MINIATURE MOTION GUIDANCE
- STANDARD TM SERIES

This standard width series of miniature linear motion guides is available with rails widths from 7mm to 20mm. These miniature guides offer low noise, compact design, high precision and corrosion resistance (stainless steel) making them ideal for medical equipment, semiconductor assembly, test devices etc.

There are two types of rail giving the option to bolt it from above (TMO) or below (TMU). The carriages can be specified with standard precision (N1) or high precision (H2) and standard preload (N1) or light preload (H2). Please see the table below for further details.

There is also a wider series (TMW) of rails which have higher load and moment capacities.

miniature TM guides

Carriage Dimensions

drawing of TM linear carriage

Part Number H W L B C M x l L1 N E Grease ø H3
TM-7N 8 17 24.3 12 8 M2 x 2.5 14.1 1.5 - - 1.5
TM-7L 8 17 31.8 12 13  M2 x 2.5 21.6 1.5 - - 1.5
TM-9N 10 20 31.3 15 10 M3 x 3 20.7 2.2 - - 2
TM-9L 10 20 41.4 15 16 M3 x 3 30.8 2.2 - - 2
TM-12N 13 27 34.9 20 15 M3 x 3.5 21.3 2.7 - - 3
TM-12L 13 27 45.4 20 20 M3 x 3.5 31.8 2.7 - - 3
TM-15N 16 32 44.4 25 20 M3 x 4 27.7 3.1 4 A-M3 4
TM-15L 16 32 44.4 25 20 M3 x 4 27.7 3.1 4 A-M3 4
TM-20C 20 40 39.8 30 - M4 x 6 22.2 4.2 4 A-M3 5
TM-20N 20 40 51.8 30 25 M4 x 6 34.2 4.2 4 A-M3 5
TM-20L 20 40 69.8 30 30 M4 x 6 52.2 4.2 4 A-M3 5

All dimensions are in mm and loads are in N.

combined roller bearing

Rail Dimensions & Loads

The rail is available with either top fixing through holes (TMO) or bottom fixing threaded holes (TMU).
The maximum length for sizes 7 and 9 is 1000mm. For size 12 upwards the maximum length is 2000mm.

When two carriages are used in close contact, the moment capacity in directions Mp and My is increased - see table below.

drawing of TM linear rail

Part Number W1 W2 H1 G P d1 x d2 x h TMU holes C50 C0 Mp / My
(1 block)
Mp / My
(2 blocks)
Mr Carriage
Weight (g)
Rail
Weight (g/m)
TM-7N 7 5 5 5 15 2.4x4.2x2.3 M3 1197 1703 4.2 23.1 6.22 9 253
TM-7L 7 5 5 5 15 2.4x4.2x2.3 M3 1631 2650 10.1 50.0 9.67 12.6 253
TM-9N 9 5.5 6 6 20 3.5x6x3.5 M4 1721 2545 9.3 46.6 11.84 17.1 391
TM-9L 9 5.5 6 6 20 3.5x6x3.5 M4 2375 4030 21.9 102.8 18.74 25.2 391
TM-12N 12 7.5 8 6 25 3.5x6.5x4.5 M4 3023 3816 14.4 75.8 23.66 31.5 679
TM-12L 12 7.5 8 6 25 3.5x6.5x4.5 M4 4246 6200 34.8 169.1 38.44 45.9 679
TM-15N 15 8.5 10 6 40 3.5x6.5x4.5 M4 4540 5842 28.6 148.7 44.99 57.6 1071
TM-15L 15 8.5 10 6 40 3.5x6.5x4.5 M4 6492 9737 73.5 351.2 74.98 85.5 1071
TM-20C 20 10 11 8 60 6x9.5x5.5 M6 4512 5299 20.7 115.9 54.05 80.1 1572
TM-20N 20 10 11 8 60 6x9.5x5.5 M6 6191 8328 50.2 252.7 84.94 119.7 1572
TM-20L 20 10 11 8 60 6x9.5x5.5 M6 8396 12870 118.6 554.4 131.27 176.4 1572

Tolerance & Preload

Size Tolerance Standard N1 (mm) High H2 (mm) *
All sizes Dimension tolerance of height H ±0.040 ±0.020
All sizes Difference in height H 0.030 0.015
All sizes Dimension tolerance of width W2 ±0.040 ±0.025
All sizes Difference in width W2 0.030 0.020

* Size 20 is not available with H2 precision

Size Standard Preload N1 (µm) Light Preload H2 (µm)
TM7 / TMW7 -2 to +2 -3 to 0
TM9 / TMW9 -2 to +2 -4 to 0
TM12 / TMW12 -3 to +3 -6 to 0
TM15 / TMW15 -2 to +2 -10 to 0
TM20 -7 to +7  

Related Products and Links

Linear Bearing Shafts
Vee Bearings and Rails
linear motion guidance systems (aluminium and standard)
aluminium linear motion guidance
linear track guidance system
corrosion resistant linear slides
Standard combined bearings
Flow chart to select linear motion systems