Fixed Center Variable Speed Pulley Drives (FC Series) (Interchange to Lenze Pulley)

Adjustable Center Variable Speed Pulley Drives

Speed Variation Ratio 1 : 6

0.25 KW TO 15 KW

Fc drive is suitable for 0.25kw to 15kw motor ratings.

The step less output speed range in case of 1440 RPM motor is from 565 to 3780 RPM Approximately.

The drive is consists of two variable speed pulleys & a belt .One pulley is mechanically Adjusted and mounted on motor shaft (driver pulley) and other pulley is spring loaded Which is mounted on Gear box / machine shaft (driven pulley).

The output speed variation is obtained by rotating Knob which is Fixed on Driver Pulley.

The variable speed belt is pulled in or out between the flanges of both the pulleys. There By changing the effective running diameter of the belt and providing speed variation of 1:6 of spring loaded pulley (driven pulley).

How To Select Fc- Drive & Belt ?

While selecting the Drive, following parameters are essential.

Known -

  • Motor power
  • Centre distance between Motor shaft and Machine / Gear box shaft.

To Find -

  • Refer table 1 for selection of FC- Drive size.
  • Refer table 2 for dimensions.
  • Refer table 3 for selection of belts.

Table - 1 : Selection Of F. C. Drives Size

KW FC DRIVE Size RPM Speed Range
      Min Max
0.25 to 0.75
0.25 to 0.55
0.25
130 1410
920
675
620
410
305
3285
2160
1585
1.1 to 1.5
0.75 to 1.1
0.37 to 0.55
160 1410
920
710
580
380
290
3540
2310
1780
2.2 to 3.7
1.5 to 2.2
0.75 / 1.1 / 1.5
205 1425
940
700
565
375
280
3675
2435
1800
5.5 to 7.5
3.7 to 5.5
2.2 to 3.7
252 1440
960
710
570
380
280
3725
2485
1840
9.3 / 11 to 15
7.5 / 9.3 / 11
5.5 / 7.5
315 1450
965
720
570
380
285
3780
2500
1865

Table - 2 : Dimensions

FC Drive
Size
D L P d1 d2
Min Max min max
130 130 95 208 14 19 14 22
160 160 110 244 19 24 18 28
205 205 130 264 24 28 19 32
252 252 160 331 28 38 24 40
315 315 196 370 38 42 28 45

Table - 3 : Selection Of Belt Length

FC DRIVE SIZE 130

Centre Distance 'a' mm 150 175 200 225 250 275 300 325 350 375 405 435 465
Belt length Li mm 550 600 650 700 750 800 850 900 950 1000 1060 1120 1180

FC DRIVE SIZE 160

Centre Distance 'a' mm 166 192 217 242 268 293 318 343 373 404 434 469 504 544
Belt length Li mm 650 700 750 800 850 900 950 1000 1060 1120 1180 1250 1320 1400

FC DRIVE SIZE 205

Centre Distance 'a' mm 223 248 274 299 329 360 390 425 461 501 551 602 652
Belt length Li mm 850 900 950 1000 1060 1120 1180 1250 1320 1400 1500 1600 1700

FC DRIVE SIZE 252

Centre Distance 'a' mm 286 316 347 382 418 458 509 559 609
Belt length Li mm 1060 1120 1180 1250 1320 1400 1500 1600 1700

FC DRIVE SIZE 315

Centre Distance 'a' mm 351 392 443 493 544 595 695 816 947
Belt length Li mm 1320 1400 1500 1600 1700 1800 2000 2240 2500

Caution - Change the speed in Running condition only

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Manufacturer and Exporter of Mechanical Variable Speed Pulley Drives, Stepless Variable Speed Belt Drives, Vari Speed Belts, Variable Speed Drive for flameproof / explosive areas. We also design & manufacture custom built drives & pulleys as per customer’s requirements.

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