NEWSH140 4.5" X4.5" SINGLE SPRING HINGE
NEWSH140 4-1/2" x 4-1/2" Commercial Single-Acting Spring Hinge
Usually Ships: 1-3 Business Days
The Cal-Royal NEWSH140 is a single-acting, full-mortise, standard-weight commercial spring hinge. Adjustable spring action helps return a compatible swinging door toward its closed position. The manufacturer catalog specifies 4-1/2" height x 4-1/2" open width and .134" leaf thickness.
Practical Uses
- Office and utility-room doors: Add closing assistance where the complete hinge arrangement suits the door and opening requirements.
- Compatible commercial interior openings: Help return a door after someone passes through without assuming the speed control of a hydraulic closer.
- Replacement projects: Replace matching spring hinges after comparing mortises, screw locations, leaf thickness, and barrel clearance.
Everyday example: After carrying supplies through a utility-room doorway, an employee releases the door and the adjusted spring hinges help bring it back toward the frame. The installer checks closing and latch engagement with the actual seals and latch fitted.
Installation and Adjustment
Match the preparation: Full-mortise mounting recesses one leaf into the door and the other into the frame. Verify the 4-1/2" x 4-1/2" size, .134" leaf thickness, corner shape, screw pattern, and reinforcement before ordering or cutting. NEWSH140 is not the narrower 4-1/2" x 4" NEWSH454.
Check the reference drawing: The NEWSH140 drawing shows a 4-1/2" dimension but contains a 4-1/2" x 4" description in its title area. Use the catalog's model-specific size together with the actual supplied hardware and complete drawing; resolve any mismatch before modifying the door or frame.
Select the whole hinge arrangement: Consider door weight, width, height, use frequency, latch resistance, seals, and air pressure. The manufacturer advises using ball-bearing or concealed-bearing hinges when combining ordinary support hinges with spring hinges. Standard-weight commercial classification is not an unconditional heavy-door or high-frequency-service rating.
Install before tensioning: Align the hinge axes and check that the door swings freely. The manufacturer's guide specifies the adjustment head upward and the door closed during adjustment. Follow its illustrated tension-adjusting rod and set-pin procedure, keeping the loaded mechanism controlled. Test after each adjustment and observe the limits supplied with the hardware.
Verify fasteners: The NEWSH140 drawing lists #11 x 1-1/4" wood screws and M5 x 1/2" screws, while the commercial spring-hinge catalog lists #12 x 1-1/4" wood screws and 12-24 x 1/2" machine screws. Confirm the actual supplied screws, countersinks, and frame threads rather than treating these sizes as interchangeable.
Test real closing conditions: Check closing and latching from several opening positions. Correct door sag, rubbing, or strike misalignment separately instead of increasing spring tension to overcome binding.
Problems It Helps Address
- Doors left open after use: Spring force assists return toward closed on a properly fitted opening.
- Closing force that needs refinement: Adjustable tension helps the installer tune the complete hinge arrangement.
- Replacement uncertainty: Published dimensions and installation guidance help identify preparation differences before work begins.
Closing assistance, not hydraulic control: Spring hinges do not provide separate hydraulic closing-speed and latch-speed adjustments and are not door stops. A hinge alone does not guarantee positive latching, acceptable opening force, or suitability for a labeled fire-door assembly. Verify any special opening requirements and the approved complete configuration.
Product Details
- Part number: NEWSH140
- Type: Commercial, single-acting spring hinge
- Mounting: Full mortise, cataloged as template type
- Weight classification: Standard weight
- Catalog size: 4-1/2" high x 4-1/2" open width
- Leaf thickness: .134"
- Material: Catalog lists steel and stainless steel configurations; confirm the base material of the ordered finish
- Quantity reference: This listing is titled “Single Spring Hinge,” while the manufacturer catalog lists two pieces per box. Confirm the selling quantity before assuming an order quantity of one includes two hinges. “Single acting” describes door operation, not package quantity.
Offered Finishes
US1-Matte Black, US10A-Antique Bronze Lacquered, US10B-Antique Bronze Oiled, US15-Satin Nickel, US26-Bright Chrome, US26D-Satin Chrome, US3-Bright Brass, US32D-Satin Stainless Steel, US4-Satin Brass, US5-Antique Brass, and USP-Primed Gray. Plated finish names do not establish solid-brass construction.
