
Lockwood 3570 Series Extension Spindle 50 to 75mm Door - SP3570-5228
The Lockwood SP3570-5228 Extension Spindle is a replacement split spindle designed for use with the Lockwood 3570 Synergy Series mortice locks. It is used where the door thickness requires the 50 to 75mm spindle configuration.
This spindle is supplied as an individual unit to suit a single furniture plate and is intended for compatible Lockwood 3570 Series mortice lock installations and servicing work.
Typically ships in 5 days.
Key Features
- Replacement split spindle for Lockwood 3570 Synergy Series mortice locks
- Suits 50 to 75mm door thickness applications
- 7.6mm spindle diameter
- 45mm overall spindle length
- Supplied as an individual unit for a single furniture plate
- Useful for servicing, replacement and thicker door configurations
Suitable Uses
- Lockwood 3570 Synergy Series mortice lock installations
- Door thicknesses from 50mm to 75mm
- Replacement of lost, damaged or unsuitable spindles
- Commercial door hardware maintenance
- Australian door hardware service and retrofit work
Full Specifications
Frequently Asked Questions
What door thickness does this spindle suit?
It suits doors from 50mm to 75mm thick.
Is this spindle suitable for all Lockwood mortice locks?
No. The supplied product data states it is designed for the Lockwood 3570 Synergy Series mortice locks.
How many furniture plates does one spindle suit?
It is supplied as an individual unit to suit a single furniture plate.
Additional Information
- Extension spindles should be selected according to confirmed door thickness and furniture configuration.
- Incorrect spindle length can prevent correct handle operation or reduce engagement with the lock hub.
- This part is commonly used when fitting Lockwood 3570 Series mortice locks to thicker doors.
- Because this item is non-returnable, confirm the item code and door thickness before ordering.
Lockwood branded products purchased new in Australia from authorised resellers are covered against defects in materials and workmanship for:
- Mechanical components: 25 years
- Electrical and electronic components: 2 years (excluding batteries)
Lockwood Synergy Mortice Locks Catalogue

Lockwood Synergy Mortice Locks Catalogue
Lockwood Warranty Overview
Lockwood branded products are covered by manufacturer warranties issued by ASSA ABLOY Australia Pty Ltd. Warranty periods vary depending on product type, mechanical components, electrical elements, and finish category.
This overview summarises the structure of Lockwood warranty coverage. Full terms, exclusions and claim procedures are set out in the official Lockwood Warranty document.
Warranty Periods Summary
Finish Coverage Guide
- Everbrass finishes: up to 25 years against corrosion, tarnishing and discolouration.
- Stainless steel, polished stainless steel, chrome plating and anodised finishes: typically up to 10 years.
- Decorative finishes including Antique Copper, Architectural Bronze, Oil Rubbed Bronze, Aged Brass, Polished Brass, Satin Brass and related variants: typically up to 2 years against corrosion.
- Unlacquered brass finishes will naturally age and change appearance over time. This is not considered a defect.
- Tea staining of stainless steel is not covered where cleaning and maintenance have not been followed.
What the Warranty Covers
- Defects in material and workmanship during the applicable warranty period.
- Assessment by ASSA ABLOY to determine repair, replacement with the same or closest equivalent product, or refund of purchase price.
Common Exclusions
- Normal wear and tear.
- Misuse, abuse, accidental damage or use outside published specifications.
- Improper maintenance or failure to follow care instructions.
- Unauthorised modification, repair or use of non-genuine parts.
- Exposure to corrosive environments including coastal air, salt spray, chemicals or pollution.
- Removal, refitment or associated labour charges.
- Products not originally sold in Australia through authorised channels.
Warranty Claim Process
- Retain proof of original purchase.
- Return the product through the original place of purchase where applicable.
- If claiming directly, obtain a case number before returning goods.
- Products must be securely packed and clearly identified.
- Warranty assessment determines repair, replacement or refund.
Australian Consumer Law
Lockwood warranties operate in addition to rights available under the Australian Consumer Law. Goods come with guarantees that cannot be excluded. Customers may be entitled to a replacement or refund for a major failure and compensation for reasonably foreseeable loss or damage.
Where a product fails to meet acceptable quality standards and the failure does not amount to a major failure, the customer is entitled to repair or replacement.