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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Item #

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)

68514417451 N/A RT 11 RUNRIGHT TENSIONER, STANDARD 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
68514417452 N/A RT 15 RUNRIGHT TENSIONER, STANDARD 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
68514417453 N/A RT 18 RUNRIGHT TENSIONER, STANDARD 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
68514417454 N/A RT 27 RUNRIGHT TENSIONER, STANDARD 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
68514417455 N/A RT 38 RUNRIGHT TENSIONER, STANDARD 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
68514417456 N/A RT 45 RUNRIGHT TENSIONER, STANDARD 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
68514453341 N/A RT 50 RUNRIGHT TENSIONER, STANDARD 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
68514426709 N/A RT N11 TENSIONER W/NEOPRENE, OIL RESISTANT 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
68514425597 N/A RT N15 TENSIONER W/NEOPRENE, OIL RESISTANT 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
68514417490 N/A RT N18 TENSIONER W/NEOPRENE, OIL RESISTANT 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
68514417491 N/A RT N27 TENSIONER W/NEOPRENE, OIL RESISTANT 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
68514417492 N/A RT N38 TENSIONER W/NEOPRENE, OIL RESISTANT 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
68514417493 N/A RT N45 TENSIONER W/NEOPRENE, OIL RESISTANT 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
68514457517 N/A RT H15 TENSIONER, HIGH TEMP 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
68514453285 N/A RT H18 TENSIONER, HIGH TEMP 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
68514453287 N/A RT H27 TENSIONER, HIGH TEMP 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
68514453289 N/A RT H38 TENSIONER, HIGH TEMP 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
68514453291 N/A RT H45 TENSIONER, HIGH TEMP 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
68514457519 N/A RT H50 TENSIONER, HIGH TEMP 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
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