Cal-Royal RCBB31 4-1/2" x 4-1/2" – 1/4" Radius Ball Bearing Hinge NRP

The Cal-Royal RCBB31 is a high-performance ball bearing hinge designed for commercial and institutional doors. With a 1/4" radius corner and heavy-duty construction, it ensures smooth operation and long-term durability in high-traffic environments.

Key Features:

• Size: 4-1/2” x 4-1/2” with 1/4” radius corners – fits standard commercial doors.
• Ball Bearing Design: Reduces friction for smoother, quieter door operation.
• Heavy-Duty Construction: Made from high-quality steel or stainless steel for strength and longevity.
• Full Mortise Hinge: Designed for flush installation in wood or metal doors.
• ANSI/BHMA Certified: Meets A156.1 standards for commercial-grade hinges.
• Non-Removable Pin: Ideal for security-sensitive applications.
• Finish Options: Available in US26D (Satin Chrome), US10B (Oil Rubbed Bronze), US3 (Polished Brass), and more.
• Application: Suitable for doors weighing up to 200 lbs in high-traffic areas.

Perfect For:

• Commercial Buildings
• Schools & Universities
• Hospitals & Healthcare Facilities
• Office Spaces
• Government & Institutional Facilities

Shipping & Delivery

We are committed to getting your order to you as quickly as possible. Below is an overview of our standard shipping timelines.

In-Stock Items

Orders for in-stock items are processed and shipped within 24–48 hours of order placement. You will receive a shipping confirmation with tracking information once your order has been dispatched.

Out-of-Stock / Special Order Items

Items that are not currently in stock are typically available and ready to ship within approximately 2 weeks. Our team will notify you of any changes to this timeline and provide updates throughout the fulfillment process.

Questions?

If you have any questions about your order or shipping status, please don't hesitate to contact us. We're happy to help.