Rack & Pinion Systems

Diametral Pitch (DP) Rack & Pinion Interchanges

Diametral Pitch (DP) Rack & Pinion Interchanges

Some companies in the U.S. use diametral pitch (or DP) rack & pinions on small, light machines.  These rack & pinions are typically lower quality and inexpensive, but work sufficiently and provide reasonable accuracy.

However, companies eventually outgrow the capabilities of these low quality rack & pinions, especially when they want to achieve better accuracy, smoothness and higher linear speeds.

ATLANTA offers a range of soft helical and spur rack & pinions, which are precision milled to provide smoother running and quieter operation while handling higher linear speeds.  Our wide range of standard rack & pinion drives allows for maximum design flexibility, so machine builders' requirements always get met.

ATLANTA Rack Interchanges

Below you can find the approximate rack interchanges from common Diametral Pitch racks to ATLANTA's metric racks. For rack dimensions, please click on the icon for a PDF catalog page.

Diametral
Pitch
Boston Gear Browning Martin Gear McMaster
Carr
ATLANTA Spur
Interchange*
ATLANTA Helical
Interchange*
20 L2020-4 4YSR20x1/2 R20x4
TR20x4
R2020x4
6295K112 25.15.100 47.16.100
L2020-6 6YSR20x1/2 R20x6
TR20x6
R2020x6
6295K113 25.15.200 47.16.100
16 L2016-4 4YSR16x3/4 R16x4
R2016x4
6295K123 25.20.100 47.16.100
L2016-6 6YSR16x3/4 R16x6
R2016x6
6295K124 25.20.200 47.16.100
12 L2012-4 4YSR12x1 R12x4
RA12x4
TR12x4
R2012x4
6295K132
6295K142
25.25.100 47.21.100
L2012-6 6YSR12x1 R12x6
RA12x6
TR12x6
R2012x4
6295K133
6295K143
25.25.200 47.21.200
10 L2010-4 4YSR8x1-1/4 R10x4
RA10x4
TR10x4
R2010x4
6295K152
6295K163
25.30.101 47.31.100
L2010-6 6YSR8x1-1/4 R10x6
RA10x6
TR10x6
R2010x6
6295K153
6295K164
25.30.201 47.31.200
8 L208-4 4YSR8x1-1/2 R8x4
RA8x4
TR8x4
R208x4
6295K172
6295K182
25.40.100 47.41.100
L208-6 6YSR8x1-1/2 R8x6
RA8x6
TR8x6
R208x6
6295K173
6295K183
25.40.201 47.41.200
6 L206-4 4YSR6x1-1/2 R6x4
RA6x4
TR6x4
R206x4
6295k192
6295K212
25.50.100 47.51.100
L206-6 6YSR6x1-1/2 R6x6
RA6x6
TR6x6
R206x6
6295K193
6295K213
25.50.200 47.51.200
5 L205-4 4YSR5x1-1/2 R5x4
RA5x4
TR5x4
R205x4
--- 25.50.100 47.51.100
L205-6 6YSR5x1-1/2 R5x6
RA5x6
TR5x6
R205x6
--- 25.50.200 47.51.200
4 L204-4 4YSR4x2 R4x4
RA4x4
TR4x4
R204x4
--- 25.60.101 47.61.100
L204-6 6YSR4x2 R4x6
RA4x6
TR4x6
R204x6
--- 25.60.201 47.61.200

* Interchanges are approximate.  Dimensions of racks and tooth size are different.

For matching spur pinions, please follow this PDF link.  For matching helical pinions, please follow this PDF link.