treatment	Quality
25	straight	heat-treatable steel	1; 1,5; 2; 2,5; 3 4; 5; 6; 8; 10	milled	9
26	straight	POM	1; 1,5; 2; 2,5; 3	milled	Plastic
28	straight	case hardening steel	3; 4; 5; 6	case hardened & ground	5
28	straight	case hardening steel	2; 3; 4	hardened & ground	6
28	straight	heat-treatable steel	2; 3; 4; 5; 6; 8; 10; 12	hardened & ground	6
28	straight	heat-treatable steel	2; 3; 4; 5; 6; 8	hardened & ground	7
29	helical	case hardening steel	3; 4; 5; 6	case hardened & ground	5
29	helical	case hardening steel	2; 3; 4	hardened & ground	6
29	helical	heat-treatable steel	1,5; 2; 3; 4; 5 6; 8; 10; 12	hardened & ground	6
29	helical	heat-treatable steel	2; 3; 4; 5; 6; 8; 10	hardened & ground	7
33	straight	heat-treatable steel	2; 3; 4	milled & quenched and tempered	8
34	straight	heat-treatable steel	2; 3; 4; 5	hardened & ground	8
35	straight	round bright steel	1; 1,5; 2; 2,5 3; 4; 5	milled	9
35	straight	round heat-treatable steel	1; 1,5; 2; 3; 4	milled	7
36	straight	stainless X8CrNiS 18-9	1; 1,5; 2; 3	milled	8
36	straight	round stainless X8 CrNi 18-9	1; 1,5; 2; 3	milled	8
37	straight	heat-treatable steel	pitch 5 & 10 mm	milled	9
38	helical	heat-treatable steel	2; 3; 4	milled & quenched and tempered	8
39	helical	heat-treatable steel	1,5; 2; 3; 4; 5 6; 8; 10; 12	hardened	10
39	helical	heat-treatable steel	2; 3; 4; 5	hardened & ground	8
46	straight	heat-treatable steel	5; 6; 8; 10; 12	hardened & ground	3
47	helical	heat-treatable steel	1,5; 2; 3; 4 5; 6; 8; 10	milled	9
48	helical	heat-treatable steel	5; 6; 8; 10; 12	hardened & ground	3
49	straight & helical	Integrated racks heat-treatable steel	module 2; 3; 4 pitch 5; 10 & 13.33 mm	hardened & ground milled	6 9

Advantage of long, ground racks of ATLANTA
For mounted racks, the obtained accuracy and required installation time are important. With ATLANTA ground racks with lengths of 1 500 mm and 2 000 mm, the total pitch error per meter is reduced dramatically. Thus, the pitch error of the entire axis is correspondingly lower. By using long racks, the number of rack joints is reduced, which improves the accuracy of the entire axis and significantly reduces the installation time at the same time.
Ground racks have the advantage that the complete rack is more precise, the meshing takes place evenly and the pinion bearing stress is reduced unlike a milled tooth. The ground rack drives have lower friction which increase energy efficiency.
Assembly Example:
The following example shows the advantage of long, ground racks of ATLANTA.
Assembly of module 4 racks.
- Assembly length: 6 meters mounted with companion rack for assembly i.e. Q_joint = 25µm
- Time: Number of screws x t_screw + number of joints x t_joint + number of pins x t_pin
It will be used 3 pices of 29 40 205 quality 6, helical toothed, module 4, length 2 000mm :
- Accuracy GTf/2 000 = 47µm
- Maximum pitch error: 3 x 47µm (racks) + 2 x 25µm (joints) = 191µm
- Time: Number of screws = 3 x 16 = 48 screws, number of joints = 2, number of pins = 0
It will be used 6 pices 29 40 105 quality 6, helical toothed, module 4, length 1 000mm :
- Accuracy GTf/1 000 = 36µm
- Maximum pitch error: 6 x 36µm (racks) + 5 x 25µm (joints) = 341µm
- Time: Number of screws = 6 x 8 = 48 screws, number of joints = 5, number of pins = 0
It will be used 12 Stück 29 40 055 quality 6, helical toothed, module 4, length 500mm :
- Accuracy GTf/500 = 32µm
- Maximum pitch error: 12 x 32µm (racks) + 1 x 25µm (joints) = 659µm
- Time: = 12 x 4 = 48 screws, number of joints = 11, number of pins = 12 x 2
Advantages of using long, ground racks of ATLANTA:
Operation and Maintenance Instruction for ATLANTA Racks & Pinions
MPZ 001 - Racks & Pinions
German English
Access CAD Drawings ATLANTA Rack Range

Integrated Racks

ATLANTA Integrated Racks are suitable for a wide range of applications where precise positioning and repeatability is required. Due to the direct mounting on the rail, the adjusting between rack and rail eliminates. Thus, space-saving and performance-optimized structures can be realized.