Batch CAD Cart (0)
  • Cart is empty

RunRight® tensioner devices offer a full range of belt and chain tensioning options. They are manufactured 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.

RunRight RT N tensioners are manufactured with galvanized powder metal parts and are designed for outdoor or oily applications. The Tensys 20 neoprene inserts are oil resistant and can be used for applications operating within a -22° to 195°F (-30° to 90°C) temperature range.

RunRight RT H tensioners enable a reduction of tensioning force of up to 40% when compared to the RT and RT N tensioners. The Tensys 40 heat resistant rubber inserts are ideal for applications operating within a 180° to 250°F (80° to 120°C) temperature range.

RunRight RT R tensioners are for use on internal combustion engines and compressors. They are manufactured with powder metal or cast iron housings, fully welded steel 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.

The RT 11 to RT 27 housings are manufactured from powder metal,

more
Unit of Measure

Specifications

Description 

RT-45-TENSNR IN

Type

Chain/Belt Tensioner

Element Material

Natural Rubber

Style

Elastomeric

Color

Black

Dimensional Data

Tensioner

RT45

Mounting Bolt Size

M20 x 50

Outside Diameter (Dim D)

4.53 in

Overall Length (Dim E)

7.87 in115 mm

Idler Bolt Size

3/4 - 10 x 6

Dimension L

10.24 in260 mm

Dimension J-1

8.86 in225 mm

Dimension J-2

7.09 in180 mm

Dimension M

50 mm

Dimension G

0.47 in12 mm

Dimension O

0.71 in18 mm

Dimension P

0.49 in12.5 mm

Dimension K

2.76 in70 mm

Cubic inches

365.06726 in³

Performance Data

Normal Temperature Range

-40 to 180 ºF-40 to 80 ºC

Mounting Bolt Torque

410 N·m3629 in·lb

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

292.5 lb1300 N

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

3.1 in78 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.