RunRight® SE-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.

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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)

N/A RT F15 FRONT MOUNT TENSIONER N/A M6 N/A 1.77 in45 mm N/A 2.52 in64 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 RT F18 FRONT MOUNT TENSIONER N/A M8 N/A 2.28 in58 mm N/A 3.11 in79 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 RT F27 FRONT MOUNT TENSIONER N/A M10 N/A 3.07 in78 mm N/A 4.25 in108 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 RT F38 FRONT MOUNT TENSIONER N/A M12 N/A 3.74 in95 mm N/A 5.51 in140 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 RT F45 FRONT MOUNT TENSIONER N/A M20 N/A 4.53 in115 mm N/A 7.870 in200 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 RT F50 FRONT MOUNT TENSIONER N/A M20 N/A 5.120 in130 mm N/A 8.270 in210 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
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