Product Description
The Allen-Bradley 803-B8RHRA is a robust Style B rotating cam limit switch designed for repetitive machine cycles. Featuring 8 circuits, a right-hand standard shaft extension, and a 40:1 speed reducer, it offers adjustable internal dwell time and bidirectional rotation. It includes 10 Amp snap-action contacts (1 N.O., 1 N.C.), a spring-loaded cam-roller assembly, and a cam duration range of 14 to 346 degrees, with a maximum shaft speed of 150 RPM. The switch, housed in a Type 1 indoor-rated enclosure suitable for any mounting plane, operates between -30 and 66 degrees Celsius and can be stored between -30 and 93 degrees Celsius. It exhibits normal shaft torques of 3, 7, and 0.5 inch-pounds depending on cam roller position and weighs approximately 16.3 kg (36 lbs). Timing adjustments are only possible when the switch is stationary. Common applications include waterway gate operations, punch presses, assembly lines, packing machines, injection molding, and steel forming.
Is Your Device Showing These Signs?
The Allen Bradley 803-B8RHRA suffers from common failures including coil burnout due to overvoltage or inrush current, contact erosion from repetitive switching of inductive loads, and mechanical wear in the operating mechanism leading to sluggish response or failure to actuate. Troubleshooting involves checking coil resistance, inspecting contact surfaces for pitting or welding, and verifying proper mechanical linkage movement. Replacement of the coil, contacts, or entire relay is necessary to restore functionality. Proper surge suppression and adherence to specified operating parameters mitigate these issues.
Technical specifications
The Allen-Bradley 803-B8RHRA is a heavy-duty, 8-circuit rotating cam limit switch ideal for repetitive machine cycles. It features a right-hand shaft, 40:1 speed reducer, adjustable dwell time, bidirectional rotation, and 10 Amp snap-action contacts. It's designed for indoor use, operates within a wide temperature range, and is suitable for various industrial applications like gate operations, presses, and assembly lines. Timing adjustments are only possible when the switch is not rotating.
Our Repair Process for the
803-B8RHRA
Our repair process for the Allen Bradley 803-B8RHRA relay begins with a comprehensive assessment of the unit to diagnose coil burnout, contact erosion, or mechanical wear. Technicians measure coil resistance, visually inspect contact surfaces for damage, and evaluate mechanical linkage movement. Upon identifying the failure, the appropriate component, whether the coil, contacts, or the entire relay, is replaced with a new, fully tested part. Following the replacement, the relay undergoes rigorous testing to ensure it meets original performance specifications and operates reliably under specified conditions. To prevent future failures, we recommend implementing proper surge suppression and adhering strictly to the relay's specified operating parameters.
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.