
Commercial Ordering FAQ
How do I verify that Ruland MCPRSK56-15-A – 15 mm, OD56.0 mm, Aluminum is the correct replacement part for my equipment?
Check the OEM part number (MCPRSK56-15-A) against your equipment nameplate or the manufacturer's repair parts list before ordering. If you are not sure, call the National Boiler Supply order desk at 850-565-3492 and we can cross-reference your equipment model and serial numbers before the order ships.
What are the shipping and freight options for Ruland orders?
Standard parcel orders ship quickly from commercial distribution centers. Shipping is a $35 flat rate on orders under $999, and qualifying orders of $999 or more ship free by ground. Heavy equipment that has to move by LTL freight is quoted after the order is placed and confirmed with you before dispatch.
Can contractors or facility managers request a formal quote or use a Purchase Order (PO)?
Yes. National Boiler Supply works with commercial contractors, mechanical engineers, municipalities, and facility teams. Call 850-565-3492 for a formal quote, bulk pricing, or PO and tax-exempt order processing.
What if this Ruland part is marked Call to Order or needed for an emergency repair?
Call our order desk at 850-565-3492. We can confirm factory lead times right away and arrange expedited air or hot-shot delivery when a repair cannot wait.
Order the Ruland MCPRSK56-15-A 15 mm from National Boiler Supply. Call our order desk at 850-565-3492 for a formal quote or a part number cross-check.
Product Overview
Ruland supplied Controlflex couplings are a lightweight, low inertia, and zero-backlash coupling designed for use in encoders, tachometers, resolvers, and light duty power transmission applications. This keyed clamp style single insert type hub requires the user to mate it with one other hub and one acetal insert. The multiple piece construction allows for a highly customizable coupling that easily combines clamp hubs with inch, metric, keyed, and keyless bores. This hub has a 15mm bore, 5mm keyway, 56.0mm OD, and 15.0mm length. The use of a keyway prevents the coupling from slipping on the shaft if over torqued. This single insert type has higher misalignment capabilities than double insert styles. It is compact and can fit in smaller envelopes than equivalent single beam or double insert Controlflex styles. It has a balanced design and can accommodate speeds of up to 10000 RPM.
Technical Specifications
| Brand | Ruland |
|---|---|
| Manufacturer Part Number | MCPRSK56-15-A |
OEM Part Verification: Confirm Ruland part number MCPRSK56-15-A against your equipment nameplate or parts list before ordering. Our order desk can cross-check it for you.
Order Desk Support: Call 850-565-3492 for formal quotes, lead times, and volume pricing.
Corporate Procurement & PO Processing
Formal Purchase Orders (POs) and tax-exempt ordering are accepted for commercial contractors and institutional facilities.
Apply for Trade Account & Terms →📋 Procurement & Shipping Notice
- LTL Freight Dispatch: Heavy commercial units ship directly via insured LTL carrier with delivery coordination included.
- Project Timelines & Submittals: Need guaranteed delivery dates, formal submittals, or tax-exempt processing?
👉 Request a Commercial Quote or contact our procurement team for direct freight scheduling.