Open Deep Groove Ball Bearing 6305 2RS C3 25x62x17mm

Koyo Deep Groove Ball Bearing 6305 2RS C3 – 25×62×17mm

The Koyo 6305 2RS C3 is an open deep groove ball bearing with rubber seals on both sides and C3 internal clearance, measuring 25mm bore × 62mm OD × 17mm width. Deep groove ball bearings are the most widely used bearing type in automotive gearboxes, offering versatility, durability, and the ability to accommodate both radial and axial loads. The C3 clearance designation indicates greater-than-normal internal play, making this bearing well suited to applications with interference fits or elevated operating temperatures.

Inner diameter: 25mm

Outer diameter: 62mm

Width: 17mm

Clearance: C3 (greater than normal)

Seals: 2RS (rubber sealed both sides)

Brand: Koyo (Jtekt)

Part number(s): 6305 2RS C3 · 63052RSC3 · 6305 2RS C3 TN9 · 6305 TN9 2RS C3 · 6305 T1X DDU C3 · 6305 2RS/C3 FG · 08133-63057 (Suzuki) · 08133-63050 (Suzuki)

What is C3 internal clearance and why does it matter?

C3 clearance is greater than the standard (CN) clearance. This accommodates thermal expansion of the shaft and housing during operation, and allows interference fits without clamping the bearing rolling elements. It is the most common choice for gearbox bearings that run warm or are press-fitted.

What does 2RS mean?

2RS means the bearing has rubber contact seals on both sides. These retain grease and exclude contamination, making 2RS bearings pre-lubricated and suitable for applications where re-greasing is not practical.

Is Koyo a quality brand for gearbox use?

Yes. Koyo is the bearing division of Jtekt Corporation (Toyota Group) and manufactures to OEM quality standards. Koyo bearings are used as original equipment in numerous automotive transmissions worldwide.

Can I confirm fitment for my gearbox?

Send us your gearbox code and we will help verify that this bearing is the correct specification for your application.

Why Choose Eco Torque?

As specialists in gearbox rebuilds and repairs, Eco Torque takes pride in offering genuine gearbox parts, high-quality aftermarket alternatives and competitive pricing.

Need Help Finding the Right Part?

If you are unsure whether this part is compatible with your vehicle, send us your UK registration number or VIN and we will help you find the correct part.

Reference Number: ET2504