SP- 4 Static Pivot Tensioner
The Static Pivot Tensioner packs up to 10 pounds
of force into the smallest area of any York Size 4 tensioner.
The tensioner can be used inside or outside the belt and provides
up to 44 degrees of motion.
Range of adjustment - 1.25 inches (31.8mm) over a 44º
Maximum force against belt - 10 pounds (4.5 kg) continuous,
15 pounds (6.8 kg) peak
** Tensioner Height:
* Mounting Data:
footprint without idler pulley of 1.12 inches (28.4mm) wide
by 2.25 inches
clearance from mounting surface to bottom of pulley is .18
inches (4.6mm) except plastic
sleeve bearings require .23 inches (5.8 mm) minimum clearance.
one hole tapped 10-32 or M5 x .8 either through sheetmetal,
or blind hole
with minimum .38 thread depth
and one .25 dia by .25 min depth clearance hole.
See mounting template drawing
To find your tensioner height, determine Pulley Width + Belt
Clearance desired = X
X is less than or equal to .600 (15.2mm), tensioner height
is 0.925 (23.5mm)
X is between .600 (15.2mm) and .875 (22.2mm), tensioner height
is 1.200 (30.5mm)
X is larger than .875 (22.2mm), consult York Engineering
York tensioners are designed to mount securely onto a flat surface with just a single screw. The
tensioners allow minimal clearance between the belt and mounting surface. Tensioners also feature
different shaft lengths so they are also adjustable by York to provide greater clearance heights if
needed. The York website's Tensioner Configuration Tools automatically account for shaft changes,
if needed, when they create the specific tensioner part number for your application. Where even
greater belt clearances are needed, York can provide machined, anodized spacers to act as a raised
tensioner mounting base. Spacers are available in custom thicknesses while standard catalog
spacers .38 inches thick (9.7mm) for Size 4 and .25 inches (6.4mm) for Size 3 tensioners are always
in stock at York. Spacers are shown below and fit within the same footprint as the tensioners
themselves. The spacer part numbering system uses the last two digits of the part number to indicate
the thickness in decimal inches, with a tolerance of +/- .01.