BX39-1/2 / 1003 Dunlop Cogged V-Belt
- 17mm wide
- 11mm deep
- 1003mm inside length
BX39-1/2 / 1003 Dunlop Cogged V-Belt is backordered and will ship as soon as it is back in stock.
Measuring Your Belt
Measuring Your Belt
Check the markings first. Most belts have their size printed on the back, for example A24, SPZ1000 or 8PK1200. Type that code into the search bar to find the exact match.
Markings worn off? Measure across the top of the belt for the width, and its depth. For the length, wrap a piece of string round the belt, mark where it meets, then lay the string flat and measure it.
Timing or ribbed belt? Count the teeth or ribs, and measure the gap between them.
Full step-by-step guide: How to measure your belt →
Still not sure? Call 020 8138 2848 and we’ll identify it for you.
Delivery and Shipping
Delivery and Shipping
We ship across the UK and worldwide. Choose an economical service if you can wait a few days, or express if the machine is stood still until the belt arrives. Delivery costs are worked out at checkout based on the weight of your order and where it's going. More Shipping Information
BX39-1/2 / 1003 Dunlop Cogged V-Belt
The Dunlop BX39-1/2 is a BX section cogged raw-edge V-belt, 17mm wide with a 39.5″ (1003mm) inside length. It fits the same pulleys as a classical B section belt, and is a good-value replacement for motors, pumps, fans, compressors and agricultural machinery.
Dunlop cogged belts have raw-edge sides and moulded cogs on the underside. The cogs make them more flexible than a wrapped belt, so they run on smaller pulleys and stay cooler, and the raw edges grip well even at lower tension, which saves energy. They resist heat and oil, and are antistatic to ISO 1813.
Specification
| Brand and range | Dunlop raw edge cogged |
|---|---|
| Section | BX (fits B section pulleys) |
| Top width | 17mm |
| Height | 11mm |
| Inside length (Li) | 1003mm (39.5″) |
| Construction | Raw edge, moulded cogs, antistatic (ISO 1813) |
Check it’s the right belt
- The old belt should be marked BX39-1/2. The letters are the section and the number is the inside length in inches. Measure 17mm across the top and 11mm deep.
- If the markings have worn off, wrap a piece of string round the inside of the belt, mark it and measure the string. It should come to about 1003mm.
- A Dunlop BX39-1/2 can replace a wrapped B39-1/2 belt of the same length. On multi-belt drives, change the whole set.
- If your belt isn’t 17mm wide, see our AX and CX cogged belts.
Not quite the right length? The nearest sizes are BX39 and BX40, or see all BX cogged belts. Not sure? Call 020 8138 2848 and we’ll help you find the right belt.
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Section
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Range
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Construction
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Top width (mm)
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Height (mm)
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Inside length (mm)
Payment & Security
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