Blackbearing D27 40x51.8x7 mm 45/45° Headset Bearing

Sealed Chrome Steel Bearing for Smooth Steering

Chrome Steel Construction
Protective Seals
Angular Contact Design

₹3,050

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The Blackbearing D27 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: Chrome steel races and balls provide durable rolling surfaces, while protective seals help prevent dust and moisture from reaching the internal components. Grease lubrication supports consistent bearing movement during regular riding.

Compatibility: The D27 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 diameters appear similar. Check the existing bearing markings before replacement.

Specifications

Reference No	HB-D27
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

Lubrication	Grease
Dimensions	40×51.8×7mm
Inner Diameter	40mm
Outer Diameter	51.8mm
Width	7mm
Contact Angle	45°/45°

Features

Chrome Steel Construction: Provides durable bearing races and rolling elements for regular cycling use.
Protective Seals: Help limit moisture and dust contamination.
Angular Contact Design: Supports the combined loading requirements of compatible bicycle headsets.
Grease Lubrication: Supports consistent bearing movement during regular use.
Replacement Cartridge Design: Allows worn headset bearings to be replaced individually.

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