CRBA Series
CRBA Split Outer Ring Crossed Roller Bearing
- Type
- Split outer ring (CRBA)
- Bore Diameter
- 20 - 400 mm
- Dynamic Load Rating
- 4.1 [kN] - 227 [kN]
- Accuracy Grades
- P5, P4, P2, PD5
Rollers cross at 90 degrees between the inner ring and two outer semi-rings, alternating orientation so a single CRBA bearing carries radial load, axial load in both directions and moment load at the same time. Rollers run in line contact with the track for small elastic deformation and high rigidity, with spacers between rollers to prevent mutual friction. The split outer ring suits inner-ring rotation, with the housing clamping the outer semi-rings.
Need to bolt the bearing straight to the housing? CRBD is the same split-outer-ring core with mounting holes, no clamping brackets required. View CRBD Series →
-
90°
Roller crossing angle, loads from every direction
-
39
Standard bearing sizes
-
532.9 kN
Max static load rating (CRBA 40035)
Applications
- Industrial robot joints
- Rotary tables and indexers
- Machine tools
- Automation control
- Inspection and measuring devices
- Medical devices
Sizes
Bearing numbers encode bore and width: CRBA 08016 is an 80 mm bore, 16 mm wide. All 39 sizes come sealed (WW) or open (NN), in clearance C8 (zero backlash) or C1 (low friction).
| Bearing No. | Bore Ø (mm) | Outer Ø (mm) | Width (mm) | Dynamic load C (kN) | Configure |
|---|---|---|---|---|---|
| CRBA 02008 | 20 | 36 | 8 | 4.1 | Configure ↗ |
| CRBA 02508 | 25 | 41 | 8 | 4.5 | Configure ↗ |
| CRBA 03010 | 30 | 55 | 10 | 8.2 | Configure ↗ |
| CRBA 03510 | 35 | 60 | 10 | 8.5 | Configure ↗ |
| CRBA 04010 | 40 | 65 | 10 | 9.3 | Configure ↗ |
| CRBA 04510 | 45 | 70 | 10 | 9.6 | Configure ↗ |
| CRBA 05013 | 50 | 80 | 13 | 18.9 | Configure ↗ |
| CRBA 06013 | 60 | 90 | 13 | 20.3 | Configure ↗ |
| CRBA 07013 | 70 | 100 | 13 | 21.7 | Configure ↗ |
| CRBA 08013 | 80 | 110 | 13 | 22.8 | Configure ↗ |
| CRBA 08016 | 80 | 120 | 16 | 30.2 | Configure ↗ |
| CRBA 09016 | 90 | 130 | 16 | 30.8 | Configure ↗ |
| CRBA 09020 | 90 | 140 | 20 | 39.7 | Configure ↗ |
| CRBA 10016 | 100 | 140 | 16 | 32.5 | Configure ↗ |
| CRBA 10020 | 100 | 150 | 20 | 40.4 | Configure ↗ |
| CRBA 11020 | 110 | 160 | 20 | 42.7 | Configure ↗ |
| CRBA 12016 | 120 | 150 | 16 | 28.1 | Configure ↗ |
| CRBA 12020 | 120 | 170 | 20 | 44.9 | Configure ↗ |
| CRBA 12025 | 120 | 180 | 25 | 66.3 | Configure ↗ |
| CRBA 13025 | 130 | 190 | 25 | 67.8 | Configure ↗ |
| CRBA 14025 | 140 | 200 | 25 | 69.5 | Configure ↗ |
| CRBA 15025 | 150 | 210 | 25 | 73.1 | Configure ↗ |
| CRBA 15030 | 150 | 230 | 30 | 114.3 | Configure ↗ |
| CRBA 16025 | 160 | 220 | 25 | 74.5 | Configure ↗ |
| CRBA 17020 | 170 | 220 | 20 | 52.3 | Configure ↗ |
| CRBA 18025 | 180 | 240 | 25 | 79.6 | Configure ↗ |
| CRBA 19025 | 190 | 240 | 25 | 54.5 | Configure ↗ |
| CRBA 20025 | 200 | 260 | 25 | 82.3 | Configure ↗ |
| CRBA 20030 | 200 | 280 | 30 | 122.9 | Configure ↗ |
| CRBA 20035 | 200 | 295 | 35 | 155.9 | Configure ↗ |
| CRBA 22025 | 220 | 280 | 25 | 86.3 | Configure ↗ |
| CRBA 24025 | 240 | 300 | 25 | 90.5 | Configure ↗ |
| CRBA 25025 | 250 | 310 | 25 | 91.6 | Configure ↗ |
| CRBA 25030 | 250 | 330 | 30 | 142 | Configure ↗ |
| CRBA 25040 | 250 | 355 | 40 | 207 | Configure ↗ |
| CRBA 30025 | 300 | 360 | 25 | 100.6 | Configure ↗ |
| CRBA 30035 | 300 | 395 | 35 | 191.6 | Configure ↗ |
| CRBA 30040 | 300 | 405 | 40 | 227 | Configure ↗ |
| CRBA 40035 | 400 | 480 | 35 | 219.4 | Configure ↗ |
Part numbers & options
How a part number reads
CRBA 080 16 WW C8 P5
- CRBA
- Model code — CRBA split outer · CRBB split inner · CRBC high rigidity · CRBD/CRBE with mounting holes · CRBX custom
- 080
- Bore diameter — 080 = 80 mm (20 to 400 mm)
- 16
- Width (mm)
- (blank)
- Mounting holes — always blank on CRBA · A/B/C apply to CRBD and CRBE only
- WW
- Seals — WW sealed both sides · NN open (both keep oil holes)
- C8
- Clearance — C8 negative, zero backlash · C1 positive, low friction
- P5
- Accuracy — P5 · P4 · P2 · PD5 · PD4 · PD2
The configurator assembles this number for you, with drawings and 3D CAD. Configure ↗
Accuracy grades
CRBA runs P5, P4, P2 and PD5; PD5 holds tighter bore and outside diameter tolerances at the same runout as P5 (inner-ring runout 4 to 15 µm by size).
- P5 Standard — General automation and fixtures
- P4 High — Robot joints, rotary tables
- P2 Precision — Machine tools, inspection equipment
- PD5 Tight-tolerance grade — Tighter bore and outside diameter tolerances at the same runout as P5
Internal clearance
- C8 Negative (preload) — Zero backlash for indexing and joints
- C1 Positive — Lower friction torque under light duty
Seals
- WW Sealed both sides — Keeps the track clean, retains grease
- NN Open — Lowest friction for low-torque axes
Mounting
- — Without holes — CRBA/CRBB/CRBC: clamp with brackets
- A Screw holes — CRBD/CRBE: bolt straight to the housing
- B/C Counter-bored — Same or opposite direction counter-bores
Other Crossed Roller Bearings
How buying works
Spec it in the configurator: drawings, 3D CAD, and a quote to follow.
HIWIN series are configured to your application, not bought off the shelf. Start from your loads and speeds if you are still choosing a size.
Rather talk it through? Request a quote from an application engineer.