THK RA4
Cross Roller Bearing
THK RA4
Cross Roller Bearing
THK RA4 cross roller bearing, 4x12x3mm. Ultra-compact thin-section bearing with rollers arranged at 90 degrees for high rigidity in limited space.
Price Match Promise
Found it cheaper elsewhere? We’ll match any UK competitor’s price on bearings in stock — call us before you buy.
THK RA4 cross roller bearing, 4x12x3mm. Ultra-compact thin-section bearing with rollers arranged at 90 degrees for high rigidity in limited space.
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) | 4mm |
| Outer Diameter (D) | 12mm |
| Width (B) | 3mm |
Product Details
| Part Number | THK RA4 |
| Brand | THK |
| Bearing Type | Cross Roller Bearing |
| Seal Type | Open |
| Stock Status | In Stock |
Technical Datasheet
Download full specifications for THK RA4 — dimensions, load ratings, and material data.
Engineering support
Our experienced MRO products specialists are on hand to offer practical solutions to your problems and can assist with an on-site visit.
Call us01709 878282
Frequently Asked Questions
What is a THK RA4 bearing?
The THK RA4 is a THK Cross Roller Bearing with a 4mm bore, 12mm outer diameter and 3mm width. It is In Stock at Buy Bearings.
What are the THK RA4 dimensions?
The THK RA4 measures 4mm bore (inner diameter) × 12mm outer diameter × 3mm 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 RA4 in stock?
The THK RA4 is In Stock at Buy Bearings. Submit an enquiry or call our sales team for current stock and pricing (POA).