Timing Belts & Pulleys
Borg Transmissions ltd carry a wide range of various types of timing pulleys, these include the following types.
CLASSICAL TIMING PULLEYS
Section |
Pitch |
Tooth Height |
XL |
5.080mm |
1.27mm |
L |
9.525mm |
1.91mm |
H |
12.70mm |
2.29mm |
T2.5 |
2.50mm |
0.70mm |
T5 |
5.00mm |
1.20mm |
T10 |
10.0mm |
2.50mm |
T20 |
20.0mm |
5.00mm |
AT5 |
5.00mm |
1.20mm |
AT10 |
10.0mm |
2.50mm |
Types.
These pulleys are available in wide range of sizes and styles,
The basic information we require to size a pulley is:
Tooth Pitch - Belt Width - Number of Teeth / Pulley Diameter.
Other Options:
Bore:
Most timing pulleys are available in either a taper bush or a pilot bore option. We also offer a machining service and can have your pulleys bored and keyed to your requirements.
Flanges:
Nearly all timing pulleys are available with or without flanges.
Material:
As standard timing pulleys are usually made from either steel or cast iron, smaller sizes in steel larger in cast. However many of the smaller sizes are available in aluminium, you will need to specify this requirement at the time of your enquiry. Large size pulleys can be manufactured in aluminium, however these are made to order which would be reflected in the price.
HTD SYCHRONOUS PULLEYS
Section | Pitch | Height |
3m | 3.0mm | 1.17mm |
5m | 5.0mm | 2.06mm |
8m | 8.0mm | 3.36mm |
14m | 14mm | 6.02mm |
Types.
These pulleys are available in wide range of sizes and styles,
The basic information we require to size a pulley is:
Tooth Pitch - Belt Width - Number of Teeth / Pulley Diameter.
Other Options:
Bore:
Most timing pulleys are available in either a taper bush or a pilot bore option. We also offer a machining service and can have your pulleys bored and keyed to your requirements.
Flanges:
Nearly all timing pulleys are available with or without flanges.
Material:
As standard timing pulleys are usually made from either steel or cast iron, smaller sizes in steel larger in cast. However many of the smaller sizes are available in aluminium, you will need to specify this requirement at the time of your enquiry. Large size pulleys can be manufactured in aluminium, however these are made to order which would be reflected in the price.
SPECIAL TIMING PULLEYS
We can have special or odd size pulleys manufactured, ideally we require a drawing, if no drawing is available we can reverse engineer from samples. If there is no drawing or sample speak to our sales team we may still be able to help.
SYNCHRONOUS (TIMING) BELTS
Synchronous belts drives are one of the most popular types of power transmission drives in use today. Widely used because they offer important properties such as fixed speed ratios, no re-tensioning after installation, low maintenance with a wide variety of power transmission capacity and speed drives.
CLASSICAL TIMING BELTS
Section |
Pitch |
Tooth Height |
Belt Thickness |
XL |
5.080mm |
1.27mm |
2.30mm |
L |
9.525mm |
1.91mm |
3.60mm |
H |
12.70mm |
2.29mm |
4.30mm |
T2.5 |
2.50mm |
0.70mm |
1.30mm |
T5 |
5.00mm |
1.20mm |
2.20mm |
T10 |
10.00mm |
2.50mm |
4.50mm |
T20 |
20.00mm |
5.00mm |
8.00mm |
AT5 |
5.00mm |
1.20mm |
2.70mm |
AT10 |
10.00mm |
2.50mm |
5.00mm |
Typical Designation:
170 XL 050
170 = 17.0” pitch length XL = pitch (5.080mm) 050 = width 0.50”
T10 x 960 x 50
960 = 960mm pitch length T10 = 10mm pitch length 50 = width 50mm
Note: when identifying a timing belt it is preferable to count the number of pitches on the existing belt rather than measuring the length, as older belts may have stretched.
HTD SYCHRONOUS BELTS
Selection | Pitch | Tooth Height | Belt Thickness |
3M | 3mm | 1.17mm | 3.4mm |
5M | 5mm | 2.06mm | 3.8mm |
8M | 8mm | 3.36mm | 6mm |
14m | 14mm | 6.02mm | 10mm |
Typical Designation:
960 – 8M - 50
960= 960mm pitch length 8M = pitch (8.00mm) 50 = width 50mm
Note: when identifying a timing belt it is preferable to count the number of pitches on the existing belt rather than measuring the length, as older belts may have stretched.
SPECIAL TIMING BELTS AND BELTING
Timing belts are available in range of special materials (pvc’s and plastics etc.) with various types of brandings (Kevlar, steel etc.), please talk to our sales team if you do have any special requirement, we will be able to advise you on the best possible solution for you
CUT EDGE – COGGED BELT
Construction:
Special top rubberised fabric.
Polychloroprene cushion rubber compound.
Specially treated and stabilised polyester and Kevlar cord.
Fibre filled Polychloroprene rubber compound.
Moulded cogged for better flexibility.
Applications:
- Automotive Industries
- General Engineering Industries
- Agricultural Industries
Range of Sizes:
Section |
Top x Depth (Li = inside length) |
Min-Li |
Max-Li |
ZX |
10mm x 6mm |
23" |
200" |
AX |
13mm x 8mm |
22" |
200" |
BX |
17mm x 11mm |
21" |
200" |
CX |
22mm x 14mm |
21" |
200" |
Min-Lp |
Max-Lp |
||
SPZ |
10mm x 8mm |
590mm |
5117mm |
XPA |
13mm x 10mm |
590mm |
5124mm |
XPB |
17mm x 14mm |
600mm |
5140mm |
XPC |
22mm x 18mm |
600mm |
5163mm |
Note The Standard sizes are available from stock; however the specials and very large sizes may be on a lead time from the factory.