The driver and the driven shafts are both stationary. The drive consists of two adjustable pitch diameter pulleys. One pulley is manually controlled by means of an adjusting screw. The driven pulley adjusts automatically to belt movement. Speed variation is accomplished by turning the adjusting screw in the mechanical pulley, causing the pulley faces to move in or out and, therefore, changing the pitch diameter at which the belt rides. This causes a compensating opposite change of the pitch diameter in the automatic pulley, usually mounted as the driven pulley. The RPM of the driven shaft changes with the change of ratio in the pitch diameters of the two pulleys.
Dimensions and Specifications:
| HP Ratings | ||||||||||
| Driven RPM 1750 to Max. |
at Min. |
Drive Ratio |
RPM Range 1750 Motor |
Driver Model # |
Driven Model # |
Face Diameter |
Length | Belt Size |
Standard Bore Sizes |
|
| MCV 30 | 3.38 | .5•.625•.75 | ||||||||
| 0.75 | 0.38 | 4:01 | 875/3500 | 30TBR | 3.38 | 6.18 | A | .5•.625•.75 | ||
| 1 | 0.39 | 3.1:1 | 687/2106 | 40 TBR | 4.25 | 6.18 | A | .5•.625•.75 | ||
| MCV 500 | 5 | .625•.75•.875 | ||||||||
| 1.5 | 0.55 | 7.1:1 | 647/4625 | 50 TBR | 5 | 7.5 | B | .625•.75•.875 | ||
| 2 | 0.64 | 5:01 | 557/3014 | 57-20 TBR | 5.75 | 7.5 | B | .5•.625•.75•.875 | ||
| 2 | 0.64 | 5.4:1 | 557/3014 | 57 TBR | 5.75 | 9.01 | B | .75•.875•1•1.125 | ||
| 2 | 0.55 | 4.6:1 | 485/2248 | 66 TBR | 6.63 | 8 | B | .75•.875•1•1.125 | ||
| 2 | 0.52 | 3.8:1 | 367/1408 | 86 TBR | 8.63 | 8 | B | .75•.875•1•1.125 | ||
| MCV 57 | 5.75 | .75•.875•1•1.125 | ||||||||
| 3 | 1.1 | 6.9: | 1648/4500 | 57 TBR | 5.75 | 9.01 | B | .75•.875•1•1.125 | ||
| 3 | 0.97 | 5.7:1 | 564/3214 | 66 TBR | 6.63 | 9.01 | B | .75•.875•1•1.125 | ||
| 5 | 1.22 | 4.0:1 | 427/1750 | 86 TBR | 8.63 | 9.01 | B | .75•.875•1•1.125 | ||
| MCW 600 | 6.13 | .625•.75•.875 | ||||||||
| 1 | 0.31 | 10:01 | 550/5500 | 60 TBR | 6.13 | 8.46 | 1422V | .625•.75•.875 | ||
| 1.5 | 0.34 | 7.5:1 | 400/3000 | 75 TBR | 7.5 | 8.46 | 1422V | .75•.875•1•1.125 | ||
| MCW 70 | 7.13 | .625•.75•.875•1 | ||||||||
| 2 | 0.48 | 9.6:1 | 423/4075 | 80 TBR | 8 | 9.88 | 1922V | .75•.875•1•1.125 | ||
| 3 | 0.65 | 7.7:1 | 375/2863 | 90-19 TBR | 9 | 10.57 | 1922V | 510 Collet | ||
| 3 | 0.6 | 5.8:1 | 305/1776 | 110TBR | 11 | 10.57 | 1922V | |||
| MCW 77 | 7.75 | .875•1•1.125 | ||||||||
| 3 | 0.77 | 7.7:1 | 450/3470 | 90-19 TBR | 9 | 11.34 | 1922V | 510 Collet | ||
| 5 | 1 | 5.8:1 | 365/2108 | 110 TBR | 11 | 11.34 | 1922V | 510 Collet | ||
| MCW 90 | 9 | .875•1•1.125 | ||||||||
| 3 | 0.77 | 10:01 | 450/4500 | 90-23 TBR | 9 | 11.69 | 2322V | 510 Collet | ||
| 5 | 1 | 9:01 | 380/3420 | 106 TBR | 10.6 | 11.69 | 2322V | 510 Collet | ||
| 5 | 0.96 | 7.4:1 | 336/2490 | 120 TBR | 12 | 11.69 | 2322V | 510 Collet | ||
| MCW 90-75 | 9 | .875•1•1.125 | ||||||||
| 7.5 | 1.7 | 6:01 | 395/2397 | 120 TBR | 12 | 11.74 | 2322V | 510 Collet |