BEST CB1900RNRP Steel Full Mor...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$17.75
BEST CB1900RNRP Steel Full Mortise Concealed Bearing Hinge with Non-Removable Pin

BEST CB1900RNRP Steel Full Mortise Concealed Bearing Hinge with Non-Removable Pin

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Model: BEST-CB1900RNRP-652-4.5x4.5
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$17.75
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BEST CB1900RNRP Steel Full Mortise Concealed Bearing Hinge with Non-Removable Pin

Professional Medium-Duty Door Hinge Solution

The BEST CB1900RNRP is a standard weight steel full mortise hinge designed for medium weight doors of average frequency use. Featuring concealed LifeSpan® bearings for smooth, silent operation and constructed from durable steel with non-removable pins for enhanced security. The full mortise design provides concealed installation with template screw hole locations compatible with both wood and hollow metal doors and frames.

Professional Features & Benefits

  • Medium-Duty Construction: Engineered for medium weight doors of average frequency use in both residential and commercial applications.
  • Concealed LifeSpan® Bearing System: Maintenance-free operation with no oil, grease, or lubrication required for long-lasting smooth performance.
  • Enhanced Security Design: Non-removable pins (NRP) provide added security by preventing unauthorized hinge pin removal.
  • Universal Template Compatibility: Template screw hole locations work with both wood and hollow metal doors and frames for versatile installation.
  • Durable Steel Construction: Heavy-duty steel construction with stainless steel pins in nonferrous hinges for corrosion resistance and longevity.
  • Professional Installation Features: Reversible flush tips and pins with hole in bottom tip for easy removal when needed during service.
  • Manufacturer Warranty: LifeSpan® limited lifetime warranty for added confidence and long-term protection.

Technical Specifications

  • Bearing Type: Concealed Bearing
  • Commercial/Residential: Commercial
  • Corner Style: Square Corners
  • Department: Door Hardware
  • Duty Level: Medium Duty
  • Hinge Pin Type: Removable
  • Hinge Type: Full Mortise
  • Knuckles: 3
  • Product Category: Door Hinges and Pivots
  • Product Group: Door Hinges and Pivots
  • Product Model: CB1900RNRP
  • Product Subgroup: Surface and Mortise Hinges
  • Product Type: Full Mortise Hinges
  • Series: Architectural Hinges
  • Subcategory: Hinges

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness, stile width, and handing as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
  4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications.
  5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.
  6. Test device operation to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose BEST Quality?

BEST hinge products deliver professional-grade reliability with durable steel construction and concealed LifeSpan® bearing technology for maintenance-free operation. The LifeSpan® limited lifetime warranty provides long-term protection and confidence. Engineered for demanding commercial applications where dependable performance and security are essential.

Product Specs

Subcategory:
Hinges
Series:
Architectural Hinges
Hinge Type:
Full Mortise
Knuckles:
3
Bearing Type:
Concealed Bearing
Corner Style:
Square Corners
Product Group:
Door Hinges and Pivots
Product Subgroup:
Surface and Mortise Hinges
Product Type:
Full Mortise Hinges
Duty Level:
Medium Duty
Commercial/Residential:
Commercial
Hinge Pin Type:
Removable
Product Model:
CB1900RNRP
Product Category:
Door Hinges and Pivots
Department:
Door Hardware

BEST BEST-CB1900RNRP-652-4.5x4.5 – Frequently Asked Questions

1) Is the CB1900RNRP heavy enough for a busy commercial entry door?
No. The CB1900RNRP is a standard weight steel hinge rated medium duty, meaning medium weight doors of average frequency use. For a high traffic entry or a heavy door, step up to a heavy weight hinge such as the Stanley Security CB199 full mortise concealed bearing heavy weight hinge or the McKinney TCA3386 heavy weight 4-1/2 by 4-1/2 full mortise hinge.
2) Will this BEST hinge work on a hollow metal frame as well as a wood door?
Yes. The CB1900RNRP uses template screw hole locations, so the hole pattern suits both wood and hollow metal doors and frames. It is a full mortise hinge, so both leaves get mortised, one into the door edge and one into the frame rabbet, and the barrel is the only part visible when the door is closed.
3) What does NRP mean on the BEST CB1900RNRP and when do I need it?
NRP stands for non-removable pin. On the CB1900RNRP that feature blocks someone from driving the hinge pin out to lift the door off. You need it on any out-swinging door where the hinge barrels sit on the exterior or unsecured side, which covers most exterior commercial entries, stair doors and tenant storage. On in-swinging doors the pins are already protected and NRP is optional.
4) Will this hinge fit a door prepped with square corner hinge pockets?
Yes. The CB1900RNRP has square corners, so it drops into an existing square corner mortise, which is the standard prep on hollow metal frames and machined commercial wood doors. If your existing hinges have rounded leaf corners, the router made a radius pocket and a square corner leaf will not seat without chisel work.
5) Can I use this hinge if I need to run power through the door for an electrified lock?
No. The CB1900RNRP is a mechanical hinge with no wiring provision. For power transfer to an electrified lock or exit device, use an electric through-wire hinge such as the ACSI 5BB1, a 4-1/2 by 4-1/2 five knuckle ball bearing full mortise hinge with concealed electric through-wire, 4 wire 28 gauge. The remaining two hinges on that opening can stay standard.
6) What is the closest equivalent to the BEST CB1900RNRP if non-removable pins are not required?
The Stanley Security CB1960R is a full mortise concealed bearing standard weight hinge in the same Architectural Hinges series and is also rated medium duty, matching the CB1900RNRP concealed bearing construction and duty level without the NRP pin feature. Choose the CB1900RNRP where the door swings out of a secured space and the pin must be protected from removal.
7) What hinge should be used instead of the BEST CB1900RNRP when the door must clear the frame for wheelchair access?
The CB1900RNRP is a conventional full mortise hinge and keeps the door within the opening. For openings that need the full clear width, the Hager 1260 is a full mortise swing clear hinge with a five knuckle plain bearing design rated heavy duty, which swings the door out of the opening.
8) What replaces the BEST CB1900RNRP when the door has to clear thick trim or an obstruction on the frame?
That calls for a wide throw hinge rather than the standard 4-1/2 inch by 4-1/2 inch CB1900RNRP. The Hager WTBB1168 is a 4-1/2 inch by 6 inch full mortise ball bearing wide throw hinge, heavy weight with five knuckles, giving the extra leaf width needed to swing the door past projecting trim.
9) What size and finishes does the BEST CB1900RNRP hinge come in?
The CB1900RNRP is offered in 4-1/2 by 4-1/2 inch, in two finishes: 646 satin nickel and 652 satin chrome on steel. 652 is the usual choice when you are matching existing commercial openings with satin chrome lock trim and closers; 646 satin nickel reads slightly warmer and is more often a matching call than a hardware one.
10) Do concealed bearing hinges need to be oiled or greased?
No. The CB1900RNRP uses BEST LifeSpan concealed bearings, which run maintenance free with no oil, grease or lubrication. That is the practical reason facilities buyers spec concealed bearing over plain bearing on doors that squeak and get complaint calls.
11) What is the difference between a concealed bearing hinge and a ball bearing hinge like the Don-Jo BB74545?
Both carry the door on bearings; the difference is where they sit. On the CB1900RNRP the bearings are concealed inside the knuckles, so the barrel reads as a smooth column. On a ball bearing hinge such as the Don-Jo BB74545, a 4-1/2 by 4-1/2 steel square corner unit, the bearing races are visible as rings between the knuckles. Concealed bearing is the cleaner look on architectural openings; visible ball bearing is the common workhorse.
12) I need the door to swing fully clear of the opening for wheelchair access. Will this hinge do that?
No. The CB1900RNRP is a conventional full mortise hinge, so the open door leaf still blocks part of the clear width. To recover that width, use a swing clear hinge such as the Hager 1260 full mortise swing clear hinge, which carries the door out past the frame reveal when open.
13) How does the BEST CB1900RNRP differ from a ball bearing hinge like the Don-Jo BB74545?
The CB1900RNRP uses a concealed bearing design with three knuckles and square corners. The Don-Jo BB74545 is a 4-1/2 inch by 4-1/2 inch steel full mortise ball bearing hinge with square corners and five knuckles, rated standard duty, so its bearings sit in visible knuckles rather than being concealed within the barrel.
14) Is a plain bearing hinge such as the Hager 1279 a substitute for the BEST CB1900RNRP?
Not on bearing type. The Hager 1279 is a five knuckle full mortise commercial hinge rated medium duty with a plain bearing design, so it matches the CB1900RNRP on duty level but relies on plain bearings rather than the concealed LifeSpan bearings used in the CB1900RNRP. It also carries no non-removable pin feature.
15) Which alternative to the BEST CB1900RNRP suits a corrosive or wash-down environment?
The CB1900RNRP is a steel hinge with stainless steel pins in nonferrous versions. Where the whole leaf needs corrosion resistance, the Don-Jo BB94545 is a 4-1/2 inch by 4-1/2 inch stainless steel full mortise ball bearing hinge with square corners, rated standard duty, matching the square corner prep of the CB1900RNRP.
16) Is the Don-Jo BB74540 a drop-in match for the BEST CB1900RNRP?
Not dimensionally. The Don-Jo BB74540 is a full mortise ball bearing hinge measuring 4-1/2 inch by 4 inch in satin chrome and rated standard duty, while the CB1900RNRP is a 4-1/2 inch by 4-1/2 inch hinge. The narrower 4 inch leaf changes the frame mortise depth, so it is not a direct swap in an existing CB1900RNRP prep.
17) Can the hinge pin be driven out for service if a door has to come off?
Yes, with the right approach. The CB1900RNRP has reversible flush tips and a hole in the bottom tip so the pin can be driven out during service, while the NRP feature keeps it from being pulled when the door is closed and secured. Plan on removing the set screw arrangement before attempting pin removal on a secured door.
18) Are the pins on this BEST hinge corrosion resistant?
Steel construction throughout on the CB1900RNRP, and BEST uses stainless steel pins in its nonferrous hinges for corrosion resistance. For genuinely wet or coastal exterior openings, a full stainless hinge such as the Don-Jo BB94545 4-1/2 by 4-1/2 stainless steel square corner full mortise hinge is the more durable choice.
19) What is the difference between the McKinney TCA2314 and TCA2317 as alternatives to the BEST CB1900RNRP?
Both the McKinney TCA2314 and TCA2317 are square corner five knuckle full mortise hinges measuring 4-1/2 inch by 4-1/2 inch and rated standard duty, so either carries the same leaf size and square corner prep as the CB1900RNRP. They are distinguished by model designation within the McKinney line rather than by size or corner style.
20) Is there a brass-leaf alternative to the BEST CB1900RNRP in satin chrome?
The CB1900RNRP is offered in 652 satin chrome over steel and 646 satin nickel. If a brass base metal is preferred, the Don-Jo BB84545 is a 4-1/2 inch by 4-1/2 inch brass full mortise ball bearing hinge finished in satin chrome and rated standard duty.
How fast can I get the BEST BEST-CB1900RNRP-652-4.5x4.5 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the BEST BEST-CB1900RNRP-652-4.5x4.5 come with a warranty?
Absolutely. The BEST BEST-CB1900RNRP-652-4.5x4.5 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the BEST BEST-CB1900RNRP-652-4.5x4.5?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the BEST BEST-CB1900RNRP-652-4.5x4.5 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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