What are the exact dimensions of this V-belt?

The belt features an SPA profile with a top width of 12.7 mm, a height of 10 mm, and a datum length Ld of 857 mm (outer length La of 874 mm).

Which pulleys is this V-belt compatible with?

This belt is designed for use on standard industrial pulleys matching the SPA profile.

What material is used for the internal tension cord?

The internal tension cords of this Conti V-belt are made of polyester (PE) to provide stable power transmission and minimal stretching.

What is the difference between datum length Ld and outside length La?

The datum length Ld (857 mm) is the reference working length used for drive calculation, while the outside length La (874 mm) is the total exterior circumference.

CONTI SPA857 CONTI V belt SPA 857

Name: CONTI SPA857 CONTI V belt SPA 857
Brand: CONTI
SKU: 05010142
Price: 27.94 EUR
Availability: InStock

Supplier number: CONTI SPA857 | EAN 4010858720889

27.94 tax incl.

€23.09 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 6 products in stock.

Ordered before 20:00 - delivered as of 13/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL

✆ Talk to a specialist

Reliable power transmission for demanding drives

Practical benefits

Efficient torque and power: You transfer power smoothly across pulleys thanks to the standardized 12.7 mm SPA profile.
Minimal stretch under load: The integrated PE tension member limits elongation so you maintain consistent tension with minimal maintenance.
Durable wrapped belt design: A sturdy outer fabric jacket protects against dust, wear, and mechanical friction in industrial machinery.

In a nutshell

The right choise for

With the Conti Conti-V spa 857 V-belt, you ensure dependable and efficient power transmission across mechanical drive systems. Featuring an spa profile with a 12.7 mm width, a 10 mm height, and an 857 mm datum length Ld, this narrow wrapped belt eliminates power loss and slippage on compatible pulleys. The built-in pe tension cord provides high dimensional stability and minimal stretch under load, keeping electric motors, pumps, fans, and compressors running smoothly with less maintenance. Its durable fabric jacket protects against dust and friction, ensuring your industrial and agricultural equipment operates reliably in demanding environments.

Product information FAQ

€27.94

In stock - tax incl.

Key features according to our expert

Length: 857
Width: 12,7 mm
Height: 10 mm
Profile (V-belt): SPA
Reference length Ld: 857 mm
Inner length (Li): 811 mm; 31,929 inch
Outer length (La): 874 mm
Material (cord): PE
Product line: CONTI V
Colour (manufacturer): Black

Product description:

Wrapped V-belts for demanding drives in all sectors of machine engineering to DIN 2215 or DIN 7753

Properties:

Temperature range from -55 °C to +70 °C
Matched-set L=L (from 1000 mm)
Electrically conductive to ISO 1813
Conditionally resistant to oil
Suitable for tropical climates
Dust-proof

All Features

Length: 857
Width: 12,7 mm
Height: 10 mm
Profile (v-belt): SPA
Reference length ld: 857 mm
Inner length (li): 811 mm; 31,929 inch
Outer length (la): 874 mm
Material (cord): PE
Product line: CONTI V
Colour (manufacturer): Black

Brand CONTI
05010142
EAN 4010858720889
Supplier number CONTI SPA857

Frequently asked questions about this product

Answered by specialists

What are the exact dimensions of this V-belt?: The belt features an SPA profile with a top width of 12.7 mm, a height of 10 mm, and a datum length Ld of 857 mm (outer length La of 874 mm).
Which pulleys is this V-belt compatible with?: This belt is designed for use on standard industrial pulleys matching the SPA profile.
What material is used for the internal tension cord?: The internal tension cords of this Conti V-belt are made of polyester (PE) to provide stable power transmission and minimal stretching.
What is the difference between datum length Ld and outside length La?: The datum length Ld (857 mm) is the reference working length used for drive calculation, while the outside length La (874 mm) is the total exterior circumference.