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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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181-200 of 2878 products

181-200 of 2878 products

300-H-200, Gates, PowerGrip® Imperial Timing Belt - 9257-44030

Imperial, Rubber, Timing belt, EAN code: 5412571225792

Brand	Gates
Mfr Part No.	300-H-200

$43.44

In stock ( * cut from sleeve )

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

Imperial, Rubber, Timing belt, EAN code: 4051817010566

Brand	ContiTech
Mfr Part No.	300-XL-037

$4.03

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This item is currently out of stock.

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465-H-100, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	465-H-100

$36.78

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This item is currently out of stock.

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290-XL-031, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	290-XL-031

$6.15

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This item is currently out of stock.

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320-H-100, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	320-H-100

$28.47

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This item is currently out of stock.

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400-H-100, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	400-H-100

$33.26

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This item is currently out of stock.

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PHG 700-H-100, SKF, Synchronous Imperial Timing Belt - PHG 700-H-100

Imperial, Rubber, Timing belt, EAN code: 07316572593875

Brand	SKF
Mfr Part No.	PHG 700-H-100

$25.45

Despatched in 2-3 days

700-XH-300, Gates, PowerGrip® Imperial Timing Belt - 9257-52070

Imperial, Rubber, Timing belt, EAN code: 5412571226423

Brand	Gates
Mfr Part No.	700-XH-300

$192.46

In stock ( * cut from sleeve )

PHG 315-L-075, SKF, Synchronous Imperial Timing Belt - PHG 315-L-075

Imperial, Rubber, Timing belt, EAN code: 07316572733509

Brand	SKF
Mfr Part No.	PHG 315-L-075

Request a price

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350-H-150, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	350-H-150

$43.38

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This item is currently out of stock.

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PHG 390-H-100, SKF, Synchronous Imperial Timing Belt - PHG 390-H-100

Imperial, Rubber, Timing belt, EAN code: 07316572593097

Brand	SKF
Mfr Part No.	PHG 390-H-100

$16.30

Despatched in 2-3 days

390-H-200, Gates, PowerGrip® Imperial Timing Belt - 9257-44039

Imperial, Rubber, Timing belt, EAN code: 5412571225822

Brand	Gates
Mfr Part No.	390-H-200

$53.52

In stock ( * cut from sleeve )

390-H-300, ContiTech, CONTI® SYNCHROBELT Imperial Timing Belt

Imperial, Rubber, Timing belt, EAN code: 4051817002769

Brand	ContiTech
Mfr Part No.	390-H-300

$50.87

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This item is currently out of stock.

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PHG 390-L-100, SKF, Synchronous Imperial Timing Belt - PHG 390-L-100

Imperial, Rubber, Timing belt, EAN code: 07316572595039

Brand	SKF
Mfr Part No.	PHG 390-L-100

$14.71

Despatched in 2-3 days

PHG 430-H-100, SKF, Synchronous Imperial Timing Belt - PHG 430-H-100

Imperial, Rubber, Timing belt, EAN code: 07316572728581

Brand	SKF
Mfr Part No.	PHG 430-H-100

$15.65

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PHG 450-H-150, SKF, Synchronous Imperial Timing Belt - PHG 450-H-150

Imperial, Rubber, Timing belt, EAN code: 07316572593264

Brand	SKF
Mfr Part No.	PHG 450-H-150

$24.68

Despatched in 2-3 days

450-L-100, ContiTech, CONTI® SYNCHROBELT Imperial Timing Belt

Imperial, Rubber, Timing belt, EAN code: 4051817004848

Brand	ContiTech
Mfr Part No.	450-L-100

$18.22

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This item is currently out of stock.

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PHG 900-H-100, SKF, Synchronous Imperial Timing Belt - PHG 900-H-100

Imperial, Rubber, Timing belt, EAN code: 07316572594216

Brand	SKF
Mfr Part No.	PHG 900-H-100

$32.73

Despatched in 2-3 days

98-XL-031, ContiTech, CONTI® SYNCHROBELT Imperial Timing Belt

Imperial, Rubber, Timing belt, EAN code: 4051817008600

Brand	ContiTech
Mfr Part No.	98-XL-031

$2.24

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This item is currently out of stock.

You may place your order now and we will dispatch it as soon as stock arrives.

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

Imperial, Rubber, Timing belt, EAN code: 4051817008617

Brand	ContiTech
Mfr Part No.	98-XL-037

$2.51

Available to back order What does this mean?

This item is currently out of stock.

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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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