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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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541-560 of 2878 products

541-560 of 2878 products

1200-XXH-400, Gates, PowerGrip® Imperial Timing Belt - 9257-05304

Imperial, Rubber, Timing belt, EAN code: 5412571223835

Brand	Gates
Mfr Part No.	1200-XXH-400

$719.15

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1200-XXH-400, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	1200-XXH-400

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2 alternatives

1200-XXH-500, ContiTech, CONTI® SYNCHROBELT Imperial Timing Belt

Imperial, Rubber, Timing belt, EAN code: 4051817011754

Brand	ContiTech
Mfr Part No.	1200-XXH-500

$967.87

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1200-XXH-500, Gates, PowerGrip® Imperial Timing Belt - 9257-05404

Imperial, Rubber, Timing belt, EAN code: 5412571223873

Brand	Gates
Mfr Part No.	1200-XXH-500

$898.95

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1200-XXH-500, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	1200-XXH-500

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120-XL-025, Gates, PowerGrip® Imperial Timing Belt - 9257-21012

Imperial, Rubber, Timing belt, EAN code: 5412571224092

Brand	Gates
Mfr Part No.	120-XL-025

$2.55

In stock ( * cut from sleeve )

120-XL-025, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	120-XL-025

$3.52

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120-XL-031, Gates, PowerGrip® Imperial Timing Belt - 9277-52117

Imperial, Rubber, Timing belt, EAN code: 5412571253351

Brand	Gates
Mfr Part No.	120-XL-031

$3.18

In stock ( * cut from sleeve )

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

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	120-XL-031

$4.11

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120-XL-037, Gates, PowerGrip® Imperial Timing Belt - 9257-22012

Imperial, Rubber, Timing belt, EAN code: 5412571224306

Brand	Gates
Mfr Part No.	120-XL-037

$3.82

In stock ( * cut from sleeve )

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

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	120-XL-037

$4.68

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1224-MXL-012, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	1224-MXL-012

$3.08

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1224-MXL-019, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	1224-MXL-019

$3.19

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1224-MXL-025, Optibelt, ZR Imperial Timing Belt

Imperial, Rubber, Timing belt

Brand	Optibelt
Mfr Part No.	1224-MXL-025

$3.42

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122-XL-025, Gates, PowerGrip® Imperial Timing Belt - 9277-53950

Imperial, Rubber, Timing belt, EAN code: 5412571263084

Brand	Gates
Mfr Part No.	122-XL-025

$2.55

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122-XL-031, Gates, PowerGrip® Imperial Timing Belt - 9277-53951

Imperial, Rubber, Timing belt, EAN code: 5412571263091

Brand	Gates
Mfr Part No.	122-XL-031

$3.18

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122-XL-037, Gates, PowerGrip® Imperial Timing Belt - 9277-52167

Imperial, Rubber, Timing belt, EAN code: 5412571253603

Brand	Gates
Mfr Part No.	122-XL-037

$3.85

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1240-MXL-012, Gates, PowerGrip® Imperial Timing Belt - 9277-53931

Imperial, Rubber, Timing belt, EAN code: 5412571262896

Brand	Gates
Mfr Part No.	1240-MXL-012

$2.07

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1240-MXL-019, Gates, PowerGrip® Imperial Timing Belt - 9277-53932

Imperial, Rubber, Timing belt, EAN code: 5412571262902

Brand	Gates
Mfr Part No.	1240-MXL-019

$3.27

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1240-MXL-025, Gates, PowerGrip® Imperial Timing Belt - 9277-53933

Imperial, Rubber, Timing belt, EAN code: 5412571262919

Brand	Gates
Mfr Part No.	1240-MXL-025

$4.30

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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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