Opposite Counterbore Linear Bearing
The Single Opposite Counterbore Flanged Linear Ball Bearing series is designed for streamlined assembly and space-efficient mounting in precision linear motion systems. Featuring a unique opposite counterbore hole design, this configuration allows fasteners to be installed from the reverse side, ensuring a completely flush and unobstructed front mounting surface. Available in round, rectangular, and oval flange shapes, it provides versatile integration options for compact machinery where a clean profile is essential. This single-row bearing delivers smooth, low-friction travel and reliable performance across a wide range of industrial automation applications.
| Nominal Part No | Major Dimensions (mm) | Eccentricity Ī¼m |
Squareness Ī¼m |
Basic Load Rating | Nominal Part No. |
||||||||||||
| Resin Retainer |
Stainless Steel Retainer |
Ball Circuit |
Weight g |
dr | D | L | Flange | Dynamic C(N) |
Static Co(N) |
||||||||
| Df | t | Dp | X | Y | Z | ||||||||||||
LMF8UU-RB |
LMF8-A-RB | 4 | 37 | 8 | 15 | 24 | 32 | 5 | 24 | 3.5 | 6 | 3.1 | 12 | 12 | 265 | 380 | LMF8-RB |
LMF10UU-RB |
LMF10-A-RB | 4 | 72 | 10 | 19 | 29 | 40 | 6 | 29 | 4.5 | 7.5 | 4.1 | 12 | 12 | 370 | 545 | LMF10-RB |
LMF12UU-RB |
LMF12-A-RB | 4 | 76 | 12 | 21 | 30 | 42 | 6 | 32 | 4.5 | 7.5 | 4 1 | 12 | 12 | 410 | 595 | LMF12-RB |
LMF16UU-RB |
LMF16-A-RB | 5 | 120 | 16 | 28 | 37 | 48 | 6 | 38 | 4.5 | 7.5 | 4.1 | 12 | 12 | 775 | 1180 | LMF16-RB |
LMF20UU-RB |
LMF20-A-RB | 5 | 180 | 20 | 32 | 42 | 54 | 8 | 43 | 5.5 | 9 | 5.1 | 15 | 15 | 882 | 1370 | LMF20-RB |
LMF25UU-RB |
LMF25-A-RB | 6 | 340 | 25 | 40 | 59 | 62 | 8 | 51 | 5.5 | 9 | 5.1 | 15 | 15 | 980 | 1570 | LMF25-RB |
LMF30UU-RB |
LMF30-A-RB | 6 | 470 | 30 | 45 | 64 | 74 | 10 | 60 | 6.6 | 11 | 6.1 | 15 | 15 | 1570 | 2740 | LMF30-RB |
| Nominal Part No. | Major Dimensions (mm) | Eccentricity Ī¼m |
Squareness Ī¼m |
Basic Load Rating | Nominal Part No. |
|||||||||||||
| Resin Retainer |
Stainless Steel Retainer |
Ball Circuit |
Weight g |
dr | D | L | Flange | Dynamic C(N) |
Static Co(N) |
|||||||||
| Df | K | t | Dp | X | Y | Z | ||||||||||||
LMK8UU-RB |
LMK8-A-RB | 4 | 29 | 8 | 15 | 24 | 32 | 25 | 5 | 24 | 3.5 | 6 | 3.1 | 12 | 12 | 265 | 380 | LMK8-RB |
LMK10UU-RB |
LMK10-A-RB | 4 | 52 | 10 | 19 | 29 | 40 | 30 | 6 | 29 | 4.5 | 7.5 | 4.1 | 12 | 12 | 370 | 545 | LMK10-RB |
LMK12UU-RB |
LMK12-A-RB | 4 | 57 | 12 | 21 | 30 | 42 | 32 | 6 | 32 | 4.5 | 7.5 | 4 1 | 12 | 12 | 410 | 595 | LMK12-RB |
LMK16UU-RB |
LMK16-A-RB | 5 | 104 | 16 | 28 | 37 | 48 | 37 | 6 | 38 | 4.5 | 7.5 | 4.1 | 12 | 12 | 775 | 1180 | LMK16-RB |
LMK20UU-RB |
LMK20-A-RB | 5 | 145 | 20 | 32 | 42 | 54 | 42 | 8 | 43 | 5.5 | 9 | 5.1 | 15 | 15 | 882 | 1370 | LMK20-RB |
LMK25UU-RB |
LMK25-A-RB | 6 | 300 | 25 | 40 | 59 | 62 | 50 | 8 | 51 | 5.5 | 9 | 5.1 | 15 | 15 | 980 | 1570 | LMK25-RB |
LMK30UU-RB |
LMK30-A-RB | 6 | 375 | 30 | 45 | 64 | 74 | 58 | 10 | 60 | 6.6 | 11 | 6.1 | 15 | 15 | 1570 | 2740 | LMK30-RB |
| Nominal Part No | Major Dimensions (mm) | Eccentricity Ī¼m |
Squareness Ī¼m |
Basic Load Rating | Nominal Part No. |
||||||||||||||
| Resin Retainer |
Stainless Steel Retainer |
Ball Circuit |
Weight g |
dr | D | L | Flange | Dynamic C(N) |
Static Co(N) |
||||||||||
| Df | W | t | A | F | X | F | Z | ||||||||||||
LMH8UU-RB |
LMH8-A-RB | 4 | 33 | 8 | 15 | 24 | 32 | 21 | 5 | 24 | _ | 3.5 | 6 | 3.1 | 12 | 12 | 265 | 380 | LMH8-RB |
LMH10UU-RB |
LMH10-A-RB | 4 | 64 | 10 | 19 | 29 | 40 | 25 | 6 | 29 | – | 4.5 | 7.5 | 4.1 | 12 | 12 | 370 | 545 | LMH10-RB |
LMH12UU-RB |
LMH12-A-RB | 4 | 68 | 12 | 21 | 30 | 42 | 27 | 6 | 32 | – | 4.5 | 7.5 | 4 1 | 12 | 12 | 410 | 595 | LMH12-RB |
LMH16UU-RB |
LMH16-A-RB | 5 | 112 | 16 | 28 | 37 | 48 | 34 | 6 | 31 | 22 | 4.5 | 7.5 | 4.1 | 12 | 12 | 775 | 1180 | LMH16-RB |
LMH20UU-RB |
LMH20-A-RB | 5 | 167 | 20 | 32 | 42 | 54 | 38 | 8 | 36 | 24 | 5.5 | 9 | 5.1 | 15 | 15 | 882 | 1370 | LMH20-RB |
LMH25UU-RB |
LMH25-A-RB | 6 | 325 | 25 | 40 | 59 | 62 | 46 | 8 | 40 | 32 | 5.5 | 9 | 5.1 | 15 | 15 | 980 | 1570 | LMH25-RB |
LMH30UU-RB |
LMH30-A-RB | 6 | 388 | 30 | 45 | 64 | 74 | 51 | 10 | 49 | 35 | 6.6 | 11 | 6.1 | 15 | 15 | 1570 | 2740 | LMH30-RB |
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