Lenze 11.218 Variable speed pulleys - Manual (Page 14)

Mechanical installation
Mounting
MA 11.1023 DE/EN/FR 3.0
14

H2_montage-anbau-zentralverstellg
Size
10
A 133 136 149 162 174 204 224 250 275 300 325 350 375 400
l 468 475 500 525 550 600 650 700 750 800 850 900 950 1000
13
A 142 173 193 218 244 269 294 319 344 369 400 430 460
l 550 600 650 700 750 800 850 900 950 1000 1060 1120 1180
16
A 166 192 217 242 268 293 318 343 373 404 434 469 504 544
l 650 700 750 800 850 900 950 1000 1060 1120 1180 1250 1320 1400
20
A 223 248 274 299 329 360 390 425 461 501 551 602 652
l 850 900 950 1000 1060 1120 1180 1250 1320 1400 1500 1600 1700
25
A 286 316 347 382 418 458 509 559 609
l 1060 1120 1180 1250 1320 1400 1500 1600 1700
31
A 351 392 443 493 544 595 695 816 947
l 1320 1400 1500 1600 1700 1800 2000 2240 2500
40
A 425 476 500 526 626 747 878 1028 1204 1334 1389
l 1600 1700 1750 1800 2000 2240 2500 2800 3150 3210 3520
Tab. 2 Center distance (a) and belt length (l)
Attaching the adjustment device
Adjusting force ”F” (Fig. 1 and Fig. 2
) should be applied centrally to the bearing of the
mechanically-adjustable pulley. If the force is applied at one point (not for sizes 25, 31 and
40), then the adjusting force ”F” should take effect on the ball bearing over the arc marked
out by the wrap-around of the wide section V-belt.
Mounting the central adjustment
Use the handwheel to turn the spindle (1) in the bearing cap (2) until the knurled nut (3) is
in position. Push the pre-assembled spindle bearing (4) into the hub of the
mechanically-adjustable pulley and fit the circlip/retaining ring (5).
Place the wide section V-belt in position as desribed in the chapter ”Assembly”. Attach the
radial fixing to the toggle (11) (the toggle should be guided by a slot). Take care that the
toggle (11) can move freely over the entire adjustment length.
Setting the central adjustment
Switch on the driveand usethe handwheelto adjustthe speedas required. The spindlenuts
(6) and knurled nut (3) must be tightened onto the face of the housing and secured by the
grub screws (7).
The speed range that is set up must not exceed the output speed range that is given in the
catalog.
The drive belt must not run on its inside surface at any speed setting (noisy running). If
necessary, trim the speed range and adjust the spindle nuts accordingly (6).
If the handwheel has a setting pointer, then check, after setting the speed, that the
indicated value matches the actual speed. If there is a difference, loosen the grub screw (10)
and pull the setting pointer out of the handwheel (8).
Then, keeping the scale upright, rotate the setting pointer (9) until the indicated value
matches the actual speed. Push the setting pointer into the handwheel again, in this
position, and fix it with the grub screw (10).