Blackbearing D25 40x51.8x7.5 mm 36/45° Headset Bearing

Chrome Steel Headset Bearing With Labyrinth Seals

Chrome Steel Construction
Double-Lip Labyrinth Seals
Precision-Ground Raceways

₹3,050

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The Blackbearing D25 Headset Bearing is a replacement angular contact cartridge bearing designed for compatible bicycle headset assemblies. Its chrome steel construction provides a durable solution for replacing worn bearings and maintaining smooth, consistent steering.

Reliable operation: Precision-ground raceways support smooth bearing movement, while double-lip labyrinth seals help protect the internal components against water and dust. Grease lubrication and a metal ball cage contribute to dependable operation during regular riding.

Compatibility: The D25 must match the original headset bearing's dimensions and contact angles. Bearings with different angular specifications or heights may not seat correctly, even when their inner and outer diameters match. Check the existing bearing markings before replacement.

Specifications

Reference No	HB-D25
Product Type	Headset Cartridge Bearing
Recommended Use	Bicycle Headset Assemblies
Bearing Type	Angular Contact
Bearing Material	Chrome Steel
Ball Material	Chrome Steel
Seal Type	2RS Double-Lip Labyrinth Seals
Raceway Finish	Precision-Ground

Ball Cage Material	Metal
Lubrication	Grease
Dimensions	40×51.8×7.5mm
Inner Diameter	40mm
Outer Diameter	51.8mm
Width	7.5mm
Contact Angle	36°/45°

Features

Chrome Steel Construction: Provides durable bearing races and rolling elements for regular cycling use.
Double-Lip Labyrinth Seals: Help limit water and dust contamination.
Precision-Ground Raceways: Support smooth rotation and consistent bearing operation.
Metal Ball Cage: Maintains correct positioning of the rolling elements.
Grease Lubrication: Supports dependable bearing movement during regular riding.

Warranty and support

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

Questions after delivery? Ask TBA Guide or WhatsApp us.

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