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Imperial Timing Belts

Imperial timing belts (also known as inch pitch timing belts) feature moulded teeth spaced according to inch measurements rather than millimetres. These belts must be paired with matching imperial timing pulleys to ensure correct meshing and performance.

At ACORN®, we supply a comprehensive range of imperial timing belts in stock and available to buy online today, with fast UK and worldwide delivery.

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281-300 of 310 products

281-300 of 310 products

344-XL-037, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	344-XL-037

$7.85

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This item is not currently available from our stocks.

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348-XL-037, Gates, PowerGrip® Imperial Timing Belt - 9277-54015

Imperial, Rubber, Timing belt, EAN code: 5412571263701

Brand	Gates
Mfr Part No.	348-XL-037

$6.82

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350-XL-037, ContiTech, CONTI® SYNCHROBELT Imperial Timing Belt

Imperial, Rubber, Timing belt, EAN code: 4051817010832

Brand	ContiTech
Mfr Part No.	350-XL-037

$4.49

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350-XL-037, Gates, PowerGrip® Imperial Timing Belt - 9277-42566

Imperial, Rubber, Timing belt, EAN code: 5414465078170

Brand	Gates
Mfr Part No.	350-XL-037

$6.85

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350-XL-037, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	350-XL-037

$7.85

Available to back order What does this mean?

This item is not currently available from our stocks.

Despatch date information is on request.

Ask about despatch

352-XL-037, ContiTech, CONTI® SYNCHROBELT Imperial Timing Belt

Imperial, Rubber, Timing belt, EAN code: 4051817010863

Brand	ContiTech
Mfr Part No.	352-XL-037

$4.49

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This item is not currently available from our stocks.

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352-XL-037, Gates, PowerGrip® Imperial Timing Belt - 9277-52817

Imperial, Rubber, Timing belt, EAN code: 5412571257366

Brand	Gates
Mfr Part No.	352-XL-037

$6.87

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58-XL-037, Gates, PowerGrip® Imperial Timing Belt - 9277-53969

Imperial, Rubber, Timing belt, EAN code: 5412571263275

Brand	Gates
Mfr Part No.	58-XL-037

$3.03

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580-XL-037, Gates, PowerGrip® Imperial Timing Belt - 9277-52894

Imperial, Rubber, Timing belt, EAN code: 5412571257885

Brand	Gates
Mfr Part No.	580-XL-037

$10.90

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580-XL-037, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	580-XL-037

$12.53

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This item is not currently available from our stocks.

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592-XL-037, Gates, PowerGrip® Imperial Timing Belt - 9277-42414

Imperial, Rubber, Timing belt, EAN code: 5412571241235

Brand	Gates
Mfr Part No.	592-XL-037

$11.15

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60-XL-037, ContiTech, CONTI® SYNCHROBELT Imperial Timing Belt

Imperial, Rubber, Timing belt, EAN code: 4051817008310

Brand	ContiTech
Mfr Part No.	60-XL-037

$2.24

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60-XL-037, Gates, PowerGrip® Imperial Timing Belt - 9257-22006

Imperial, Rubber, Timing belt, EAN code: 5412571224245

Brand	Gates
Mfr Part No.	60-XL-037

$3.06

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60-XL-037, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	60-XL-037

$3.87

Available to back order What does this mean?

This item is not currently available from our stocks.

Despatch date information is on request.

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540-XL-037, Gates, PowerGrip® Imperial Timing Belt - 9277-52884

Imperial, Rubber, Timing belt, EAN code: 5412571257816

Brand	Gates
Mfr Part No.	540-XL-037

$10.16

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554-XL-037, Gates, PowerGrip® Imperial Timing Belt - 9277-42401

Imperial, Rubber, Timing belt, EAN code: 5412571241136

Brand	Gates
Mfr Part No.	554-XL-037

$10.41

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50-XL-037, Gates, PowerGrip® Imperial Timing Belt - 9257-01321

Imperial, Rubber, Timing belt, EAN code: 5414465835049

Brand	Gates
Mfr Part No.	50-XL-037

$2.96

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506-XL-037, Gates, PowerGrip® Imperial Timing Belt - 9277-52880

Imperial, Rubber, Timing belt, EAN code: 5412571257779

Brand	Gates
Mfr Part No.	506-XL-037

$9.54

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This item is not currently available from our stocks.

Despatch date information is on request.

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514-XL-037, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	514-XL-037

$11.28

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This item is not currently available from our stocks.

Despatch date information is on request.

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630-XL-037, ContiTech, CONTI® SYNCHROBELT Imperial Timing Belt

Imperial, Rubber, Timing belt, EAN code: 4051817011495

Brand	ContiTech
Mfr Part No.	630-XL-037

$7.82

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Common imperial pitches include

MXL
XL
L
H
XH
XXH

Each pitch is designed for specific torque and load capacities, making correct selection essential.

Key Benefits

Positive drive with zero slippage
Precise shaft synchronisation
High efficiency power transmission
Reduced maintenance compared to chain drives
Smooth, low-noise operation
Long service life

Imperial synchronous belts are widely used where consistent positioning and repeatability are critical.

Available Sizes & Specifications

When selecting an imperial timing belt, key factors include:

Pitch type (e.g., XL, L, H)
Belt length (in inches)
Belt width (in inches)
Tooth profile
Construction material (neoprene, polyurethane)
Tensile reinforcement type

If you have an existing belt code, it typically includes pitch and length information for easy identification.

Imperial Timing Belts FAQs

Are imperial and metric timing belts interchangeable?

No. Imperial belts use inch-based pitch measurements, while metric belts use millimetres (e.g., 5M, 8M, 14M). They are not interchangeable, even if they appear similar in size.

How do I identify my imperial timing belt size?

You will need to confirm:

Belt pitch (e.g., XL, L, H)
Belt length (in inches)
Belt width (in inches)

Most belts have a printed code that includes this information. If the marking is worn, measuring tooth pitch and belt length can help determine the correct replacement.

What causes imperial timing belts to fail?

Common causes of failure include:

Incorrect belt tension
Pulley misalignment
Overloading
Contamination from oil or debris
Mixing metric and imperial components

Routine inspection and proper installation significantly extend belt life.

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