RNA6903R

Tier-one manufacturer — brand supplied may vary ✓ Dimensions checked: ISO table and supplier data agree
$25.34 USD
$25.34 USD
Sale Sold out
Bore22 mm 0.8661 in
Outside dia.30 mm 1.1811 in
Width23 mm 0.9055 in
TypeNeedle roller bearing without inner ring
SealingOpen
Ships from US partner stock — flat-rate shipping, calculated by weight at checkout
  • RNA6903R Needle Roller Bearings
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Image is for illustration purposes only.

RNA6903R specifications

Specification Metric Inch Basis
Bore (d) 22 mm 0.8661 in ISO table for this designation, confirmed by supplier data
Outside diameter (D) 30 mm 1.1811 in ISO table for this designation, confirmed by supplier data
Width (B) 23 mm 0.9055 in ISO table for this designation, confirmed by supplier data
Bearing type Needle roller bearing without inner ring Stated by the designation
Seals / shields Open Supplier catalogue listing
Cage Steel Supplier catalogue listing
Material High carbon chrome steel Supplier catalogue listing
Reference ratings: NTN RNA6903R catalogue values. Ratings differ slightly between makers; the brand we ship may vary.
Dynamic load rating, C18.24 kN4,101 lbf
Static load rating, C027.13 kN6,099 lbf
Limiting speed, grease12,000 rpm
Limiting speed, oil18,000 rpm

RNA6903R is a needle roller bearing without inner ring, 22 mm bore × 30 mm OD × 23 mm wide (0.8661 × 1.1811 × 0.9055 in). NTN catalogue values for RNA6903R: dynamic load rating C = 18.24 kN, static C0 = 27.13 kN, limiting speed 12,000 rpm on grease, 18,000 rpm on oil.

The RNA6903R is a machined-ring needle roller bearing designed to operate without an inner ring. The bearing uses the shaft itself as the inner raceway, requiring a hardened and ground shaft surface for proper operation.

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