ANSI Heavy Duty Roller Chain

ANSI Heavy Duty Roller Chain

The superior performance of Tsubaki Heavy Duty chains is the result of a comprehensive quality control network that begins with selection of the world's finest steel materials. It continues with inspection and analysis of quality and performance in 20 different work areas. At Tsubaki quality control is not just a one time check; it is a total dedication. It is your assurance of long lasting and dependable performance.


Tsubaki offers Heavy Duty chains for applications that exceed the capabilities of Tsubaki ANSI G7 standard roller chain. Heavy Duty chain should be considered in the following situations:

H Series
H Series chain differs only from the ANSI G7 Series chain in the thickness of the link plates. The link plates have the same thickness as the link plates of the next larger pitch size in ANSI G7 Series. The increased thickness of the link plates provides a 10% greater capacity for absorbing shock loads. In short, H Series chains are especially suitable for situations where the load is heavy and operating speed is low (up to 50 m/min) or where operating conditions are severe.

HT Series
HT Series chain provides a (10% to 20%) higher Tensile Strength than ANSI G7 Series chain by using through-hardened pins and link plates of the next larger pitch size in ANSI G7 series. HT Series chain also provides a higher shock load resistance and is best suited for low operating speeds - up to 50 m/min Dimensions of the chain are identical to the H Series chain.

SUPER Series
The dimensions of these series are identical to those of ANSI G7 Series chain. The special design of the SUPER Series link plate delivers exceptional performance. The pitch holes are critically formed and ball drifted and the pins are through-hardened for greater shock resistance (25% to 30%). SUPER Series chains offer 10% higher tensile strength than the equivalent size ANSI G7 Series chain. SUPER Series chains can be used to replace the next larger pitch size of ANSI G7 Series, making them ideal for applications where chain space is limited. Best suited for low speed operating conditions - up to 50 m/min.

SUPER-H Series
The thickness of the SUPER-H Series link plates is the same as the next larger pitch size of SUPER Series chain. The pins are also through-hardened which provides a higher tensile strength and a higher shock load resistance than SUPER Series chain. The pitch holes are critically formed and ball drifted. SUPER-H Series chains can be used to replace the next larger size of ANSI standard chain, making them ideal for applications where space is limited. Best suited for low speed operating conditions - up to 50 m/min.

ULTRA SUPER Series
ULTRA SUPER Series offer longer wear life, greater shock load resistance (170%) and higher tensile strength (150%) than any other Tsubaki roller chain. The pins are through-hardened and the pin holes are critically formed and ball drifted. The diameter of the pins has been increased. This chain is well suited for applications where there are space limitations. The heavy duty construction of the ULTRA SUPER Series chain allows it to replace chains up to two pitch sizes larger ANSI G7 Series chain. It is best suited for low speed operating conditions up to 50 m/min.

Comparison of Tensile Strength versus Shock Load Resistance

For more detailed information about the H Series click here

For more detailed information about the HT Series click here

For more detailed information about the Super Series click here

For more detailed information about the Super-H Series click here

For more detailed information about the Ultra Super Series click here