Installation and Operating Instructions
Bulletin 440P-WM3A Wide Roller with Short Lever
IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.
This publication does not include all specifications, dimensions, or any special installation considerations. Refer to the product catalog pages for additional information.
To avoid electrical shock and unintended operation of
equipment, disconnect all power to the limit switch and
the controlled equipment before proceeding with any
repair or adjustment of the limit switch.
ATTENTION
Approximate Dimensions [mm (in.)]
13.5 dia
(0.532 dia)
General Data
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Designed for 440P-M short lever limit switches
Wide roller
Roller diameter 13.5 mm (0.53 in.) x width 25.4 mm (1 in.)
Lever radius 35 mm (1.5 in.)
Lever length 55 mm (1.77 in.)
Includes Allen head screw
7.2 dia
(0.284 dia)
Principles, Standards, and Implementation
Operating specifications must be followed. Actuators should
be displaced beyond the point where direct opening action
occurs. If adjustable actuators become loose they may defeat
the direct opening action feature of the limit switch. These
devices are not to be used to directly control a motor.
ATTENTION
16.0
(0.630)
35.4
(1.394)
Installation of Allen-Bradley limit switches should be in
accordance with local and/or national codes. Servicing
energized industrial control equipment can be
hazardous if not in accordance with recommended
safety procedures.
M4 Screw
For safety applications, Rockwell Automation
recommends replacing the complete limit switch.
11.5
(0.453)
Instructions
1. Mount lever on shaft in desired position.
2. Torque Allen head screw to 1.5…2.1 N•m
(13.28…18.59 lb•in).
Torque Specifications
Location
Torque
4 mm Allen head screw 1.5…2.1 N•m (13.28…18.59 lb•in)
ATTENTION
Under no circumstances must the switch be actuated
beyond the mechanical travel specified. Serious
damage to the device and property could result.
Maintenance
These devices require little maintenance, but routine visual
inspection is recommended to keep foreign debris from
collecting on the exterior actuators and rollers.
Removing the operator head is not recommended as loose
internal components may be lost or improperly re-installed.
Actuation Guidelines
The method of actuation and over travel has significant
influence on the service life of the limit switch. To maximize
the service life, it is recommended to provide an actuator with
a 30° pressure angle and a surface hardness of RC-45 max.
Drwg. No. 10000640487 Ver 00
440P-IN026A-EN-P
May 2013 — Printed in USA
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