Timer Belts | Timing Belts
Synchronous Belt Drives
Synchronous Belt Drives offer a comprehensive and integrated package of Belts of the highest quality and power capacity along with a versatile selection of standard Taper Lock Pulleys covering a variety of applications in the area of power transmission.
Synchronous belt range comprises Timing, High Torque Drive (HTD) and Extra Torque (FXT) belts covering drives upto 50 kW, 200 kW & 500 kW respectively.
The original trapezoidal cross-section of timing belt has under gone considerable development culminating first in the introduction of High Torque Drive belts and then Torque Drive Plus belts with their associated pulleys. The HTD & FXT belts have curvilinear tooth profile which enables the strength of high tensile load bearing cords to be fully utilised. The shape of teeth gives more uniform stress distribution and allows higher overall loading. The belt teeth are precisely formed and accurately spaced to ensure correct engagement with teeth on the pulleys. Tooth root lines lie substantially on pitch line, thus circular pitch is not altered while flexing.
Accurately spaced polychloroprene teeth ensure smooth engagement with the pulley grooves. HTD & FXT Belt Drives do not depend on the thickness to develop high tensile strength. Being thin, the heat build-up is minimised without sacrificing inherent power transmission capacity. Synchronous Belt Drives work over a range of shaft speeds maintaining a high transmission efficiency and constant angular velocity. Synchronous Drives extend these advantages to higher powers and torques, making possible designing of more compact drives.
Synchronous Belt Drives use Timing Pulleys provided with the unique Taper Lock System used widely the world over for fixing pulleys on shafts.
Features:
- Positive non-slip drive maintains exact speed ratio without creep or slip.
- Minimum heat build-up results in cooler operations.
- Do not stretch in use and are corrosion-free, the clean operation makes them ideal for contamination sensitive applications.
- Moderate oil and heat resistant
- Can withstand temperatures between – 20° C to 100° C.
Advantages:
- No maintenance, no lubrication is required. No re-tensioning. No need for adjustable motor bases. Reduced operating cost.
- Wide range of applications from FHP to 500 kW, speeds up to 20,000 rpm, speed ratio up to 20:1.
- Compact design with lesser weight. High flexibility allows the use of very small pulleys.
- Positioning accuracy at constant driven speeds with efficiencies up to 99%.
- Smooth operation and constant angular velocity with no jerk or vibration.
- Reduced belt tension. Longer drive bearing life.
- Optimized tooth design providing optimum meshing efficiency, energy loss reduced to an absolute minimum..
- Reduced noise levels.
CONSTRUCTION
| 'XL' Pitch 1/5" | ||
| Standard widths : 1/4" (Code 025) 5/16" (Code 031) 3/8" (Code 037) 1/2" (Code 050) 3/4" (Code 075) |
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| Length code | Pitch Length(inch) | No.of Teeth |
| 60XL 70XL 80XL 90XL 94XL 100XL 110XL 120XL 128XL 130XL 140XL 142XL 150XL 160XL 170XL 180XL 190XL 200XL 210XL 212XL 220XL 230XL 240XL 250XL 260XL 280XL 290XL 300XL 390XL 424XL 450XL |
6.0 7.0 8.0 9.0 9.4 10.0 11.0 12.0 12.8 13.0 14.0 14.2 15.0 16.0 17.0 18.0 19.0 20.0 21.0 21.2 22.0 23.0 24.0 25.0 26.0 28.0 29.0 30.0 39.0 42.4 45.0 |
30 35 40 45 47 50 55 60 64 65 70 71 75 80 85 90 95 100 105 106 110 115 120 125 130 140 145 150 195 212 225 |
| 'L' Pitch 3/8" | ||
| Standard widths : 1/2" (Code 050) 3/4" (Code 031) 1" (Code 037) 11/2" (Code 050) 2" (Code 075) |
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| Length code | Pitch Length(inch) | No.of Teeth |
| 124L 150L 154L 165L 173L 187L 191L 203L 210L 225L 240L 244L 255L 270L 285L 300L 322L 337L 345L 367L 390L 420L 439L 450L 480L 510L 540L 600L 660L 720L 765L |
12.375 15.000 15.375 16.500 17.250 18.750 19.125 20.250 21.000 22.500 24.000 24.375 25.500 27.000 28.500 30.000 32.250 33.750 34.500 36.750 39.000 42.000 43.875 45.000 48.000 51.000 54.000 60.000 66.000 72.000 76.500 |
33 40 41 44 46 50 51 54 56 60 64 65 68 72 76 80 86 90 92 98 104 112 117 120 128 136 144 160 176 192 204 |
| 'H' Pitch 1/2" | ||
| Standard widths : 3/4" (Code 031) 1" (Code 037) 11/2" (Code 050) 2" (Code 075) 3" (Code 075) |
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| Length code | Pitch Length(inch) | No.of Teeth |
| 200H 220H 240H 255H 270H 300H 330H 340H 350H 360H 375H 390H 395H 400H 420H 450H 465H 480H 510H 540H 570H 600H 630H 660H 700H 725H 750H 800H 810H 830H 850H 900H 980H 1000H 1100H 1140H 1200H 1250H 1400H 1700H |
20.0 22.0 24.0 25.5 27.0 30.0 33.0 34.0 35.0 36.0 37.5 39.0 39.5 40.0 42.0 45.0 46.5 48.0 51.0 54.0 57.0 60.0 63.0 66.0 70.0 72.5 75.0 80.0 81.0 83.0 85.0 90.0 98.0 100.0 110.0 114.0 120.0 125.0 140.0 170.0 |
40 44 48 51 54 60 66 68 70 72 75 78 79 80 84 90 93 96 102 108 114 120 126 132 140 145 150 160 162 166 170 180 196 200 220 228 240 250 280 340 |
| 'XH' Pitch 7/8" | ||
| Standard widths : 2"(Code 025) 3" (Code 031) 4" (Code 037) 5"(Code 050) |
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| Length code | Pitch Length(inch) | No.of Teeth |
| 464XH 507XH 560XH 630XH 700XH 770XH 840XH 980XH 1120XH 1260XH 1400XH 1540XH 1750XH |
46.375 50.75 56.00 63.00 70.00 77.00 84.00 98.00 112.00 126.00 140.00 154.00 175.00 |
53 58 64 72 80 88 96 112 128 144 160 176 200 |
