Engineered for precision synchronization
Timing Belts (Imperial)
Corsair SARL is a leading supplier of high-quality industrial power transmission components, including premium Dunlop single-sided and double-sided imperial timing belts. Engineered for precision synchronization, high positioning accuracy, and optimal machinery reliability, these synchronous drive belts enable maintenance managers, design engineers, and technical procurement specialists to optimize equipment performance. This technical specification page acts as a comprehensive reference manual for selecting exact replacements. Contact us today to receive a definitive price quote.
Timing Belts (Imperial)
Corsair SARL is a leading supplier of high-quality industrial power transmission components, including premium Dunlop single-sided and double-sided imperial timing belts. Engineered for precision synchronization, high positioning accuracy, and optimal machinery reliability, these synchronous drive belts enable maintenance managers, design engineers, and technical procurement specialists to optimize equipment performance. This technical specification page acts as a comprehensive reference manual for selecting exact replacements. Contact us today to receive a definitive price quote.
Timing Belts (Imperial)
Corsair SARL is a leading supplier of high-quality industrial power transmission components, including premium Dunlop single-sided and double-sided imperial timing belts. Engineered for precision synchronization, high positioning accuracy, and optimal machinery reliability, these synchronous drive belts enable maintenance managers, design engineers, and technical procurement specialists to optimize equipment performance. This technical specification page acts as a comprehensive reference manual for selecting exact replacements. Contact us today to receive a definitive price quote.
Contents
Applications and Use
Dunlop imperial synchronous timing belts are deployed extensively across modern light, medium, and heavy-duty industrial drive applications. Due to their exact trapezoidal pitch geometry and positive meshing characteristics, these timing belts run reliably in automated machinery setups where precise timing is critical and zero slip can be tolerated. Typical installations include:
When coordinating routine machinery repairs, design retrofits, or direct component swaps, it is vital to maintain profile family matching. The cross-sectional sizes, specifically MXL, XL, L, H, and XH pitches, feature unique tooth spacings and profile heights that are completely non-interchangeable. Mounting a belt into an incorrect pulley sheave groove profile prevents proper meshing, forces tooth jumping, accelerates fabric shearing, and causes immediate dynamic system failure.
Precision manufacturing machinery, automated assembly systems, and pick-and-place lines.
Industrial printing machines, paper handling mechanisms, and textile looms.
Material handling systems, processing conveyors, and packaging lines.
Downloads
The official manufacturer product documentation is available for corporate procurement and design engineering review.
Key specifications are also summarised on this page.
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Call for availability and a quote
Phone: +41 32 737 70 60
Email: sales@corsairsarl.com
Opening hours: Monday – Friday, 8:00 am – 5:00 pm
- 35,000+ items in stock
- Up to 21% B2B discount
- Same-day dispatch on stock items
- Fast Swiss delivery
Operational Advantages of the Dunlop V-Belts
Integrating Dunlop imperial synchronous belts into your mechanical drive layouts yields measurable engineering efficiencies and operating advantages:
- Precise structural engagement: The classical trapezoidal tooth profile ensures a highly accurate, positive engagement into corresponding pulley grooves.
- Shock load dampening: Premium polychloroprene rubber tooth compounds absorb operational vibrations and reduce resonance interferences.
- Minimal structural stretch: High-modulus continuous glass fibre internal tensile cords minimize elongation over their operational lifecycle.
- Wear-resistant tooth surfaces: A tough nylon fabric protective envelope shields the contact teeth faces against frictional abrasion.
- Dual-sided drive capability: Available in double-sided tooth layouts to facilitate reverse rotation synchronization from a single core.
Nomenclature and Identification
Industrial imperial timing belts use a standard alphanumeric designation system that isolates structural loop geometry, tooth pitch family, and nominal width. The notation string consists of three interconnected component blocks.
- Pitch Length Block: A three-digit or four-digit sequence that identifies the total nominal pitch length of the belt measured in inches, with the decimal point omitted (e.g., 900 identifies a 90.0 inch pitch length).
- Tooth Pitch Prefix: One or two letters that isolate the distinct tooth spacing class (MXL, XL, L, H, or XH).
- Width Parameter Block: A three-digit sequence that identifies the nominal belt width in inches, where the decimal point is multiplied by 100 (e.g., 200 designates a 2.00 inch wide belt).
How to Identify Your V-Belt
- Locate the outer brand mark: Wipe the top face fabric label clean to identify the printed Dunlop manufacturer notation text.
- Isolate the structural pitch type: Read the letters to identify your tooth spacing group (MXL, XL, L, H, or XH).
- Record the loop length code: Identify the leading digits to determine the nominal loop length in inches.
- Confirm the width dimension code: Read the final number block to establish the nominal belt width parameter.
- Count total tooth quantities: Verify the absolute tooth count to cross-reference dimensions against configuration tables (e.g., a belt marked 900H200 maps to a 90.0 inch length, H pitch, and 2.00 inch width).
Materials and Variants
Standard Raw-Edge Cogged Belts
The standard single-sided synchronous belt line utilises a precise trapezoidal tooth matrix formed from a durable polychloroprene base compound. The internal structure incorporates high-modulus continuous glass fibre cords to prevent stretching, while the entire tooth profile face is encased in a protective woven nylon fabric envelope to optimize structural wear life.
Specialised and Alternative Variants
Double-Sided Variant Configurations (DD)
For advanced multi-shaft reverse drives, specialised double-sided configurations featuring synchronous teeth on both sides of the belt casing are available (designated with the DD suffix, such as XL-DD, L-DD, and H-DD).
Specialised and Alternative Variants
Alternative Base Coatings
Not specified in the provided technical documentation for alternative backings or anti-static compound certifications. For specialized electrical resistance profiles or specific chemical exposure, contact our engineering support division.
How to Request a Quote
To enable our commercial branch to process a quick business proposal, gather these component factors prior to reaching out to our service line:
- Explicit Specification Code: Record the exact alphanumeric identifier found on the belt face (e.g., 900H200, 120XL025).
- Exact Drive Loop Count: Detail the direct item quantity required for your application machinery setup.
- Length Sizing Type: Confirm that your dimensional tracking matches imperial pitch length and tooth count counts.
- Machine Space Environment: State any routine presence of high temperature loops, machinery lubricating oil mist, or moisture.
- Delivery Site Address: Supply your target address coordinates and required delivery parameters within Switzerland.
Service Note: Corsair SARL stores comprehensive regional inventory allocations to support maintenance operations with same-day dispatch on stock items for fast Swiss delivery.
Technical Specifications and Dimensional Tables
The data tables below list measurements across select items within the Dunlop imperial synchronous belt line, tracking nominal width, tooth pitch family, profile height ($h_s$), tooth height ($h_t$), pitch ($P$), and absolute tooth counts. Physical weight indicators, raw material mass profiles, tensile breaking limits, and baseline kilowatt capacities are not specified in the provided documentation. For certified drive engineering support, route your configuration parameters to our support division.
Table coming soon
Good Practice, Storage, and Maintenance
To preserve your imperial synchronous drive profiles and ensure exact velocity tracking, implement standard industrial check steps:
- Pulley Cavity Inspections: Verify timing sheave tooth forms for micro-scoring, root pitting, or localized sidewall wear before new belt configuration setup. Worn profile surfaces shave away the outer nylon protective wrapping line.
- Precision Axis Alignment: Check parallel shaft layout boundaries and groove alignment tracks using precision mechanical tool systems. Parallel execution avoids structural tracking deflection and flange rub.
- Do Not Crimp Belts: Strictly avoid bending, rolling, or folding synchronous belts tightly during storage or component assembly handling. Crimping permanently breaks the interior high-modulus glass fibre tensile cords, triggering sudden structural shear breakage under normal running loads.
- Storage Environment Sizing: Store loose timing belt components in a dry, temperate, dust-free warehouse location. Keep segments clear of direct sunlight exposure, structural ozone concentrations, or lubricating chemical vapors to stop rubber oxidation.
Frequently Asked Questions (FAQ)
What material features give imperial timing belts their synchronization accuracy?
The precise trapezoidal tooth matrix meshes directly into mating sheave grooves, while internal high-modulus glass fibre structural cords resist tension stretching under continuous runtime load profiles.
Can I use an H pitch timing belt inside an L pitch pulley layout?
No. The H profile exhibits a tooth pitch spacing of 12.7 mm, whereas the L profile layout uses a 9.525 mm pitch standard. These pitch geometries are completely non-interchangeable; incorrect pairings prevent tooth seating.
How is the imperial coding format interpreted on a standard synchronous belt?
Sizing parameters integrate a specific three-part alphanumeric string. For example, code 900H200 identifies a loop featuring a 90.0 inch pitch length, H tooth pitch class, and a 2.00 inch width profile.
What are the thickness dimensions for the standard synchronous teeth profiles?
Total section height metrics track relative parameters: XL totals 2.4 mm, L totals 3.6 mm, H totals 4.4 mm, and the heavy XH design profile totals 11.4 mm.
Are double-sided configuration options supported in the imperial catalogue?
Yes. Double-sided layout variations are tracked under the designated DD suffix marker family, covering standard sub-groups such as XL-DD, L-DD, and H-DD synchronous lines.
Related Products
Call for availability and a quote
Phone
+41 32 737 70 60
Email
sales@corsairsarl.com
Opening hours
Monday – 8:00 am – 5:00 pm
Tuesday – 8:00 am – 5:00 pm
Wednesday – 8:00 am – 5:00 pm
Thursday – 8:00 am – 5:00 pm
Friday – 8:00 am – 5:00 pm
35,000+ items in stock
Up to 21% B2B discount
Same-day dispatch on stock items
Fast Swiss delivery