VXB

S6903-2RS Ceramic Bearing Si3N4 Premium ABEC-7 17x30x7 Bearings

Regular price $19.99 Sale price$88.99you save $69.00
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SKU: Kit7664
UPC: 00193019074374
Item: S6903-2RS Ball Bearings
Type: Deep Groove Radial Ball Bearing
Balls: Ceramic Si3N4
Radial Clearance: C0
Cage: Stainless Steel
S6903-2RS Sealed Ball Bearing
Premium ABEC-7 Quality with Si3N4 Ceramic Balls
(Silicon Nitride)
17mm x 30mm x 7mm


S6903-2RS Sealed Ball Bearing is double sealed, radial and deep groove ball bearing,bearing is made from stainless steel with Ceramic Balls (Si3N4) and Stainless steel cage,S6903-2RS bearing is closed with rubber seals to protect the bearing from dust or any possible contamination,bearing is sealed and self lubricated,the quality is set to EMQ (Premium ABEC-7 quality) to ensure high speed,S6903-2RS bearing is lubricated with grease.

  • Item: S6903-2RS Ball Bearings
  • Type: Deep Groove Radial Ball Bearing
  • Balls: Ceramic Si3N4
  • Radial Clearance: C0
  • Cage: Stainless Steel
  • Quality: Premium ABEC-7
  • Material: Stainless Steel
  • Lubrication: Self Lubricated (Grease SRL) Bearing
  • Closures: Double sealed with rubber seals RS/RS1/2RS1
  • Dimensions: 17mm x 30mm x 7mm/Metric
  • ID (inner diameter)/Bore: 17mm
  • OD (outer diameter): 30m
  • Width: 7mm
  • Size: 17 x 30 x 7 mm
  • Quantity: 1 Bearing
  • Equivalents: 6903-2RS1 & 6903-2RZ SS61903-2RS1 P4 & SS61903RS1 Bearings

VXB Category: Hybrid ceramic bearings



💡 What Does ABEC-7 Mean?

ABEC-7 is a high-precision rating from the Annular Bearing Engineers’ Committee (ABEC), indicating extremely tight manufacturing tolerances. These bearings provide ultra-smooth, low-friction performance and are often used in high-speed, high-accuracy applications.

ABEC-7 bearings are commonly found in precision instruments, aerospace equipment, high-end electric motors, and demanding industrial machinery. They offer exceptional performance but are typically more expensive due to the level of accuracy involved.

Customer Reviews

Based on 3 reviews
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G
George
Smooth running, fit great, well sealed

Very happy with the bearing, it fit my Campagnolo bottom bracket perfectly and it's better than the original because it is sealed on both sides. The original failed due to the lack of a seal on the inside edge. Thank you!

n
nono
verry good

verry good

c
c40rider
Great high quality bearings

These bearings are excellent quality and fit was pefect in my Alchemy racing hub. Super upgrade to the stock bearings. Hub spins forever with these bearings installed.