How and where to use guide
J8500GM 102mm x 76mm x 2.7mm Gun Metal Ball Bearing Hinges Pair
Typical applications and installation
These ball bearing hinges are suitable for internal and external doors in commercial premises, offices, retail environments, and residential properties. They perform particularly well on frequently used doors such as entrance doors, corridor doors, and fire-rated door sets. Install the hinges vertically on the door frame and door edge, ensuring the hinge knuckle faces outward. Use the pre-drilled screw holes and fix securely with appropriate screws suitable for your frame material. For doors at the maximum 80kg weight limit, always fit a pair of hinges and ensure they are positioned at least 150mm from the top and bottom of the door.
- Suitable for doors up to 80kg in weight
- Ideal for high-traffic commercial and residential applications
- Ball bearing design eliminates binding and stiffness
- Grade 11 steel construction provides heavy-duty performance
- Gun metal finish offers corrosion resistance
Maintenance and on-site care
Ball bearing hinges require minimal maintenance but benefit from occasional inspection. Check that screws remain tight, particularly on doors in frequent use, as vibration can gradually loosen fixings over time. If hinges become stiff or noisy, apply a light machine oil to the ball bearing mechanism rather than heavy grease, which can accumulate dust. Wipe away excess oil with a clean cloth. The gun metal finish is naturally resistant to corrosion, but in coastal or damp environments, occasional cleaning with a dry cloth will maintain appearance and prevent salt or moisture build-up.
- Check screw tightness regularly on high-traffic doors
- Apply light machine oil to ball bearings if operation becomes stiff
- Avoid heavy grease which attracts dust and debris
- Wipe clean with a dry cloth in damp or coastal locations
Limitations and important considerations
These hinges are rated for doors up to 80kg maximum. Do not exceed this weight limit, as overloading will compromise the ball bearing mechanism and reduce hinge lifespan. The 102mm x 76mm dimensions suit standard UK door frames; measure your existing hinges or frame recess before ordering to ensure compatibility. Always fit a pair of hinges minimum; additional hinges may be required for very heavy or tall doors. These hinges are not suitable for doors requiring specialised hardware such as soft-close or hold-open mechanisms.
- Maximum door weight 80kg — do not exceed this rating
- Verify frame recess dimensions match 102mm x 76mm before installation
- Always use a minimum pair of hinges
- Not compatible with soft-close or hold-open devices