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LM20UU Linear Motion Bearings 20mm Ball Bushing 20x32x42mm
Linear Motion Bearings consists of an outer cylinder, ball retainer, balls and two end rings. It has high precision and rigidity, ease of assembly, and ease of replacement.
Features of linear motion bearing :
1) Size: 4 ~
2) Series: Standard Type: LM, LME, LMB,KH; Adjustable Type: LM/LME…UU-AJ; Open Type: LM/LME…UU-OP; Double-Wide Type: LM/LME…L UU; Standard Flanged Type: LMF/LMK/LMH…UU,LMEF/LMEK…UU; Pilot Flanged Type: LMFP/LMKP/LMHP; Double-Wide Flanged Type: LMF/LMK/LMH…LUU,LMEF/LMEK/LMEH…LUU; Double-Wide-Middle Flanged Type: LMFC/LMKC
3) "UU" means rubber seals on the both sides of the bearing
4) The above series including the standard type, clearance adjustment type and open type
Applications of linear motion bearing :
Linear motion ball bearings are used widely in the defense, precision machinery,medical instrument, chemical, printing, agriculture, robotic, automatic production line etc. fields.
Linear Bearings Model
| Standard type | Clearance- adjustable type | Open type | d | D | L | Mass g |
| LM 3 | - | - | 3 | 7 | 10 | 1.4 |
| LM 4 | - | - | 4 | 8 | 12 | 1.9 |
| LM 5 | - | - | 5 | 10 | 15 | 4 |
| LM 6 | LM 6 | - | 6 | 12 | 19 | 8 |
| LM 8S | LM 8S-AJ | - | 8 | 15 | 17 | 11 |
| LM 8 | LM 8-AJ | - | 8 | 15 | 24 | 16 |
| LM 10 | LM 10-AJ | - | 10 | 19 | 29 | 30 |
| LM 12 | LM 12-AJ | - | 12 | 21 | 30 | 31.5 |
| LM 13 | LM 13-AJ | LM 13-OP | 13 | 23 | 32 | 43 |
| LM 16 | LM 16-AJ | LM 16-OP | 16 | 28 | 37 | 69 |
| LM 20 | LM 20-AJ | LM 20-OP | 20 | 32 | 42 | 87 |
| LM 25 | LM 25-AJ | LM 25-OP | 25 | 40 | 59 | 220 |
| LM 30 | LM30-AJ | LM 30-OP | 30 | 45 | 64 | 250 |
| LM 35 | LM 35-AJ | LM 35-OP | 35 | 52 | 70 | 390 |
| LM40 | LM 40-AJ | LM 40-OP | 40 | 60 | 80 | 585 |
| LM 50 | LM 50-AJ | LM 50-OP | 50 | 80 | 100 | 1580 |
| LM 60 | LM60-AJ | LM60-OP | 60 | 90 | 110 | 2000 |
linear motion bearings are the most common type of bearings . The prefix "LM" denotes that the bearing is intended for linear motion,distinguishing it from rotation ball bearings. The number refers to the diameter of the shaft that the bearing will fit on. The suffix letter appears to refer to the design of the bearing. L, V and U appear to refer to types of bearing seals (V indicates a non-contact seal, and U indicates a contact seal), whereas Z indicates that the bearing has been shielded instead of sealed. Single letters indicate that the bearing is single sealed/shielded, whereas double letters (for example, "UU") indicate that the bearing has been double sealed/shielded.There are also many other types of bearings such as LMk8UU, LMKL8UU.