HB2050 Adjustable Roller Ball Lock 55mm Backset

The largest of the Halliday + Baillie stand alone mortice locks, the HB 2050, combines a fully adjustable roller ball catch with a high security dead bolt. Designed specifically for use on hinge and pivot doors where pull handles are used rather than a lever handle, the roller ball allows for door control even when unlocked and can be used with any standard Euro cylinder escutcheon. For ultimate flexibility pull handles, door furniture and cylinders are sold separately, enabling you to mix and match to your projects aesthetic.

The high security bolt is a double action 20mm length throw with integrated tungsten carbide pins. Known for its superior hardness and scratch resistance the pins will hold the bolt secure even under sustained force.

Material : Diecast Zinc, Brass, 316 Stainless Steel

Dimensions (faceplate) : 215mm x 24mm Dimensions (case) : 165mm x 85mm

Backset : 55mm

Minimum door thickness : 35mm Suitable for timber and aluminium doors, or steel doors with an integrated lock box.

  • Category
    Latches and Locks
  • Brand
    Halliday + Baillie
  • Designer
    Halliday + Baillie
  • Year
  • Warranty
    5 years
  • Country of origin
    New Zealand
  • Type of use
    Commercial and Residential
  • Care and cleaning
    Easy maintenance
  • Installation
    Minor installation required
  • Assembly
    Tools required

Available in powder coat finishes (EBA, EDB, EFW, EMB, WHT) brushed nickel (BN), black chrome (KC), and satin chrome (SC) as standard finishes.

Other finishes maybe available for custom order only for bulk projects.

Please note: Strike plates ordered seperately. Extended strike plates are available in specific lengths on request at an additional cost. Rebated strike plates are also available. A dual action strike plate is available for swing through doors. For full strike information please see separate data sheets.


The roller ball is milled from 316 marine grade stainless steel, with double adjustment screws. The top screw adjusts the tension and pressure of the roller ball, with the bottom screw adjusting the projection of the roller from the lock body. Irrespective of the door detail the roller ball is designed to firmly seat in the strike plate no matter what the situation.

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Halliday + Baillie has been providing elegant handle solutions and architectural hardware products for over 25 years and designing and making their own hardware for almost two decades.

All our Halliday + Baillie products are proudly designed and manufactured in New Zealand. Support local and buy NZ-made!

Our design encompasses quality, flair, functionality, and longevity. Products are proudly produced in New Zealand, where lower volumes enable careful monitoring with high production quality. Handles may be turned a thousand times daily, so materials and finish are among the highest priorities. Longevity has become the undisputed hallmark of our success.

The range includes door hardware, sliding door hardware (including a full range of flush pulls, end pulls, flush bolts, locking and privacy sets etc), stair rail brackets, door stops, drawer and blind extrusions and wet area vents. 

Halliday + Baillie architectural hardware products look good and feel good, and the team is continually striving for an aesthetic that will stand the test of time.

Besides our products, Halliday + Baillie is the exclusive New Zealand and Australia supplier for the German FSB range and the English Turnstyle Design Ranges of high-quality architectural hardware. Solid bronze, marine-grade stainless steel, and hand-stitched lever handles and knobs are just part of these extensive ranges.