S14M-3850-170 Optibelt STD Timing Belt
- S14M
- 275 teeth
- 3850mm pitch length
- 170mm wide
S14M-3850-170 Optibelt STD Timing 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
S14M-3850-170 Optibelt STD Timing Belt
The Optibelt STD S14M-3850-170 is an S14M timing belt with a 14mm pitch, a 3850mm pitch length, 275 teeth and a width of 170mm. It’s made by Optibelt, our premier brand.
STD timing belts have curvilinear, particularly shear-resistant teeth. The tooth geometry and belt structure spread the load evenly and give optimised engagement with STD (S-profile) pulleys.
Specification
| Brand and range | Optibelt STD |
|---|---|
| Profile | S14M |
| Tooth pitch | 14mm |
| Pitch length | 3850mm |
| Number of teeth | 275 |
| Width | 170mm |
| Fits pulleys | S14M (STD / STPD) |
Check it’s the right belt
- The old belt should be marked S14M-3850-170 (or 3850 S14M 170). 3850 is the pitch length in mm and 170 the width in mm.
- If the marking has worn off, count the teeth: this belt has 275. Multiply by 14mm to get the pitch length.
- S-profile (STD) belts have a different tooth shape from HTD (M) belts and need S-profile pulleys.
Not quite the right size? The nearest sizes in this width are S14M-3500-170 and S14M-4004-170. 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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Pitch / datum length (mm)
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Pitch (mm)
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Belt width (mm)
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Teeth
Payment & Security
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