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  • RunRight® RT (Imperial)
  • RunRight® RT Drawing (Imperial)

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, anything larger is manufactured out of cast iron. All arms and inner squares are cast iron. All of the tensioners include a zinc plated mounting screw and locking washer.

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Part Number

Description 

Mounting Bolt Size

Outside Diameter (Dim D)

Overall Length (Dim E)

Idler Bolt Size

Dimension L

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

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

CAD

N/A RT-11-TENSNR IN N/A M6 x 20 N/A 1.38 in N/A 2.01 in35 mm N/A 3/8 - 16 x 2 N/A 3.54 in90 mm N/A 9 lb40 N N/A 1.1 in28 mm N/A
N/A RT-15-TENSNR IN N/A M8 x 25 N/A 1.77 in N/A 2.52 in45 mm N/A 1/2 - 13 x 2 N/A 4.43 in112.5 mm N/A 14.6 lb65 N N/A 1.3 in34 mm N/A
N/A RT-18-TENSNR IN N/A M10 x 30 N/A 2.28 in N/A 3.11 in58 mm N/A 1/2 - 13 x 2-1/2 N/A 4.53 in115 mm N/A 40.5 lb180 N N/A 1.3 in34 mm N/A
N/A RT-27-TENSNR IN N/A M12 x 40 N/A 3.07 in N/A 4.25 in78 mm N/A 1/2 - 13 x 3-1/2 N/A 6.1 in155 mm N/A 85.4 lb380 N N/A 1.7 in44 mm N/A
N/A RT-38-TENSNR IN N/A M16 x 40 N/A 3.74 in N/A 5.51 in95 mm N/A 3/4 - 10 x 5 N/A 8.07 in205 mm N/A 164.1 lb730 N N/A 2.4 in60 mm N/A
N/A RT-45-TENSNR IN N/A M20 x 50 N/A 4.53 in N/A 7.87 in115 mm N/A 3/4 - 10 x 6 N/A 10.24 in260 mm N/A 292.5 lb1300 N N/A 3.1 in78 mm N/A
N/A RT-50-TENSNR IN N/A M24 x 60 N/A 5.120 in N/A 8.270 in130 mm N/A 3/4 - 10 x 6 N/A 11.42 in290 mm N/A 483.3 lb2150 N N/A 3.4 in86 mm N/A
N/A RT-N-11-TENSNR IN GALV N/A M6 x 20 N/A 1.38 in N/A 2.01 in35 mm N/A 3/8 - 16 x 2 N/A 3.54 in90 mm N/A 9 lb40 N N/A 1.1 in28 mm N/A
N/A RT-N-15-TENSNR IN GALV N/A M8 x 25 N/A 1.77 in N/A 2.52 in45 mm N/A 1/2 - 13 x 2 N/A 4.43 in112.5 mm N/A 14.6 lb65 N N/A 1.3 in34 mm N/A
N/A RT-N-18-TENSNR IN GALV N/A M10 x 30 N/A 2.28 in N/A 3.11 in58 mm N/A 1/2 - 13 x 2-1/2 N/A 4.53 in115 mm N/A 40.5 lb180 N N/A 1.3 in34 mm N/A
N/A RT-N-27-TENSNR IN GALV N/A M12 x 40 N/A 3.07 in N/A 4.25 in78 mm N/A 1/2 - 13 x 3-1/2 N/A 6.1 in155 mm N/A 85.4 lb380 N N/A 1.7 in44 mm N/A
N/A RT-N-38-TENSNR IN GALV N/A M16 x 40 N/A 3.74 in N/A 5.51 in95 mm N/A 3/4 - 10 x 5 N/A 8.07 in205 mm N/A 164.1 lb730 N N/A 2.4 in60 mm N/A
N/A RT-N-45-TENSNR IN GALV N/A M20 x 50 N/A 4.53 in N/A 7.87 in115 mm N/A 3/4 - 10 x 6 N/A 10.24 in260 mm N/A 292.5 lb1300 N N/A 3.1 in78 mm N/A
N/A RT-H-15-TENSNR IN N/A M8 x 25 N/A 1.77 in N/A 2.52 in45 mm N/A 1/2 - 13 x 2 N/A 4.43 in112.5 mm N/A N/A 1.3 in34 mm N/A
N/A RT-H-18-TENSNR IN N/A M10 x 30 N/A 2.28 in N/A 3.11 in58 mm N/A 1/2 - 13 x 2-1/2 N/A 4.53 in115 mm N/A N/A 1.3 in34 mm N/A
N/A RT-H-27-TENSNR IN N/A M12 x 40 N/A 3.07 in N/A 4.25 in78 mm N/A 1/2 - 13 x 3-1/2 N/A 6.1 in155 mm N/A N/A 1.7 in44 mm N/A
N/A RT-H-38-TENSNR IN N/A M16 x 40 N/A 3.74 in N/A 5.51 in95 mm N/A 3/4 - 10 x 5 N/A 8.07 in205 mm N/A N/A 2.4 in60 mm N/A
N/A RT-H-45-TENSNR IN N/A M20 x 50 N/A 4.53 in N/A 7.87 in115 mm N/A 3/4 - 10 x 6 N/A 10.24 in260 mm N/A N/A 3.1 in78 mm N/A
N/A RT-H-50-TENSNR IN N/A M24 x 60 N/A 5.120 in N/A 8.270 in130 mm N/A 3/4 - 10 x 6 N/A 11.42 in290 mm N/A N/A 3.4 in86 mm N/A
N/A RT-N-50-TENSNR IN GALV N/A M24 x 60 N/A 5.120 in N/A 8.270 in130 mm N/A 3/4 - 10 x 6 N/A 11.42 in290 mm N/A 483.3 lb2150 N N/A 3.4 in86 mm N/A
N/A RT-R-27-TENSNR IN N/A M12 x 40 N/A 3.07 in N/A 4.25 in78 mm N/A 1/2 - 13 x 3-1/2 N/A 6.1 in155 mm N/A 85.4 lb380 N N/A 1.7 in44 mm N/A
N/A RT-R-18-TENSNR IN N/A M10 x 30 N/A 2.28 in N/A 3.11 in58 mm N/A 1/2 - 13 x 2-1/2 N/A 4.53 in115 mm N/A 40.5 lb180 N N/A 1.3 in34 mm N/A
N/A RT-R-15-TENSNR IN N/A M8 x 25 N/A 1.77 in N/A 2.52 in45 mm N/A 1/2 - 13 x 2 N/A 4.43 in112.5 mm N/A 14.6 lb65 N N/A 1.3 in34 mm N/A
N/A RT-18-TENSNR IN-N/HDWR N/A M10 x 30 N/A 2.28 in N/A 3.11 in58 mm N/A N/A 4.53 in115 mm N/A 40.5 lb180 N N/A 1.3 in34 mm N/A
N/A RT-15-TENSNR IN-N/HDWR N/A M8 x 25 N/A 1.77 in N/A 2.52 in45 mm N/A N/A 4.43 in112.5 mm N/A 14.6 lb65 N N/A 1.3 in34 mm N/A
N/A RT-15-TENSNR IN-N/IDLR HDWR N/A M8 x 25 N/A 1.77 in N/A 2.52 in45 mm N/A N/A 4.43 in112.5 mm N/A 14.6 lb65 N N/A 1.3 in34 mm N/A
N/A RT-18-TENSNR IN-N/IDLR HDWR N/A M10 x 30 N/A 2.28 in N/A 3.11 in58 mm N/A 1/2 - 13 x 2-1/2 N/A 4.53 in115 mm N/A 40.5 lb180 N N/A 1.3 in34 mm N/A
N/A RT-27-TENSNR IN-N/IDLR HDWR N/A M12 x 40 N/A 3.07 in N/A 4.25 in78 mm N/A 1/2 - 13 x 3-1/2 N/A 6.1 in155 mm N/A 85.4 lb380 N N/A 1.7 in44 mm N/A
N/A RT-38-TENSNR IN-N/IDLR HDWR N/A M16 x 40 N/A 3.74 in N/A 5.51 in95 mm N/A N/A 8.07 in205 mm N/A 164.1 lb730 N N/A 2.4 in60 mm N/A
N/A RT-45-TENSNR IN-N/IDLR HDWR N/A M20 x 50 N/A 4.53 in N/A 7.87 in115 mm N/A 3/4 - 10 x 6 N/A 10.24 in260 mm N/A 292.5 lb1300 N N/A 3.1 in78 mm N/A
N/A RT-27-TENSNR IN-N/IDLR HDWR-50PK N/A M12 x 40 N/A 3.07 in N/A 4.25 in78 mm N/A N/A 6.1 in155 mm N/A 85.4 lb380 N N/A 1.7 in44 mm N/A
N/A RT-18-TENSNR IN-N/IDLR HDWR-HOLE N/A M10 x 30 N/A 2.28 in N/A 3.11 in58 mm N/A 1/2 - 13 x 2-1/2 N/A 4.53 in115 mm N/A 40.5 lb180 N N/A 1.3 in34 mm N/A
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