DIAMOND CUT

In cooperation with the University of Paderborn Germany, ESJOT Antriebstechnik GmbH has developed a new process to cut the teeth of chain driven sprockets.

DIAMOND-CUT is an innovative manufacturing process resulting in a visibly higher sprocket quality than was ever possible on standard milled sprockets. Special tooling guarantees a super accurate cutting surface. At the same time the material is highly condensed in the area of the teeth flanges, so that in many cases additional heat treatment is no longer necessary. All sprockets are made from the best German steel to obtain a continued high quality product.

Steel

ESJOT produces sprockets using only german steel that meets or exceeds highest OEM requirements. The high tensile strength of this material guarantees extreme long life.

Front Sprockets

Highest quality steel 16 MnCR5 of OEM quality is precision cut on CNC machines. Cutting the teeth with our “DIAMOND CUT” process and case hardening of 700 HV40 (case depth of 0.4 mm) meets the highest quality requirements.

Modern milling machines guarantee a perfect fit on the drive shaft with tolerances of overall diameter and wobble remaining under 0.1 mm.

Rear Sprockets

Center holes are precisely cut on CNC machines with extremely low tolerances. Only special steel qualities “Qste 420” and “Qste 460” are used. Mounting holes are countersunk and cleaned. Teeth are cut with our new special procedure “DIAMOND CUT” with tolerances of overall diameter and wobble of below 0.1 mm guarantee super smooth running.

Features:

• 25 % higher degrees of hardness in the teeth flanges
• 50 % better surface smoothness and therefore particularly quiet
• optimized tooth contour for a longer service life
• Rear Sprockets with tolerances of overall diameter and wobble of below 0.1 mm
• Front Sprockets with tolerances of overall diameter and wobble of below 0.1 mm

Catalogue:

The official Esjot online catalogue, will help you to double check which part number is the right for your motorcycle and also which is the oem teeth number.

Please note that moving from a different Sprocket Teeth could require a different chain size.

• Increasing the Rear Sprocket teeth or Decreasing the Front Sprocket teeth is equivalent to having more acceleration, shorter gears, lower speed in each gear, therefore more frequent gear change, is the choice of those who wants sport driving.
  Usually the required modification is 2 rear sprocket teeth more than the original. In this case the chain length is + 2 links.
• Decreasing the Rear Sprocket teeth or Increasing the Front Sprocket teeth is equivalent to having less acceleration, longer gears, more final speed, it is the choice of those who use the bike for long motorway trips or if the stock bike final drive is too short. Usually the required modification is 1 rear sprocket tooth less than stock, or 1 front sprocket tooth more than stock. In this case the chain length remains unchanged.