JNS RNA 4906 Needle Roller Bearing 35x47x17mm No Inner Ring Machined NOS Single

JNS RNA 4906 — Machined Needle Roller Bearing (No Inner Ring)

Brand: JNS (Japan) Part Number: RNA 4906 Condition: NOS — New Old Stock, factory-new and unused

IMPORTANT: This listing is for ONE (1) bearing. The photo may show multiple bearings for reference, but only one bearing will be shipped per purchase. Order the quantity you need.

WHAT IT IS

The JNS RNA 4906 is a machined-ring needle roller bearing without an inner ring. The "RNA" designation means the bearing runs directly on a hardened and ground shaft, which serves as the inner raceway — saving space and reducing cost in applications where the shaft is already suitable. The needle rollers are guided by a steel cage within a machined outer ring.

Needle roller bearings deliver exceptionally high radial load capacity in a compact cross-section, making them essential where space is limited but radial loads are heavy. The RNA 4906 size is widely used across automotive, agricultural, industrial, and general machinery applications.

NOTE: This bearing requires the shaft itself to be hardened (typically 58-65 HRC) and ground to a proper surface finish to serve as the raceway. If your shaft is not hardened, you need the NA 4906 variant (with inner ring) instead.

SPECIFICATIONS

• Bore (Fw, shaft size): 35 mm
• Outer diameter (D): 47 mm
• Width (C): 17 mm
• Bearing type: Machined needle roller, no inner ring (RNA series)
• Cage: Steel
• Outer ring: Lubrication hole on outer ring
• Basic dynamic load rating: ~25 kN
• Basic static load rating: ~35-39 kN
• Limiting speed: ~11,000-13,000 rpm
• Weight: ~0.17 lbs (0.07 kg)
• Operating temperature range: up to approximately 120°C

COMMON APPLICATIONS

This bearing size is widely used in automotive transmissions and differentials, agricultural equipment, industrial gearboxes, hydraulic and pneumatic equipment, machine tools, automotive accessories, power tools, and general industrial machinery where a compact, high-load needle bearing is required.

CROSS-REFERENCES / SUPERSEDES

This is an industry-standard part number — fully cross-compatible with all major bearing manufacturers under the same RNA 4906 designation: IKO RNA 4906, NSK RNA 4906, NTN RNA 4906, INA RNA 4906, SKF RNA 4906, Koyo RNA 4906, Timken RNA 4906, NBS RNA 4906, NRB RNA 4906. The base RNA 4906 number is the same across manufacturers; suffix variations (UU = sealed both sides, 2RS = rubber sealed, etc.) denote sealing options. This is the standard open variant.

If your application uses the NA 4906 variant (with inner ring), this RNA version is NOT a direct substitute without adding a separate inner ring.

CONDITION DETAILS

This is genuine JNS New Old Stock from Japan. The bearing is factory-new, unused, and in full working condition. Original packaging may show shelf wear, dust, or minor cosmetic flaws from long-term storage.

RETURNS

30-day return policy. If you're not satisfied for any reason, you may open a return request through eBay within 30 days of purchase.

Please verify this part number, dimensions, and configuration (RNA = no inner ring; bearing runs directly on hardened shaft) match your application before purchasing. If you have questions, message us before buying — we're glad to help!