
Dormakaba Severe Duty Ball Bearing Butt Hinge – 100 mm x 75 mm x 3.2 mm
Dormakaba severe duty ball bearing broad butt hinge designed for high-load applications on timber or metal doors used with timber or pressed metal frames. The increased hinge thickness provides additional strength for heavy or frequently used doors.
Key Features
- Severe duty hinge construction for higher door weights and frequent use.
- Ball bearing design supports smooth door operation under load.
- Loose pin configuration allows hinge separation for installation or maintenance.
- Manufactured from Grade 304 stainless steel for commercial environments.
Fire Rated
- Approved for use on fire door assemblies in accordance with AS1905 Part 1 when installed as part of a compliant doorset.
Specifications

What's In The Box
- 20 x Dormakaba severe duty ball bearing butt hinges
- (8) x 4.8 x 35 mm stainless steel wood screws per hinge
- (4) x M5 x 12 mm stainless steel metal thread screws per hinge
Suitable Uses
- Heavy commercial timber or metal doors
- Fire doors when specified with compliant door assemblies
- Doors fitted with closers or subject to high usage
Download PDF Resources
Frequently Asked Questions
What makes this hinge “severe duty”?
The increased 3.2 mm hinge thickness provides additional strength for heavier doors and high-traffic installations.
Is a loose pin hinge suitable for external doors?
Loose pin hinges are generally not recommended for external or security-sensitive doors unless additional security measures are in place.
Are fixings supplied with the hinge?
Yes, stainless steel fixing screws suitable for timber and metal frames are supplied.
Additional Information
- Loose pin hinges allow easier door removal for maintenance but should be assessed carefully for security applications.
- Severe duty hinges are commonly specified on tall or solid core doors to manage increased load.
- Hinge quantity and placement should be determined in line with door manufacturer and fire compliance requirements.
dormakaba Warranty
dormakaba Australia Pty Ltd (ABN 14 067 969 466) provides the following warranty on all dormakaba branded products sold in Australia. This warranty is in addition to, and does not limit, your rights under the Australian Consumer Law.
Warranty Summary
How to Make a Claim
- Report the defect promptly. Contact Terry's Tradies Pty Ltd and its associated websites, trading names, and subsidiaries (including Gold Coast Smart Locks) as your point of sale in the first instance. Claims must be lodged no later than 1 month from the date the defect becomes obvious.
- Prepare your documentation. You will need proof of purchase (invoice or receipt), the date of delivery or installation, your name and address, and any maintenance records relevant to the product.
- Make the product available for inspection. dormakaba requires adequate access to the goods, fittings, and fixtures to assess any warranty claim and carry out repairs. If no fault is found, dormakaba's standard costs for inspection, service, and testing apply.
- Warranty work is conducted during normal business hours � 8:00am to 5:00pm, Monday to Friday.
Note: The expense of making a warranty claim (including transport and access costs) is borne by the purchaser.
Exclusions
This warranty does not cover:
- Damage or defects caused by misuse, abuse, neglect, or failure to follow dormakaba's selection, installation, and maintenance instructions
- Fair wear and tear
- Damage arising from installation not carried out by dormakaba or its authorised agents
- Damage caused to the structures the product is installed in, where installation was not by dormakaba or its authorised agents
- Damage caused by circumstances beyond dormakaba's control
- Defects within acceptable industry variances
- Products used other than for their intended purpose
- Damage from exposure to abnormal conditions, including but not limited to extreme temperature, water, fire, humidity, pressure, or stress
- Products that have been modified, built on, or repaired by a third party
- Products not maintained in accordance with dormakaba's care, cleaning, and maintenance instructions (as amended from time to time on the dormakaba website)
- Routine maintenance items (the purchaser's responsibility)
- Products installed, maintained, or operated other than in accordance with dormakaba's instructions
- Overhaul, replacement, or repair work carried out prior to dormakaba's approval of a warranty claim
Important Notes
In Australia, our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure, and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have goods repaired or replaced if they fail to be of acceptable quality and the failure does not amount to a major failure. Nothing in this warranty limits or excludes these statutory rights.
dormakaba reserves the right to replace defective parts with components of similar quality, grade, and composition where an identical part is unavailable. Refurbished parts or goods of the same type may be used. For discontinued or unavailable products, dormakaba may substitute an equivalent current product. All products replaced under warranty become the property of dormakaba.