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Installation and Operating Instructions
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.
Lever arm with nylon roller
shown installed
11.1 (0.44)
6.3
(0.25)
15.3 (0.6)
2 (0.08)
Ø7 (0.28)
Ø13.5 (0.53)x5.2 (0.2)
Metal/Nylon Roller
R8
6
(0.24)
25 (0.98)
Bulletin 440P-WA1 & 440P-WA1A Lever Arms
ATTENTION: 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.
General Data
• Designed for 440P-A short lever arm limit switches
• Metal or nylon roller available
• Roller diameter 13.5 mm (0.53 in.) x width 5.2 mm (0.2 in.)
• Lever arm radius 25 mm (0.98 in.)
• Lever arm length 40 mm (1.57 in.)
• Includes lock nut and washer
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.
IMPORTANT: Installation of Allen-Bradley limit switches should be in
accordance with local and/or national codes. Servicing
energized industrial control equipment can be hazarous if
not in accordance to recommended safety procedures.
ATTENTION: For safety applications
Rockwell Automation recommends
replacing the complete limit switch.
Lever Arm Dimensions [mm (in.)]
Instructions
1. Mount lever arm on keyed shaft in desired position.
2. Install washer.
3. Install Hex lock nut.
4. Torque Hex lock nut to 1…1.4 N•m (8.85…12.39 lb•in).
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Mounting Dimensions [mm (in.)]
Torque Specifications
Location Torque
8 mm Hex lock nut 1…1.4 N•m (8.85…12.39 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. 10000101189 Ver 00
February 2011
Printed in USA