Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Couplings
Origin	-
Material	High-Grade Carbon Steel
Surface Treatment	Black Oxide Coating
Connection Type	Flat Single Keyway
Available Bore Sizes	15, 16, 18, 19, 20, 25, 28, 30, 32, 38, 42 mm
Application	Motor Oil Pump Coupling
Tolerance Level	H7/g6 Precision Fit
Hardness	HRC 28-32
Package Contents	1 x Coupling Sleeve
Origin	Manufactured in ISO Certified Facility
Weight	Varies by bore size (Approx. 0.2kg - 0.8kg)

6 reviews

Anonymous

Mar 24, 2026

Rating: 5/5

Standard industrial quality

No complaints here. It's a standard single keyway sleeve that does exactly what it should. Will buy again when needed.

Anonymous

Mar 18, 2026

Rating: 4/5

Good value, fast shipping

The coupling works well for our maintenance needs. Only giving 4 stars because the packaging was a bit greasy, but the part itself is solid.

Anonymous

Mar 16, 2026

Rating: 3/5

Works but tight tolerance

The 18mm version was a very tight fit. Had to use some gentle persuasion to get it seated. Once on, it holds well though.

Anonymous

Mar 13, 2026

Rating: 5/5

Reliable stock item

We keep these in various sizes for our workshop. Consistent quality across the different bore sizes we have purchased.

Anonymous

Mar 04, 2026

Rating: 5/5

Exactly as described

Needed a replacement for an old oil pump motor. The 30mm size fits perfectly. The black oxide finish looks durable too.

Anonymous

Mar 03, 2026

Rating: 5/5

Perfect fit for my hydraulic pump

Ordered the 25mm bore size and it slid right on with the correct amount of friction. The keyway alignment was spot on. Great quality steel.

5 FAQ

Q: Can I use this for high-speed applications?

A: This sleeve is designed primarily for motor oil pump couplings which typically operate at moderate speeds. For high-speed or high-torque applications, please consult our engineering team for a balanced coupling recommendation.

Q: What is the return policy if the bore size is wrong?

A: We accept returns within 30 days provided the item is unused and in original condition. Please ensure you measure your shaft diameter carefully before ordering.

Q: Is the 42mm size currently in stock?

A: Yes, all listed bore sizes including 42mm are currently in stock and ready to ship within 24 hours.

Q: Is this compatible with stainless steel shafts?

A: Yes, the carbon steel sleeve is compatible with stainless steel shafts. However, be aware of potential galvanic corrosion in wet environments; proper lubrication or anti-seize compound is recommended.

Q: Does this come with the key included?

A: No, this listing is for the coupling sleeve only. The flat key must be sourced separately according to your specific shaft dimensions.

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