DE-STA-CO RT, RTM, RTL, RTL-FCB User Manual

SERVICE MANUAL

RITE-TORQ OVERLOAD CLUTCHES

(TORQUE LIMITERS)

SOLUTIONS IN MOTION™

WARNING

This is a controlled document. It is your responsibility to deliver this information to the end user of the

CAMCO/FERGUSON product. Failure to deliver this could result in your liability for injury to the user or damage

to the machine. For copies of this manual call your Customer Service Representative 800-645-5207

TABLE OF CONTENTS

General Information...........................................................................................3

Safety.........................................................................................................3

Operating Environment..............................................................................3

Application Recommendations..................................................................4

Requesting Service....................................................................................4

Overview............................................................................................................5

Location Map – RT & RTM Series.............................................................6

Location Map - RTL Series........................................................................7

Specifications.....................................................................................................8

Installation.........................................................................................................9

RT & RTM Series.......................................................................................9

RTL & RTL-FCB Series............................................................................10

Adjustments.....................................................................................................12

RT & RTM Series.....................................................................................12

Spring Sets for RT Clutches................................................................................13

RTL & RTL-FCB Series............................................................................14

Maintenance....................................................................................................15

General Information

The FERGUSON Torque Limiter is a high quality, precision mechanism. To gain the optimum benefits, the guidelines described in this manual should be used.

Safety

Read and follow all Warnings and Cautions prior to any service or repair.

1. Read your Overload Clutch Installation-Operation Instructions thoroughly before operating the unit, for your safety and the protection of your unit.

2. FERGUSON Overload Clutches are designed to protect the Index Drive only and will not protect against bodily injury.

3. Double check to be sure the power is off and cannot be turned on while working on the equipment.

4. Use extreme caution with jammed or unbalanced loads, which when cleared may set the machine in motion.

5. Keep all objects such as hands, clothing, and tools away from rotating or moving parts.

6. Use safety glasses or equivalent to protect your eyes.

7. Dowel pins and mounting screws must not protrude from the drive plate or driven member, as the clutch could become a solid coupling.

8. High humidity, contaminants, or wash down applications may cause rust within the clutch, resulting in operational failure. Lubricate every six months or more frequently as the application requires.

9. The FERGUSON clutch is not a "FAIL SAFE" device and cannot be used on "overhauling" or "holding" load applications.

10. When using chain drives, incorporate an idler sprocket to eliminate any slack.

NOTE: The above list includes major safety points to be observed, but should not be considered as limiting in safety precautions to be followed.

NOTE: In the event the unit is damaged, contact Industrial Motion Control’s Wheeling factory or your local representative, for replacement.

Operating Environment

This product is intended to operate in a clean environment. Excessive coolant, chips, dust, dirt or debris can adversely affect its performance and life. If this device does operate in a dirty environment periodic cleaning must be practiced and careful inspection of seals and accessories is necessary.

Application Recommendations

1. On applications other than the output of an IMC Index Drive, clutch speeds must not exceed 100 RPM.

2. High humidity, contaminants, or wash down applications may require special protection. If rust forms within the clutch, it may act as a solid coupling and will not release under overload conditions. Lubricate every six months or more frequently as the application requires.

3. Use bronze bushings on sprockets, dials, gears or pulleys when used at the high end of the speed range (100 RPM) to reduce wear.

4. Clutch couplings require accurate shaft alignment of .003" TIR. Insure that a clearance gap is maintained between the body and the drive plate around the full circumference to the clutch (Type RT S/S).

5. Use flange mounted clutches and clutch couplings whenever possible. These models provide superior mounting reliability (Type RT F/F or D).

6. Dowel pins should not protrude from the drive plate or driven members, as they may lock against the adjacent surface.

7. Do not operate without the detector limit switch electrically disconnecting the prime mover (motor), as galling of the contacting surfaces may result.

8. On high inertia applications, braking the prime mover is recommended in the dwell cycle of the INDEX DRIVE to minimize over travel.

9. IMC recommends using limit switches with rated travel not exceeding .008" for actuation.

10. The torque required to re-engage the clutch is usually 25% of the rating. Contact IMC for special design, anti-friction materials if the clutch is to be used with very low torque settings.

11. Never use the clutch with a torque setting close to the calculated operating torque. Actual torques may be higher. Torque spring tolerances and coefficients of friction vary with temperature and application. Allow 130% (1.3 service factor) when applying a FERGUSON clutch.

Requesting Service

Call our Technical Service Department in Wheeling, IL, USA at 800-645-5207 or 847-459-5200 between 8:00AM and 4:30PM CST. When requesting service, always provide the following information:

1. The model number of the torque limiter.

2. A clear description of the problem, including as much detail as possible of the circumstances leading up to the problem.

Overview

The drawings contained in this document are for illustrative purposes only. They are not intended to accurately represent the components and therefore are not to scale. The various models may be different than shown, depending upon options chosen or the particular configuration.

FIGURE 1

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