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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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1-20 of 160 products

1-20 of 160 products

485-H-150, Gates, PowerGrip® Imperial Timing Belt - 9277-54076

Imperial, Rubber, Timing belt, EAN code: 5412571264289

Brand	Gates
Mfr Part No.	485-H-150

$44.89

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1150-H-150, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	1150-H-150

$111.62

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

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	340-H-150

$42.82

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PHG 420-H-150, SKF, Synchronous Imperial Timing Belt - PHG 420-H-150

Imperial, Rubber, Timing belt, EAN code: 07316572593219

Brand	SKF
Mfr Part No.	PHG 420-H-150

$18.55

Despatched in 1-2 days

PHG 510-H-150, SKF, Synchronous Imperial Timing Belt - PHG 510-H-150

Imperial, Rubber, Timing belt, EAN code: 07316572593431

Brand	SKF
Mfr Part No.	PHG 510-H-150

$22.51

Despatched in 1-2 days

300-H-150, Gates, PowerGrip® Imperial Timing Belt - 9257-43030

Imperial, Rubber, Timing belt, EAN code: 5412571225556

Brand	Gates
Mfr Part No.	300-H-150

$30.95

In stock ( * cut from sleeve )

630-H-150, ContiTech, CONTI® SYNCHROBELT Imperial Timing Belt

Imperial, Rubber, Timing belt, EAN code: 4051817003148

Brand	ContiTech
Mfr Part No.	630-H-150

$37.90

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PHG 850-H-150, SKF, Synchronous Imperial Timing Belt - PHG 850-H-150

Imperial, Rubber, Timing belt, EAN code: 07316572594124

Brand	SKF
Mfr Part No.	PHG 850-H-150

$37.55

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PHG 270-H-150, SKF, Synchronous Imperial Timing Belt - PHG 270-H-150

Imperial, Rubber, Timing belt, EAN code: 07316572592687

Brand	SKF
Mfr Part No.	PHG 270-H-150

$13.70

Despatched in 1-2 days

PHG 700-H-150, SKF, Synchronous Imperial Timing Belt - PHG 700-H-150

Imperial, Rubber, Timing belt, EAN code: 07316572593882

Brand	SKF
Mfr Part No.	PHG 700-H-150

$30.98

Despatched in 1-2 days

240-H-150, ContiTech, CONTI® SYNCHROBELT Imperial Timing Belt

Imperial, Rubber, Timing belt, EAN code: 4051817002349

Brand	ContiTech
Mfr Part No.	240-H-150

$19.10

In stock

390-H-150, ContiTech, CONTI® SYNCHROBELT Imperial Timing Belt

Imperial, Rubber, Timing belt, EAN code: 4051817002745

Brand	ContiTech
Mfr Part No.	390-H-150

$26.96

In stock

510-H-150, ContiTech, CONTI® SYNCHROBELT Imperial Timing Belt

Imperial, Rubber, Timing belt, EAN code: 4051817002943

Brand	ContiTech
Mfr Part No.	510-H-150

$32.43

In stock

270-H-150, Gates, PowerGrip® Imperial Timing Belt - 9257-43027

Imperial, Rubber, Timing belt, EAN code: 5412571225549

Brand	Gates
Mfr Part No.	270-H-150

$28.76

In stock ( * cut from sleeve )

1250-H-150, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	1250-H-150

$119.37

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360-H-150, Gates, PowerGrip® Imperial Timing Belt - 9257-43036

Imperial, Rubber, Timing belt, EAN code: 5412571225570

Brand	Gates
Mfr Part No.	360-H-150

$35.39

In stock ( * cut from sleeve )

PHG 300-H-150, SKF, Synchronous Imperial Timing Belt - PHG 300-H-150

Imperial, Rubber, Timing belt, EAN code: 07316572592786

Brand	SKF
Mfr Part No.	PHG 300-H-150

$15.19

Despatched in 1-2 days

255-H-150, ContiTech, CONTI® SYNCHROBELT Imperial Timing Belt

Imperial, Rubber, Timing belt, EAN code: 4051817002394

Brand	ContiTech
Mfr Part No.	255-H-150

$19.92

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PHG 1600-H-150, SKF, Synchronous Imperial Timing Belt - PHG 1600-H-150

Imperial, Rubber, Timing belt, EAN code: 07316572731918

Brand	SKF
Mfr Part No.	PHG 1600-H-150

$70.64

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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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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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