All Product Types > INDUSTRIAL MOTION PRODUCTS > RunRight® Rubber Suspension Parts Catalog > RunRight® Tensioner Devices > RunRight® Inch (Imperial) Tensioners - Type RT F (Front Mount) > Part Number 68514453277  

Part Number 68514453277, RunRight® Inch (Imperial) Tensioners - Type RT F (Front Mount)

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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.




Specifications  · Dimensional Data  · Performance Data  · Notes

Specifications

Description 
RT-F-27-TENSNR IN

Type
Chain/Belt Tensioner

Element Material
Natural Rubber

Style
Elastomeric

Color
Black


Dimensional Data

Tensioner
RT F27

Mounting Bolt Size
M10

Outside Diameter (Dim D)
3.07 in
78 mm

Overall Length (Dim E)
4.25 in
108 mm

Idler Bolt Size
1/2 - 13 x 3-1/2

Dimension L
6.1 in
155 mm

Dimension J-1
5.12 in
130 mm

Dimension J-2
3.94 in
100 mm

Dimension M
0.67 in
17 mm

Dimension R
0.59 in
15 mm

Dimension G
0.31 in
8 mm

Dimension O
0.59 in
15 mm

Dimension P
0.41 in
10.5 mm

Dimension K
1.97 in
50 mm

Cubic inches
79.58975 in³


Performance Data

Normal Temperature Range
-40 to 180 ºF
-40 to 80 ºC

Force at 20° Angle of Pretension (Normal Force Level) (Dimension F)
85.4 lb
380 N

Distance at 20° Angle of Pretension (Normal Force Level) (Dimension S)
1.7 in
44 mm


Notes

Notes 
  • 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.


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