3D CAD and 2D Drawings

Find and download 3D CAD and 2D drawings for key Timken products.

Batch CAD Cart (0)
  • Cart is empty

RunRight® RT F tensioners are designed for front mounting applications where access to back side or rear mounting surfaces is not possible. A single threaded hole is required to mount these tensioners. These tensioners include a special mounting screw and spacer bushing. They are manufactured with powder metal or cast iron housings, cast iron arms and inner square, 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





N/A Chain/Belt Tensioner

Element Material

N/A Natural Rubber


N/A Elastomeric


N/A Black

UPC Number

N/A 53277

Dimensional Data


N/A RT F27

Mounting Bolt Size

N/A M10

Outside Diameter (Dim D)

N/A 3.07 in78 mm

Overall Length (Dim E)

N/A 4.25 in108 mm

Idler Bolt Size

N/A 1/2 - 13 x 3-1/2

Dimension L

N/A 6.1 in155 mm

Dimension J-1

N/A 5.12 in130 mm

Dimension J-2

N/A 3.94 in100 mm

Dimension M

N/A 0.67 in17 mm

Dimension R

N/A 0.59 in15 mm

Dimension G

N/A 0.31 in8 mm

Dimension O

N/A 0.59 in15 mm

Dimension P

N/A 0.41 in10.5 mm

Dimension K

N/A 1.97 in50 mm

Cubic inches

N/A 79.58975 in³

Performance Data

Normal Temperature Range

N/A -40 to 180 ºF-40 to 80 ºC

Force at 20° Angle of Pretension (Normal Force Level) (Dimension F)

N/A 85.4 lb380 N

Distance at 20° Angle of Pretension (Normal Force Level) (Dimension S)

N/A 1.7 in44 mm



  • 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.
  • Inch (imperial) standard tensioner units all come with both the mounting screw and a zinc-plated idler bolt with nuts.
By clicking Submit, you consent to the personal information you provide being accessible by Timken personnel, who may be located outside your home country, as described in our Privacy Notice.