Service manual

5. Cam motion in degrees.
The cam is divided into two basic parts, motion and dwell. Motion is the angular segment in
which the cam does its work rotating the output shaft one complete stop.
After motion is complete the cam is considered to be in dwell for the reminder of the 360
degree rotation.
Dwell means there is no motion taking place at the output of the Index Drive even though the
input shaft continues to rotate.
Example: 270 degree motion means that during 270 degrees of input rotation the output shaft
makes one index. During the remaining 90 degrees of input rotation the output does not move.
IMPORTANT NOTE: Some CAMCO units are called "type 2" units. In this case the cam has two
motion
periods and two dwell periods on the cam.
Example: 250P6H20-270 Type 2
(also shown as Type II ).
For 135 degrees on input rotation the output shaft makes one index. During the next 45 degrees of
input rotation the output does not move. For the next 135 degrees of input rotation the output makes
a second index. During the next 45 degrees of input rotation the output does not move. In summary,
two complete cycles of index and dwell are provided for one rotation of the input shaft. Therefore,
50RPM at the input (cam) shaft equals 100 indexes/minute.
CAMCO'S MOST POPULAR INDEX DRIVE MODELS
(250P, 387P, 512P, 662P, 900P, 1200P, 1800P) - (400RA, 401RA, 512RA, 662RA, 663RAD, 900RAD,
1200RAD) - (350RG, 500RG, 700RG) - (425RD, 800RD, 1301RD, 1801RD, 601RDM, 902RDM, 1305RDM)
(E2000, E3000, E4000, E6100)
This list is not complete but more representative of the model likely encounter for a typical application.
INDEX DRIVE SERVICE DATA
1. The Index Drive oil level should be checked monthly and oil added as required to maintain proper level.
2. The oil should be changed as outlined in the lubrication section.
3. All grease fittings should be lubricated with the recommended grease once per month.
4. All index drive mounting bolts should be checked for tightness after three months of service
and annually thereafter.
5. Cam followers should be inspected every 8000 hours of operation as outlined in its related section.
INDEX DRIVE LUBRICATION DATA
OIL LEVEL
CAMCO Index Drives are furnished with a "bulls-eye" type oil level sight gauge. The oil level should be
checked when the unit is stopped at which time the oil level should reach the center of the sightglass (see
page 3 for estimated oil capacity). During oil changes this "bulls-eye" can be removed for
cleaning.
CAUTION: CAMCO units are shipped without oil. Be sure to fill prior to initial startup.
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