Timing Pulleys & Belts => Timing Pulleys => Timing pulleys

Timing pulleys

Naismith Engineering offer a large range of Timing Pulleys in all the common Profiles Classical, HTD, GTR which is a Poly Chain replacment and Metric T & AT

Classical

Naismith Engineering is one of Australia's largest stockist of Classical timing pulleys. We also carry the rubber belts to suit from Optibelt. Pulleys are available in both pilot & taper bore. Plastic pulleys are available for both ‘XL’ & ‘L’. Clamp plates, to suit long length belting, are also available. Special pulleys in aluminium and steel are manufactured in our own factory.

 

Pitch

Widths

XL (Extra Light) 0.200" (1/5") 3/8"
L (Light) 0.375" (3/8") 1/2" & 1"
H (Heavy) 0.500" (1/2") 1", 1 1/2", 2" & 3"
XH (Extra Heavy) 0.875" (7/8") 2" & 3"
 

Brand:- SIT

HTD

The next step in high performance drives, HTD allows higher torque and speeds. We stock a large range of pulleys. We also carry the rubber belts to suit from Optibelt. Pulleys are available in both pilot & taper bore. Clamp plates, to suit long length belting, are also available. Special pulleys in aluminium and steel are manufactured in our own factory.

Pitch

Widths

3mm 9mm, 15mm
5mm 9mm, 15mm & 25mm
8mm 20mm, 30mm, 50mm & 85mm
14mm 40mm, 55mm, 85mm, 115mm & 170mm

 

Brand:- SIT

GTR

The GTR Sprockets run with Delta Chain belts from Optibelt, and Poly Chain GT belts from Gates and are a “drop-in” replacement for existing Poly Chain GT. They are Ideal for high performance Belt drives and can last up to 5 times longer than problem roller chain drives. Most GTR sprockets from SIT are manufactured in cast iron, with selected sizes in ductile iron or steel. Non standard sizes can be manufactured against order. GTR Sprockets exceed recognized industry standards for allowable imbalance, providing the end-user optimum performance over the long haul.

 

Pitch Widths
8mm 12mm, 21mm, 36mm & 62mm
14mm 20mm, 37mm, 68mm, 90mm & 125mm

Brand:- SIT

Metric

 

 

T and AT are the European standard. Naismith Engineering stock a full range of pulleys, as well as belts to suit from Optibelt. The pulleys are all in aluminium. Clamp plates, to suit long length belting, are also available.

Pitch

Widths

T2.5 = 2.5mm 6mm
T5 = 5mm 10mm, 16mm & 25mm
T10 = 10mm 16mm, 25mm, 32mm & 50mm
AT5 = 5mm 10mm, 16mm & 25mm
AT10 = 10mm 16mm, 25mm, 32mm & 50mm

 

Brand:- SIT

Timing Bar

Timing Bars are available to suit XL, & L Classical timing profiles, 3M & 5M HTD timing profiles and T5, T10, AT5 & AT10 Metric timing profiles. All Timing Bars are manufactured in aluminium and come in lengths of 140mm or 160mm depending on the diameter of the bar.

 

Brand:- SIT