linear bearings

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 A mounted linear bearing from Grainger, such as a linear pillow block bearing or flange bearing, can offset torsional misalignment and provide extra support. Choose linear motion bearings from single-flange and double-flange options. These bearings feature numerous holes that can allow you to add many accessories and brakes.

Bearings housed in carriages and tables can ride on round shafts or square profile rails. Here’s a look at the advantages of each when an application demands guided linear motion.”
Engineers faced with a linear-motion application often turn to pre-engineered linear bearings and guides. But linear guides come in two basic shapes – round and square – and designers often struggle with which type to use. Square or profile rails once cost significantly more than round because the former need extensive grinding that is inherent to the design. But recent manufacturing advances and economies of scale let square rails now compete with round in a broad range of applications.

The criteria for choosing one over the other are no different than choosing any other machine component: define system objectives, then consider factors such as load capacity, stiffness, accuracy, smoothness, size, and overall costs. The best place to start is to look at the fundamental qualities of each type of guide.

SKF LUCF 20-2LS linear bearings

33.3 mm M6x1
36.5 mm 11mm

SKF LTCF 12-2LS linear bearings

5,300 rpm 4.67 mm
1.1 mm 75.6 mm

SKF LUCS 60 linear bearings

19.05 mm 16mm
18 mm 200 °C

KOYO SDMK6MG linear bearings

100 °C 228 mm
290 mm M10x1

13 mm x 23 mm x 23 mm KOYO SESDM13 AJ linear bearings

120 °C 101 mm
40 mm 1.65 kN

KOYO SDE60OP linear bearings

76.1 mm 40 mm
LK210G2H 40 mm

Toyana KH5070PP linear bearings

25.7 kN 90 mm
8 Nm M6x1

INA KTSS16-PP-AS linear bearings

UC215-48G2 76.2 mm
38.9 mm -20 °C

INA KS12 linear bearings

9.55 kN 13 mm
19 mm 127 mm

INA KGSNG25-PP-AS linear bearings

160 mm 149 mm
3.08 Hz C3

INA KTNOS 20 C-PP-AS linear bearings

M6x1 -20 °C
49.2 mm M12

INA KBO40 linear bearings

100 °C 3.48 kg
35 mm 22 Nm