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| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £29.94 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £29.94 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | FREE | 2 to 3 working days |
| Next Day | £17.95 |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £29.94 | 5 to 7 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £20.34 | 7 to 10 working days |
Product Number: 24709
Accurate belt tension measurement is critical when fitting or adjusting drive belts, as incorrect tension leads to premature wear or belt failure. The Draper 24709 Sonic Belt Tension Tester addresses this by using a built-in microphone to detect belt vibration and convert it into a precise tension reading, making it suitable for all types of drive belts including camshaft and auxiliary belts. The tester is supplied with a flexible probe that is well suited to accessing belts in restricted engine bays where rigid tooling would be impractical. The probe measures 115mm in length, with a tester probe length of 42mm, and the unit itself measures 165 x 65 x 30mm and weighs 242g — compact enough for professional workshop and mobile use alike. The device covers a frequency range of 10–600Hz and stores up to 20 readings in its internal memory, allowing the technician to record and compare measurements during installation or adjustment. An automatic power-off function activates after five minutes of inactivity to conserve battery life. Power is supplied by two AAA batteries, which are available separately. Supplied as a single sonic belt tension tester, this instrument is suited to professional technicians and workshop engineers requiring repeatable, instrument-based tension verification rather than relying on deflection estimates.
About PartsForMachines:PartsForMachines is a premier e-commerce platform, founded in 2019 in Warwickshire, UK, specialising in aftermarket parts and services for construction, agriculture, and industrial machinery. We offer an extensive catalogue of over 500,000 products. Standard delivery: 1-3 working days within UK mainland. We are proud to be an authorised distributor, giving customers extra confidence when purchasing genuine products from us. In addition, we provide a 30-day return policy for eligible items.
| Engine Parts | Product Number | Product Name | Recommended Units | Product Price |
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24709ins.pdf
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Standard Delivery: UK Mainland Free
Next Day Delivery Available
Delivery Estimate: 2 to 3 working days
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| Technical Specification | |||||
|---|---|---|---|---|---|
| PRODUCT NUMBER | 28630 | 12434 | 12435 | 16322 | 16330 |
| Type | Tension Testers | Spare Part | Spare Part | Extension Bars | Extension Bars |
| Size | 80mm | 155mm | |||
A. The tester is designed to check the tension on all types of drive belts, including camshaft and auxiliary belts.
A. The device uses a built-in microphone to detect belt vibration. It converts the vibration level into a tension reading, making it suitable for use when installing a new belt or making tension adjustments.
A. The tester operates across a frequency range of 10–600Hz.
A. Yes. The device features 20 internal memory data storage slots, allowing multiple readings to be recorded and reviewed during a job.
A. The probe length is 115mm with a tester probe length of 42mm. The unit itself measures 165 x 65 x 30mm and weighs 242g.
A. The tester requires two AAA batteries, which are not supplied and must be purchased separately. The device automatically powers off after five minutes of inactivity to help conserve the battery.
A. Next-day delivery is available on most products and will appear as an option at checkout where eligible.
A. In-stock orders placed before 14:30 Monday to Friday are usually dispatched the same day.
A. We accept returns within 30 days of purchase for items that are unused, undamaged, and in their original packaging. Returns are available only for UK-delivered orders and must include proof of purchase. Before returning an item, please contact us at [email protected] to obtain a Return Merchandise Number (RMN). You may also be asked to share images of the product and its packaging for verification. Items that do not meet these conditions will not be accepted for return. If your return is approved, we will initiate a refund to your credit card or original method of payment. A restocking fee of up to 15% of the order value may apply to each returned item.
A. WhatsApp us on 07754 288583 with photos of the item and packaging, and we'll resolve the issue in line with our returns policy.
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