Engineered for Performance.
Suitable for low‑power power transmission
Used for high‑speed transmission with short center distance
Low thermal effect and low stretch effect
Internal Structure.
Detailed breakdown of the reinforcement layers and materials used. Designed for maximum durability and efficiency in every rotation.

Also written: K23 · K 23 · 3L310 · 3L 310
Belt Labeling.
SQUAREROPE® light horse power triangular belts' product number labeling includes type and length: 1) Belt type: K, M, 3L, 4L represent four different cross-sectional shapes and sizes respectively 2) Belt length: indicated by numbers representing the outside circumference; K/M lengths are in inches and 3L/4L in tenths of an inch.
Belt Specifications
SQUAREROPE® Light Duty & Fractional H.P. V-belts are manufactured according to the international standards DIN 2215 and ISO 4184. These standards define a wedge angle of 40° and a ratio of belt top width (bo) to belt height (h) of about 1.6.
Cross Section | Belt Top Width bo(mm) | Belt Thickness h(mm) | Groove Width bd(mm) | Length Range Ld(mm) | Min Pulley Dia ddmin(mm) | Quote |
|---|---|---|---|---|---|---|
| K | 8 | 5 | 6.7 | 483-1143 | 40 | K |
| M | 10 | 6 | 8.5 | 381-1524 | 45 | M |
| 3L | 10 | 5.5 | 8.5 | 381-1524 | 45 | 3L |
| 4L | 13 | 8 | 11 | 508-2413 | 60 | 4L |
Hover over the table to verify dimensions.
No catalog available for this product.
Frequently Asked Questions
They use the same structure, materials and production methods as classic V-belts, with a similar top-width-to-height ratio of about 1.6, but in the smaller K, M, 3L and 4L sections. They are built for fractional-horsepower drives that run at high speed over short center distances, with minimal heat build-up and stretch.
Belt Specifications
SQUAREROPE® Light Duty & Fractional H.P. V-belts are manufactured according to the international standards DIN 2215 and ISO 4184. These standards define a wedge angle of 40° and a ratio of belt top width (bo) to belt height (h) of about 1.6.
Cross Section | Belt Top Width bo(mm) | Belt Thickness h(mm) | Groove Width bd(mm) | Length Range Ld(mm) | Min Pulley Dia ddmin(mm) | Quote |
|---|---|---|---|---|---|---|
| K | 8 | 5 | 6.7 | 483-1143 | 40 | K |
| M | 10 | 6 | 8.5 | 381-1524 | 45 | M |
| 3L | 10 | 5.5 | 8.5 | 381-1524 | 45 | 3L |
| 4L | 13 | 8 | 11 | 508-2413 | 60 | 4L |
Hover over the table to verify dimensions.
No catalog available for this product.
Frequently Asked Questions
They use the same structure, materials and production methods as classic V-belts, with a similar top-width-to-height ratio of about 1.6, but in the smaller K, M, 3L and 4L sections. They are built for fractional-horsepower drives that run at high speed over short center distances, with minimal heat build-up and stretch.
Need help specifying Light-Duty Belt?
Share your operating conditions, dimensions, and quantity. Our team will help confirm the right belt construction.
