What are the dimensions of this V-belt?

This belt has an SPA profile with a top width of 12.7 mm, a height of 10 mm, a datum length Ld of 1257 mm, and an outside length La of 1274 mm.

What does the L=L designation mean on this belt?

L=L indicates matched-set manufacturing. You can install multiple belts together on a multi-groove drive without pre-sorting them for length tolerance.

Which pulleys is this V-belt suitable for?

This belt is designed for standardized SPA profile V-belt pulleys according to ISO 4184 and DIN 7753.

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

The datum length (Ld 1257 mm) is the effective pitch length on the pulley. The outside length (La 1274 mm) is measured along the outer surface of the belt.

What material is used for the internal tension cord?

The tension cord of this Conti belt is made of polyester (PE) to ensure high tensile strength and minimal elongation.

CONTI SPA1257 CONTI V belt SPA 1257

Name: CONTI SPA1257 CONTI V belt SPA 1257
Brand: CONTI
SKU: 05010169
Price: 41.31 EUR
Availability: InStock

Supplier number: CONTI SPA1257 | EAN 4010858721282

41.31 tax incl.

€34.14 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 5 products in stock.

Ordered before 20:00 - delivered tomorrow 16/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL
Delivered from Belgium

✆ Talk to a specialist

Dependable drive performance with the SPA 1257 V-belt

Practical benefits

Efficient power transmission profile: The accurate SPA cross section with 12.7 mm width ensures optimal grip and delivers slip-free drive performance for your equipment.
Low stretch polyester core: The integrated PE tension cord preserves belt length under heavy loads, reducing your need for frequent retensioning.
Smooth and durable operation: Built with a 1257 mm datum length, it runs smoothly in matched drives to protect your machinery from uneven wear.

In a nutshell

The right choise for

With the Conti Conti-V spa 1257 V-belt, you restore dependable and slip-free power transmission across your industrial machinery, electric motors, and ventilation systems. Its precision-engineered spa profile, measuring 12.7 mm in width and 10 mm in height, ensures proper seating in standardized pulleys matching iso 4184 and din 7753. The integrated polyester tension cord preserves the 1257 mm datum length under heavy loads, preventing unwanted elongation and reducing retensioning needs. Thanks to matched-set L=L manufacturing, you can install multiple belts directly onto multi-groove drives without pre-sorting. This minimizes equipment downtime and guarantees smooth, continuous operation.

Product information FAQ

€41.31

In stock - tax incl.

Key features according to our expert

Length: 1257
Width: 12,7 mm
Height: 10 mm
Profile (V-belt): SPA
Reference length Ld: 1257 mm
Inner length (Li): 1211 mm; 47,677 inch
Outer length (La): 1274 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: 1257
Width: 12,7 mm
Height: 10 mm
Profile (v-belt): SPA
Reference length ld: 1257 mm
Inner length (li): 1211 mm; 47,677 inch
Outer length (la): 1274 mm
Material (cord): PE
Product line: CONTI V
Colour (manufacturer): Black

Brand CONTI
05010169
EAN 4010858721282
Supplier number CONTI SPA1257

Frequently asked questions about this product

Answered by specialists

What are the dimensions of this V-belt?: This belt has an SPA profile with a top width of 12.7 mm, a height of 10 mm, a datum length Ld of 1257 mm, and an outside length La of 1274 mm.
What does the L=L designation mean on this belt?: L=L indicates matched-set manufacturing. You can install multiple belts together on a multi-groove drive without pre-sorting them for length tolerance.
Which pulleys is this V-belt suitable for?: This belt is designed for standardized SPA profile V-belt pulleys according to ISO 4184 and DIN 7753.
What is the difference between datum length Ld and outside length La?: The datum length (Ld 1257 mm) is the effective pitch length on the pulley. The outside length (La 1274 mm) is measured along the outer surface of the belt.
What material is used for the internal tension cord?: The tension cord of this Conti belt is made of polyester (PE) to ensure high tensile strength and minimal elongation.