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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 280 products

181-200 of 280 products

255-H-100, ContiTech, CONTI® SYNCHROBELT Imperial Timing Belt

Imperial, Rubber, Timing belt, EAN code: 4051817002387

Brand	ContiTech
Mfr Part No.	255-H-100

$14.09

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This item is not currently available from our stocks.

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255-H-100, Gates, PowerGrip® Imperial Timing Belt - 9277-50722

Imperial, Rubber, Timing belt, EAN code: 5412571245769

Brand	Gates
Mfr Part No.	255-H-100

$18.83

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

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	255-H-100

$24.03

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This item is not currently available from our stocks.

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PHG 225-L-100, SKF, Synchronous Imperial Timing Belt - PHG 225-L-100

Imperial, Rubber, Timing belt, EAN code: 07316572594728

Brand	SKF
Mfr Part No.	PHG 225-L-100

$7.95

Despatched in 3-5 days

225-L-100, Gates, PowerGrip® Imperial Timing Belt - 9257-33022

Imperial, Rubber, Timing belt, EAN code: 5412571224894

Brand	Gates
Mfr Part No.	225-L-100

$16.18

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225-L-100, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	225-L-100

$19.70

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This item is not currently available from our stocks.

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

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	300-H-100

$27.11

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300-H-100, Protorque, Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Protorque
Mfr Part No.	300-H-100

$15.54

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PHG 300-L-100, SKF, Synchronous Imperial Timing Belt - PHG 300-L-100

Imperial, Rubber, Timing belt, EAN code: 07316572594872

Brand	SKF
Mfr Part No.	PHG 300-L-100

$10.65

Despatched in 3-5 days

300-L-100, Gates, PowerGrip® Imperial Timing Belt - 9257-33030

Imperial, Rubber, Timing belt, EAN code: 5412571224948

Brand	Gates
Mfr Part No.	300-L-100

$19.43

In stock ( * cut from sleeve )

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

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	335-H-100

$29.70

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This item is not currently available from our stocks.

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

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	330-H-100

$29.05

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This item is not currently available from our stocks.

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PHG 322-L-100, SKF, Synchronous Imperial Timing Belt - PHG 322-L-100

Imperial, Rubber, Timing belt, EAN code: 07316572594919

Brand	SKF
Mfr Part No.	PHG 322-L-100

$11.37

Despatched in 3-5 days

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

Imperial, Rubber, Timing belt, EAN code: 4051817004763

Brand	ContiTech
Mfr Part No.	322-L-100

$14.32

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This item is not currently available from our stocks.

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322-L-100, Gates, PowerGrip® Imperial Timing Belt - 9257-33032

Imperial, Rubber, Timing belt, EAN code: 5412571224955

Brand	Gates
Mfr Part No.	322-L-100

$19.99

In stock ( * cut from sleeve )

322-L-100, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	322-L-100

$25.07

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This item is not currently available from our stocks.

Despatch date information is on request.

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285-L-100, Gates, PowerGrip® Imperial Timing Belt - 9257-33028

Imperial, Rubber, Timing belt, EAN code: 5412571224931

Brand	Gates
Mfr Part No.	285-L-100

$18.86

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285-L-100, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	285-L-100

$22.89

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This item is not currently available from our stocks.

Despatch date information is on request.

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202-L-100, Gates, PowerGrip® Imperial Timing Belt - 9277-50100

Imperial, Rubber, Timing belt, EAN code: 5412571242232

Brand	Gates
Mfr Part No.	202-L-100

$15.61

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This item is not currently available from our stocks.

Despatch date information is on request.

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

Imperial, Rubber, Timing belt, EAN code: 4051817004718

Brand	ContiTech
Mfr Part No.	244-L-100

$11.97

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This item is not currently available from our stocks.

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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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