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THK RA8
Cross Roller Bearing
THK RA8
Cross Roller Bearing
THK RA8 cross roller bearing, 8x20x5mm. Small cross roller bearing for precision rotary tables and medical equipment.
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THK RA8 cross roller bearing, 8x20x5mm. Small cross roller bearing for precision rotary tables and medical equipment.
Price Match Promise
Found it cheaper elsewhere? We’ll match any UK competitor’s price on bearings in stock — call us before you buy.
Technical Dimensions & Load Ratings
Confirm these values match your shaft, housing and application requirements before ordering.
Dimensions
| Bore Diameter (d) | 8mm |
| Outer Diameter (D) | 20mm |
| Width (B) | 5mm |
THK RA8
Cross Roller Bearing
Technical Specifications
| Part Number | THK RA8 |
| Brand | THK |
| Bearing Type | Cross Roller Bearing |
| Seal Type | Open |
| Bore (Inner Diameter) | 8 mm |
| Outer Diameter | 20 mm |
| Width / Thickness | 5 mm |
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Technical Datasheet
Download full specifications for THK RA8 — dimensions, load ratings, and material data.
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About the THK THK RA8
The THK THK RA8, is a cross roller bearing, in an open configuration for maximum speed and easy relubrication, featuring a 8mm bore, 20mm outer diameter, and 5mm width, and is in stock at Buy Bearings.
THK RA8 cross roller bearing, 8x20x5mm. Small cross roller bearing for precision rotary tables and medical equipment.
Key Specifications
The THK RA8 cross roller bearing is specified with 8mm bore (inner diameter), 20mm outer diameter, 5mm width. The Open sealing arrangement protects against contamination and retains lubricant for extended service life.
Common Applications
Cross Roller Bearings are commonly used in:
Why Buy the THK RA8 from Buy Bearings?
- UK-authorised distributor with genuine THK products
- Expert technical support from our engineering team
- Competitive pricing with fast UK dispatch
- Full technical datasheet and cross-reference support
- 30-day returns on standard products
Frequently Asked Questions
What is a THK RA8 bearing?
The THK RA8 is a THK Cross Roller Bearing with a 8mm bore, 20mm outer diameter and 5mm width. It is In Stock at Buy Bearings.
What are the THK RA8 dimensions?
The THK RA8 measures 8mm bore (inner diameter) × 20mm outer diameter × 5mm width.
What does Open mean on a bearing?
Open bearings have no seals or shields, allowing maximum speed and easy relubrication — best for clean, lubricated environments.
Is the THK RA8 in stock?
The THK RA8 is In Stock at Buy Bearings. Submit an enquiry or call our sales team for current stock and pricing (POA).
Related Parts — Seals & Bushings
Matching seals and bushings for 8mm shaft diameter — complementary components for your bearing.
