SIGMA Bearing

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SIGMA Bearing is a machine element that constrains relative motion to only the desired motion, and reduces friction between moving parts. The design of the bearing may, for example, provide for free linear movement of the moving part or for free rotation around a fixed axis; or, it may prevent a motion by controlling the vectors of normal forces that bear on the moving parts. Most bearings facilitate the desired motion by minimizing friction. Bearings are classified broadly according to the type of operation, the motions allowed, or to the directions of the loads (forces) applied to the parts.


Rotary bearings hold rotating components such as shafts or axles within mechanical systems, and transfer axial and radial loads from the source of the load to the structure supporting it. The simplest form of bearing, the plain bearing, consists of a shaft rotating in a hole. Lubrication is used to reduce friction. In the ball bearing and roller bearing, to reduce sliding friction, rolling elements such as rollers or balls with a circular cross-section are located between the races or journals of the bearing assembly. A wide variety of bearing designs exists to allow the demands of the application to be correctly met for maximum efficiency, reliability, durability and performance.

SIGMA RT-736 thrust roller bearings

127819 2674 lb
Triple Lip 205

30 mm x 72 mm x 27 mm SIGMA NUP 2306 cylindrical roller bearings

60 mm 90 mm
Dry 0.15;Period RoHS

63 mm x 95 mm x 63 mm SIGMA GEG 63 ES plain bearings

6.5625 in 1.8750 in
Lubrication Fitting 1.2500 in

80 mm x 200 mm x 48 mm SIGMA 6416 deep groove ball bearings

Round 52100 Bearing Steel
Grease KFB

180 mm x 225 mm x 22 mm SIGMA 61836M deep groove ball bearings

1 in Oil-Impregnated Bron
1 in SAE 841, CT-1000-K26

17 mm x 47 mm x 18 mm SIGMA 88603 deep groove ball bearings

1.1719 in 3.2500 in
1.5000 in 2-11

120,65 mm x 254 mm x 50,8 mm SIGMA NMJ 4.3/4 self aligning ball bearings

4-3/4 in 2.0000 in
6.19 in Uncoated

44,45 mm x 71,45 mm x 66,675 mm SIGMA GEZM 112 ES plain bearings

160mm Standard
240mm nn3032w33m2kp4-nachi

17 mm x 35 mm x 14 mm SIGMA 63003-2RS deep groove ball bearings

Open 19 mm
13700 RPM 19 mm

SIGMA MR-14-N needle roller bearings

C0 Straight
Brass Uncoated

30 mm x 62 mm x 23,8 mm SIGMA 3206 angular contact ball bearings

Non-Expansion Bearin 7.2500 in

90 mm x 190 mm x 64 mm SIGMA NUP 2318 cylindrical roller bearings

Plastic 1206tn-qbl
30mm 0.02 KGS