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RunRight® RT B tensioners are designed for longer length chain drive applications. They are manufactured with powder metal or cast iron housings, cast iron arms and inner squares, come with the standard Tensys™ 10 rubber inserts, and can be used for applications operating within a -40° to 180°F (-40° to 80°C) temperature range.

Unit of Measure

Specifications

Description 

 N/A RT-B-27-TENSNR MM

Series

 N/A RT B

Type

 N/A Chain/Belt Tensioner

Element Material

 N/A Natural Rubber

Application

 N/A Belt/Chain Tensioner

Contents

 N/A One Complete Unit

Tensioner Size

 N/A RT B27

Dimensional Data

Mounting Bolt Size (Dimension H)

 N/A M12

Max. Distance (Dimension S)

 N/A 2.560 in

Dimension D

 N/A 78 mm3.07 in

Dimension E

 N/A 108 mm4.250 in

Dimension G

 N/A 8 mm0.310 in

Dimension J1

 N/A 130 mm5.120 in

Dimension J2

 N/A 100 mm3.940 in

Dimension K

 N/A 50 mm1.970 in

Dimension L

 N/A 155 mm6.100 in

Dimension M

 N/A 40 mm1.570 in

Dimension O

 N/A 52 mm2.050 in

Dimension P

 N/A 10.5 mm0.41 in

Dimension T

 N/A 12.5 mm0.49 in

Notes

Notes 

 N/A
  • The recommended angle of pretension is 20°. This provides the tensioner a maximum capability to absorb vibrations and shock loads, while also maintaining a range of motion to address the system’s belt or chain stretch.
  • Mounting accessories into the “Hard” Position results in approximately 25% higher tensioning force over the “normal” position.
  • Metric standard tensioner units all come with a mounting screw, but do not come with the sprocket idler bolt (which is supplied instead with RunRight metric idler sprockets).