Cema 6903LLB 2RS ABEC5 Chrome Steel Wheel Bearing 17x30x7 mm

Precision Chrome Steel Bearing for Bicycle Hubs

Chrome Steel Construction
ABEC5 Precision
Non-Contact Seals

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The Cema 6903LLB 2RS ABEC5 Chrome Steel Wheel Bearing is a replacement cartridge bearing designed for compatible bicycle wheel hubs. Manufactured with hardened chrome steel races and balls, it provides reliable rotational performance and durability for regular cycling. Its precision construction supports smooth wheel rotation, making it suitable for replacing worn or damaged bearings in compatible hub assemblies.

Precision Construction: The bearing meets ABEC5 precision standards and uses quality chrome steel components. Its construction supports consistent rotational movement within the hub, helping maintain smooth operation during everyday riding. It is a practical replacement option for cyclists and mechanics maintaining bicycle wheels.

Double-Sealed Protection: The LLB non-contact seals on both sides help retain lubrication while limiting the entry of dirt, moisture and other contaminants. This sealing arrangement provides protection without the additional seal drag associated with full-contact designs. Before installation, confirm that the bearing dimensions and sealing configuration match the original wheel hub bearing.

Specifications

Article Number	SRC-6903-LLB
Product Type	Wheel Hub Cartridge Bearing
Bearing Material	Chrome Steel
Seal Type	LLB Non-Contact
Closure Type	Double-Sealed ABEC5 Bearing

Dimensions	17×30×7mm
Inner Diameter	17mm
Outer Diameter	30mm
Width	7mm

Features

Chrome Steel Construction: Hardened steel races and balls provide durability and reliable rotational performance.
ABEC5 Precision: Supports consistent bearing operation through controlled manufacturing tolerances.
Non-Contact Seals: Help reduce seal drag while providing protection against contamination.
Double-Sealed Design: Helps retain internal lubrication and limit the entry of dirt and moisture.
Cartridge Bearing Construction: Designed for replacement in compatible bicycle wheel hubs.

Warranty and support

Covered by the manufacturer's warranty. Warranty claims go through us and we deal with the brand for you.

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Shipping and returns

We ship across India. Shipping is free on orders above ₹2,000 and ₹99 below that. Cash on delivery is available on orders up to ₹20,000, with a COD charge that depends on the order value. For a delivery estimate, enter your pincode in the box above the add-to-cart button: it shows the courier's own estimate for your address, not a promised date. If a parcel is held up we chase the courier until it is delivered. Full shipping policy

Returns can be started within 7 days of delivery on unused items in their original condition with all tags and packaging. Apparel, helmets, gloves and similar items are returnable; wetsuits and products discounted by more than 5% are not. Compatibility questions are not grounds for a return unless our listing was wrong, so ask us before you order if you are unsure. Return shipping is arranged by you; on an accepted return you can choose an exchange, store credit or a refund after shipping and transaction charges. Orders can be cancelled only until they are processed. Full return and refund policy