Product Description
The Allen-Bradley 803-B4RB Rotating Cam Limit Switch with Speed Reducer is an industrial circuit control device designed for machines with cyclical operations where motion is linked to shaft rotation. Featuring a shaft-mounted cam that actuates contacts, it's suitable for heavy-duty applications like punch presses and steel forming. It offers 4 control circuits with 10A snap-action contacts, adjustable cams for variable dwell times, and a robust design including oversized ball bearings and a cast iron side plate for harsh environments. Timing and dwell are adjustable at standstill, and it includes a left shaft extension. The speed reducer has a 60:1 ratio. It operates between -30 to 66C, stores between -30 to 93C, is housed in a NEMA Type 1 enclosure, and carries CE, CSA, and UL certifications. It weighs 10.9 kg and measures 144.5 x 82.6 x 177.8 mm.
Is Your Device Showing These Signs?
The Allen Bradley 803-B4RB push button commonly experiences issues such as contact degradation due to oxidation or wear, leading to intermittent or failed electrical continuity. Operators report problems with the mechanical actuation, including sticking or binding of the plunger mechanism, preventing proper circuit control. Environmental factors cause corrosion on the internal components, impacting performance. Replacement of the contact block, plunger assembly, or entire unit resolves these failures. Troubleshooting includes continuity testing of the contacts and visual inspection for mechanical damage.
Technical specifications
The Allen-Bradley 803-B4RB is a heavy-duty rotating cam limit switch with a 60:1 speed reducer, designed for controlling cyclical machine operations linked to shaft rotation. It features 4 adjustable control circuits with 10A contacts, a robust build for harsh environments, and certifications like CE, CSA, and UL. Its timing and dwell are adjustable at standstill, and it includes a left shaft extension.
Our Repair Process for the
803-B4RB
Our repair process for the Allen Bradley 803-B4RB push button begins with a thorough inspection for contact degradation, mechanical actuation issues, and environmental corrosion. Technicians perform continuity testing to assess electrical connectivity and visually examine the plunger mechanism for sticking or binding. Upon identifying the failure point, the defective component, whether it be the contact block, plunger assembly, or the entire unit, is replaced with a new, fully functional part. Post-repair, rigorous testing ensures proper circuit control and reliable operation before the push button is returned to service.
Your Guarantee: Warranty & Lifetime Support
Your satisfaction is our top priority, and we confidently stand behind the quality of our repairs. That's why every repair service is covered by our comprehensive 24-month warranty. Furthermore, we offer lifetime phone support – if you have questions or need assistance related to our repair down the road, we're here to help. Our service commitment is straightforward: we guarantee our work, and if you're not satisfied, we will make it right. Learn More about our Repair process.
Comprehensive Repairs You Can Depend On
We take immense pride in the quality and reliability of our work. Our process goes beyond simply fixing the immediate problem. We perform a comprehensive inspection of your main board (or other equipment) and proactively replace components known to be failure-prone or showing signs of potential future failure. Before any item is returned, it undergoes rigorous functional testing to ensure it meets performance specifications and operates flawlessly. Visit our main Repair Services page to learn more.
Save Significantly
Our primary goal is to save you hundreds, or even thousands, of dollars compared to the cost of new equipment replacement. By repairing existing components, we provide an economical solution that is also eco-friendly. At Roc Industrial, our commitment to integrity and community drives our consistent growth and ensures you receive a reliable, cost-effective solution.
Please Note: Roc Industrial operates as an independent service provider and is not an authorized distributor for the manufacturers or brands mentioned. Consequently, the original manufacturer's warranty is not applicable to items repaired or sold by us. Roc Industrial provides its own 2-year warranty on all repair services performed.