Dormakaba Dorma Top Centre 8066 Lower Portion (DO8066L)
The Dormakaba DO8066L is the lower portion for the Dorma Top Centre 8066 used on double action doors in Dorma BTS floor spring systems. It combines a frame portion with an adjustable pin for deeper profiles and a door portion with a needle bearing for smooth pivoting.
Key Features
- Lower portion for the Dorma Top Centre 8066 assembly used on double action doors.
- Needle bearing design to support smooth door movement in high-cycle openings.
- Steel construction for heavy-duty commercial door applications.
- Frame portion includes an adjustable pin for deeper profiles up to 16 millimetres.
- Option to supply the top centre assembly with pins extended by 10 millimetres for deeper profiles.
- Maximum supported door weight up to 300 kilograms (when used in a compatible system).
Specifications
- Item Code: DO8066L
- Product: Dorma Top Centre 8066 Lower Portion
- Manufacturer Reference: 46020047
- Suits: Dorma BTS series floor spring systems
- Door Type: Double action doors
- Bearing Type: Needle bearing
- Material: Steel
- Profile Adjustment: Adjustable pin for deep profiles up to 16 millimetres
- Extended Pin Option: Pins extended by 10 millimetres can be supplied for deeper profiles
- Maximum Door Weight: 300 kilograms
What's In The Box
- 1 × Dorma Top Centre 8066 lower portion (DO8066L)
Suitable Uses
- Replacement or service part for double action doors fitted with Dorma BTS floor spring systems.
- Commercial entry doors in aluminium, glass, or framed door systems where a top centre assembly is specified.
- Installations requiring an adjustable pin arrangement for deeper profile door preparations.
Dimensions
Frequently Asked Questions
- Is this the complete top centre assembly?
No. DO8066L is the lower portion of the Dorma Top Centre 8066 assembly. - What floor spring range does this suit?
It is listed as suiting the Dorma BTS series floor spring systems. - What should be checked during installation or replacement?
Confirm the door preparation depth and alignment. Misalignment between the top centre and floor spring spindle can cause binding and early bearing wear.
Additional Information
- This part is typically used where the door top rail or frame profile depth requires adjustment to achieve correct pivot alignment.
- If the door has a deeper profile than standard preparation, the extended pin option (plus 10 millimetres) is commonly used to avoid poor engagement.
- Needle bearings are commonly chosen for high-cycle commercial doors because they handle side loading better than plain bushings when the door is correctly aligned.
