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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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261-280 of 491 products

261-280 of 491 products

616-MXL-025, Gates, PowerGrip® Imperial Timing Belt - 9277-41092

Imperial, Rubber, Timing belt, EAN code: 5412571235487

Brand	Gates
Mfr Part No.	616-MXL-025

$3.53

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640-MXL-025, Gates, PowerGrip® Imperial Timing Belt - 9277-54249

Imperial, Rubber, Timing belt, EAN code: 5412571264951

Brand	Gates
Mfr Part No.	640-MXL-025

$3.56

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640-MXL-025, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	640-MXL-025

$3.19

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This item is not currently available from our stocks.

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648-MXL-025, Gates, PowerGrip® Imperial Timing Belt - 9277-53929

Imperial, Rubber, Timing belt, EAN code: 5412571262889

Brand	Gates
Mfr Part No.	648-MXL-025

$3.53

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656-MXL-025, Gates, PowerGrip® Imperial Timing Belt - 9277-41116

Imperial, Rubber, Timing belt, EAN code: 5412571235593

Brand	Gates
Mfr Part No.	656-MXL-025

$3.56

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728-MXL-025, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	728-MXL-025

$3.30

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664-MXL-025, Gates, PowerGrip® Imperial Timing Belt - 9277-41124

Imperial, Rubber, Timing belt, EAN code: 5412571235647

Brand	Gates
Mfr Part No.	664-MXL-025

$3.56

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664-MXL-025, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	664-MXL-025

$3.19

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This item is not currently available from our stocks.

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66-XL-025, Gates, PowerGrip® Imperial Timing Belt - 9277-42595

Imperial, Rubber, Timing belt, EAN code: 5414465087646

Brand	Gates
Mfr Part No.	66-XL-025

$2.11

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672-MXL-025, Gates, PowerGrip® Imperial Timing Belt - 9277-41129

Imperial, Rubber, Timing belt, EAN code: 5412571235678

Brand	Gates
Mfr Part No.	672-MXL-025

$3.53

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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672-MXL-025, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	672-MXL-025

$3.19

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This item is not currently available from our stocks.

Despatch date information is on request.

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672-XL-025, Gates, PowerGrip® Imperial Timing Belt - 9277-54044

Imperial, Rubber, Timing belt, EAN code: 5412571263985

Brand	Gates
Mfr Part No.	672-XL-025

$8.42

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680-MXL-025, Gates, PowerGrip® Imperial Timing Belt - 9277-41820

Imperial, Rubber, Timing belt, EAN code: 5412571238594

Brand	Gates
Mfr Part No.	680-MXL-025

$3.61

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680-MXL-025, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	680-MXL-025

$3.19

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This item is not currently available from our stocks.

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696-MXL-025, Gates, PowerGrip® Imperial Timing Belt - 9257-90228

Imperial, Rubber, Timing belt, EAN code: 5412571227406

Brand	Gates
Mfr Part No.	696-MXL-025

$3.61

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560-MXL-025, Gates, PowerGrip® Imperial Timing Belt - 9277-53330

Imperial, Rubber, Timing belt, EAN code: 5412571260205

Brand	Gates
Mfr Part No.	560-MXL-025

$3.43

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560-MXL-025, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	560-MXL-025

$3.19

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This item is not currently available from our stocks.

Despatch date information is on request.

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564-XL-025, Gates, PowerGrip® Imperial Timing Belt - 9277-42609

Imperial, Rubber, Timing belt, EAN code: 5414465087585

Brand	Gates
Mfr Part No.	564-XL-025

$7.06

In stock ( * cut from sleeve )

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568-MXL-025, Gates, PowerGrip® Imperial Timing Belt - 9277-41051

Imperial, Rubber, Timing belt, EAN code: 5412571235319

Brand	Gates
Mfr Part No.	568-MXL-025

$3.53

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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568-MXL-025, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	568-MXL-025

$3.19

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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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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