Koyo 63/28 C4 Ball Bearing 28x68x18mm
Ex VAT: £17.71
✓ In stock at our Arlesey workshop
Order before 2pm on a working day and this is picked and dispatched the same day by express courier, normally with you in 1–2 working days.
Free delivery to most UK addresses. Some remote Scottish postcodes and offshore islands may pay a delivery charge, shown at checkout; international postage is calculated at checkout. We don’t currently deliver to Northern Ireland. Delivery details
Collection from Arlesey also available — choose it at checkout.
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Delivery and Shipping
Delivery and Shipping
UK delivery — parts we hold in stock
Ordered before 2pm on a working day, these are dispatched the same day by express courier and normally arrive within 1–2 working days. Delivery is included in the price for most UK addresses.
Remote postcodes, islands and Northern Ireland
Orders up to 2kg go by Royal Mail at no extra charge anywhere we deliver. Heavier or higher-value orders go by DHL Express, and DHL's remote area charge applies to certain Scottish Highlands and Islands postcodes — it is calculated automatically and shown at checkout before you pay. The Isle of Wight, Isles of Scilly, Isle of Man and the Channel Islands carry a delivery charge shown at checkout. Orders over 30kg go by pallet to the UK mainland only. We don't currently deliver to Northern Ireland.
Parts supplied from our European supplier
A large part of our range is held by our supplier in Germany rather than on our own shelves. We order these in for you as soon as you place the order. They normally dispatch within 7–10 working days, and are then sent on by express courier like anything else. Nothing ships to you direct from Germany — it comes to our Arlesey workshop first, so you deal only with us for returns and warranty.
Collection from Arlesey
Click and collect is available on parts we physically hold. If an item has to come in from our supplier it cannot be collected, and checkout will tell you so before you pay.
International
Postage is calculated at checkout from the weight and destination. Where both are available you can choose DHL Economy Select or the faster DHL Express Worldwide. Any customs charges or excise duties are the responsibility of the buyer.
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Koyo 63/28 C4 Deep Groove Ball Bearing – 28x68x18mm
The Koyo 63/28 C4 is a deep groove single-row ball bearing with C4 internal clearance, designed for high-heat environments and extended wear resistance. The C4 clearance makes it ideal for heavy-duty machinery, automotive engines, and high-speed applications where standard bearings might fail under thermal stress.
Inner Diameter: 28mm
Outer Diameter: 68mm
Width: 18mm
Clearance: C4 (extended internal clearance for thermal expansion)
Seals/Shields: Open
Part Number: 63/28 C4
What does C4 clearance mean?
C4 clearance is greater than standard (C0/CN) clearance. It accommodates greater thermal expansion, making this bearing suitable for high-temperature or high-speed applications where thermal growth could cause bearing preload.
What is the difference between 63/28 and 63/28 C4?
The C4 suffix indicates increased internal clearance. A standard 63/28 (C0) would be unsuitable in high-temperature environments where this C4 variant is specified.
Is this bearing suitable for gearbox use?
Yes. Open-type deep groove ball bearings with C4 clearance are used in manual gearboxes where oil lubrication is provided by the gearbox itself.
What is the ball row configuration?
This is a single-row deep groove ball bearing.
How do I verify fitment?
Match part number 63/28 C4 or dimensions: bore 28mm, OD 68mm, width 18mm. Send your UK registration or VIN if unsure.
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: ET2105
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