Total Lock vs. Top Lock: Which Braked Castor Wheels Do You Actually Need?

Total lock castors brake both the wheel and the swivel action, holding equipment completely still, best for medical trolleys, workbenches, and anywhere full immobilisation matters.

Top lock castors (also called directional or swivel-lock castors) only lock the wheel's rotation while allowing the castor to swivel, making them ideal for carts and trolleys that need to be steered in a straight line without rolling backward or forward. If you need equipment to stay put, choose total lock. If you need controlled, directional movement, choose top lock.

What Are Braked Castor Wheels?

Braked castor wheels are swivel wheels fitted with a mechanical braking mechanism that stops unwanted rolling. They're standard on trolleys, hospital beds, industrial carts, workbenches, and retail equipment, anywhere a piece of mobile equipment needs to stay stationary once it's positioned. Not all brakes work the same way, and choosing the wrong type is one of the most common (and costly) mistakes when specifying castors for a new application.

The two most common braking styles are total lock and top lock, and understanding the difference is the key to getting safe, reliable performance from your equipment.

Total Lock Castors Explained

A total lock castor, sometimes called a full lock or dual lock castor, locks both:

• The wheel rotation (stops the wheel from spinning), and

• The swivel action (stops the castor head from turning)

This means the castor is held completely rigid in one direction, like a fixed wheel, until the brake is released. Total lock is the go-to choice when full stability is non-negotiable.

Best suited for:Medical and healthcare equipment (hospital beds, treatment trolleys)

• Workbenches and static workstations that occasionally need repositioning

• Retail displays and point-of-sale units

• Equipment used on ramps, uneven floors, or near foot traffic

Top Lock (Directional) Castors Explained

A top lock castor only locks the wheel's rotation, the swivel head remains free to turn. This keeps the castor braked against rolling forward or backward, but still lets the trolley or cart be angled and steered when needed for repositioning.

Best suited for:

• Warehouse and industrial trolleys that need directional control

• Carts moved frequently between fixed points

• Applications where full rigidity would make manoeuvring difficult

• Equipment that's parked briefly rather than left stationary long-term

Total Lock vs. Top Lock: Side-by-Side Comparison

Feature	Total Lock Castor	Top Lock Castor
Wheel rotation	Locked	Locked
Swivel action	Locked	Free to swivel
Stability level	Maximum	Moderate
Manoeuvrability when braked	None	Directional steering possible
Common use	Medical, retail, static equipment	Warehouse trolleys, carts
Typical price range (NZ)	From NZ$11.53	From NZ$15.31

How to Choose the Right Brake Castor Wheel

Ask these three questions before you buy:

1. Does the equipment need to be 100% immobile when parked? → Total lock.

2. Does the trolley need occasional directional repositioning even while braked? → Top lock.

3. What's the load capacity and floor surface? Heavier loads and uneven or sloped floors generally favour total lock for extra safety.

For industrial carts, waste and healthcare equipment, or storage trolleys operating on smooth warehouse floors, top lock castors usually offer the best balance of control and safety. For anything requiring guaranteed stillness, medical trolleys, retail units, workstations near staff or the public, total lock is the safer specification.

Frequently Asked Questions

What is the difference between total lock and top lock castors?

Total lock castors brake both the wheel and the swivel, holding the castor completely rigid. Top lock castors only brake the wheel rotation, leaving the swivel free for directional movement.

Which braked castor wheel is best for a hospital trolley?

Total lock castors are generally recommended for medical and healthcare trolleys because they prevent all movement, rolling and swivelling, when the brake is engaged, which is important for patient safety.

Can top lock castors still swivel when braked?

Yes. Top lock castors stop the wheel from rolling but the swivel head remains free, so the castor can still be angled or steered.

Are braked castor wheels available near me in Auckland or across NZ?

Yes. Vartec Industrial, based in Rosedale, Auckland, stocks and supplies braked castor wheels, including total lock and top lock options, for delivery throughout Auckland and nationwide across New Zealand.

How much do braked castor wheels cost in NZ?

Pricing typically ranges from around NZ$5 for small swivel plate castors up to NZ$81 for heavy-duty stainless steel braked castors, depending on wheel size, load capacity, and material.

Do braked castors work on uneven or sloped floors?

Total lock castors are better suited to uneven or sloped floors since locking both the wheel and swivel prevents any unintended movement, offering an extra safety margin over top lock castors.

Final Takeaway

Total lock and top lock castors solve different problems: total lock for maximum stability and safety, top lock for controlled, directional movement while still braked. Match the brake type to how the equipment is actually used, not just its load rating, and you'll get safer, longer-lasting performance from your castor wheels.

Browse the full range of castor wheels, including total lock and top lock options, at Vartec Industrial.