“Central Locking Casters” Is Not Just a Wheel Specification

A buyer receives two quotations for a 5-function electric hospital bed.

Both products have four medical casters.

Both beds can be moved.

Both suppliers describe their products as suitable for hospital use.

But one quotation states:

Central locking caster system.

The other states:

Individual caster brakes.

These are not the same mobility configuration.

The difference is not simply the number or diameter of the wheels.

It affects how the bed is locked, released and maneuvered according to the design of the system.

For buyers comparing an electric hospital bed, the caster specification should therefore answer several questions:

Caster Type → Caster Diameter → Brake System → Pedal Arrangement → Central Locking Function → Steering Function Where Applicable.

This guide explains how hospital buyers, medical equipment distributors and importers can verify these details before approving a sample or placing a bulk order.

What Is a Hospital Bed Central Locking System?

The Basic Principle Is Coordinated Brake Control

On a hospital bed equipped with an appropriate central locking system, the caster and brake arrangement is designed so that a control pedal or linked mechanism can change the operating state of multiple casters according to the system design.

This Is Different From Locking Every Caster Individually

With individual caster brakes, the operator generally needs to engage or release the applicable brake at each caster separately.

Central Locking Changes the Operating Workflow

The user interacts with the linked brake system rather than treating each caster as a completely independent brake point.

The exact operation depends on the caster and brake system used on the specific bed

Central Locking Does Not Mean the Bed Has Only One Brake Component

The Pedal Is Only the User Interface

What the operator sees may be a pedal near the head or foot end of the bed.

But the Complete System Includes More Than the Pedal

Depending on the design, it can involve:

• Medical casters
• Brake mechanisms
• Linkage components
• Control rods or related mechanical parts
• Pedal assemblies
• Directional-lock functions where applicable

Buyers Should Evaluate the Complete System

Do not describe a bed as centrally locked simply because a pedal is visible in a photograph.

The function should be demonstrated and confirmed

1. Start by Confirming the Number and Type of Casters

Four Casters Does Not Describe the Complete Mobility System

Many hospital beds use four casters, but their design can differ considerably.

Ask for the Exact Caster Specification

This Can Include

• Number of casters
• Caster diameter
• Caster material
• Mounting type
• Brake configuration
• Directional-lock capability where applicable

Do not compare hospital bed casters by diameter alone

Why Caster Diameter Is Only One Specification

A Larger Number Does Not Explain How the Caster Operates

Two casters with the same nominal diameter can have different structures and functions.

The Brake System May Also Be Completely Different

For Procurement, Record Diameter and Function Separately

For example:

Caster diameter: manufacturer specification.

Brake system: central locking.

Directional lock: confirm whether included.

This creates a clearer technical specification

2. Understand Individual Caster Brakes

Individual Brakes Are a Simpler Operating Arrangement

In this configuration, the applicable caster has its own braking mechanism.

The Operator Engages the Required Brake at the Wheel

This Configuration Can Be Used on Different Hospital Bed Models

Its suitability depends on the product design and project requirement.

Individual brakes should not automatically be described as inferior

Individual Brakes and Central Locking Serve Different Product Configurations

The Procurement Question Is Not Simply Which One Sounds More Advanced

The buyer should determine which brake system the hospital project requires.

Then Verify That the Offered Product Actually Uses That System

This Is Especially Important in Tender Procurement

If the specification requires central locking, a bed with individual caster brakes should not be represented as the same configuration.

Record the difference clearly

3. Understand Central Locking Casters

A Central System Coordinates the Mobility Controls

The exact mechanical architecture depends on the caster system and bed design.

From the Buyer's Perspective, Focus on the Functional Result

Ask the Manufacturer to Demonstrate

• How the bed is released for movement
• How the braking state is engaged
• Which casters are affected
• Which pedal positions correspond to each operating state
• Whether a directional-lock mode exists

Do not infer these functions from the words “central brake” alone

4. Check Where the Central Brake Pedals Are Located

Pedal Position Is Part of the User Interface

Different hospital bed designs may place operating pedals in different positions.

Buyers Should Look at the Exact Quoted Model

Ask for Clear Photographs From Both Ends and Both Sides

This makes it easier to understand where the operator accesses the brake control.

Catalogue beauty shots may not show the pedal clearly

Do Not Assume Every Visible Pedal Has the Same Function

Hospital Beds Can Have Different Foot-Operated Components

A photograph alone may not explain what a pedal controls.

Ask the Supplier to Label It in the Technical Image or Video

A Useful Demonstration Should Show the Pedal Being Operated

Then show the resulting caster or brake state.

Function demonstration is more reliable than visual assumption

5. Ask Whether the System Has Multiple Pedal Positions

Some Central Locking Systems Can Use Different Operating States

Depending on the specific caster system, the pedal may control more than simple lock and release.

A Directional or Steering Mode May Also Be Available

Do Not Assume This Function Exists on Every Central Brake System

Ask the manufacturer to confirm the exact system used on the quoted bed.

Central locking and directional locking are related but not identical specifications

6. What Is a Directional-Lock or Steering Function?

A Swivel Caster Can Rotate Around Its Vertical Axis

This helps a bed maneuver in different directions.

But During Longer Straight-Line Movement, Unrestricted Swiveling Can Affect Steering Behavior

Some Caster Systems Therefore Include a Directional-Lock Function

When engaged according to the system design, the relevant caster is controlled to support more directional movement.

The exact configuration varies by manufacturer and caster system

Directional Lock Is Not the Same as the Main Brake

This Distinction Is Important

A brake state is intended to secure the bed according to its designed system.

A Directional-Lock State Serves a Different Mobility Function

Do Not Describe Both as “Brake” in the Specification

If the bed provides both functions, record them separately.

Precise terminology helps buyers compare products correctly

7. Do Not Assume All Four Casters Perform the Same Function

A Central Locking System Can Use Different Caster Roles

Depending on the specific system, certain casters may include functions that others do not.

This Is Particularly Relevant to Directional Control

Ask the Manufacturer for the Caster Layout

A simple diagram can identify:

• Caster positions
• Brake function
• Directional-lock caster where applicable
• Pedal positions

A layout drawing can be more useful than four identical-looking product photos

8. Check Whether the Brake Can Be Operated From More Than One Position

Accessibility Matters in Hospital Workflow

Depending on the bed design, control pedals may be accessible from one or more locations.

Do Not Assume a Pedal at One End Means the Same Control Is Available Everywhere

Ask the Supplier to Show the Actual Arrangement

This can be done with:

• Product photographs
• Technical drawings
• Function video
• Sample inspection

The exact configuration should be recorded before ordering

9. Check the Brake System With the Bed in the Complete Configuration

Do Not Test Only an Empty Chassis

The finished hospital bed includes its platform, headboard, footboard, side rails and other specified components.

Where Appropriate, Evaluate the Complete Product

The Buyer Should Understand How the Finished Bed Moves and Locks

This is more representative than looking at the caster component separately.

The caster system belongs to the complete hospital bed

10. Ask for an Unedited Caster and Brake Demonstration Video

A Short Video Can Clarify the System Quickly

Ask the supplier to demonstrate the exact hospital bed model being quoted.

The Video Can Show

• Bed released for movement
• Bed being pushed
• Central brake pedal operation
• Brake state
• Release state
• Directional-lock mode where applicable
• Bed movement after changing the pedal state

Ask for the Original Product Rather Than a Similar Model

Different models may use different caster systems.

Model-specific verification reduces procurement ambiguity

11. Verify the Caster System During Sample Approval

Do Not Approve an Electric Hospital Bed Sample by Testing Only the Motors

Buyers often focus on backrest, leg, height and tilt movements.

The Mobility System Deserves Its Own Check

During Sample Evaluation, Confirm

• Caster specification
• Brake configuration
• Pedal location
• Pedal operating states
• Bed movement when released
• Bed condition when the brake is engaged
• Directional-lock function where specified

Follow the manufacturer's operating instructions during testing

Push the Sample Bed — Do Not Just Look at It

A Caster Is a Functional Component

A photograph can show its appearance.

It Cannot Fully Demonstrate Mobility Behavior

Operate the Bed According to the Intended Method

This gives buyers a better understanding of the complete caster and brake system.

Functional components should receive functional verification

12. Include the Brake Configuration in the Approved Specification

Do Not Record Only “Medical Casters”

This description is too broad for a project where brake type matters.

Use a More Complete Specification

For Example

Caster size: confirmed model specification.

Brake configuration: central locking system.

Directional lock: included or not included according to final configuration.

Pedal arrangement: confirmed according to approved model.

This creates a stronger reference for production

13. Do Not Let a Caster Substitution Become an Uncontrolled Production Change

Casters Are Not Purely Cosmetic Components

A different caster may affect mounting, bed height, mobility behavior and brake-system compatibility.

Changes Should Therefore Be Evaluated Before Production Substitution

For a Bulk Order, Confirm Critical Components

If the approved sample uses one central locking caster system, the production order should follow the agreed configuration unless an authorized change is made.

Component substitution should be controlled, not assumed

14. Caster Changes Can Affect Bed Height

The Caster Sits Between the Chassis and the Floor

Changing caster dimensions or mounting arrangements can affect the complete bed geometry.

This Can Matter When the Project Has a Defined Height Range

Reconfirm Relevant Dimensions After Major Caster Changes

Do not assume the original height specification remains unchanged.

Technical specifications are connected to each other

15. Central Locking Should Be Included in the RFQ When It Is Required

Do Not Write Only “5-Function Electric Hospital Bed”

The function count describes the adjustable movements of the bed.

It Does Not Automatically Define the Caster System

A Better RFQ Separates the Requirements

Bed functions: required electric movements.

Casters: required diameter and configuration.

Brake system: central locking or other specified configuration.

Directional lock: required or not required.

This prevents suppliers from filling in missing specifications differently

Central Locking Is Not One of the “Five Functions”

This Is an Important Technical Distinction

A 5-function electric hospital bed generally refers to its adjustable bed movements.

The Caster Brake System Is a Separate Product Feature

Therefore a Bed Can Have Five Electric Functions and Different Brake Configurations

One model may use central locking casters.

Another may use a different brake arrangement.

Do not calculate brake features as part of the electric function count

Central Brake Is Also Different From the Electric Control System

The Handset or Nurse Control Panel Operates Electric Bed Functions

The caster brake system belongs to the mobility architecture.

These Should Be Specified Separately

A Product Specification Can Therefore Have Separate Sections for

• Electric functions
• Actuator system
• Control interface
• Height range
• Caster system
• Brake system

This creates a clearer technical hierarchy

Does Central Locking Require Electricity?

Do Not Assume “Central” Means “Electric”

A central locking caster system can use a mechanical linked control arrangement depending on the bed design.

The Exact Architecture Should Be Confirmed With the Manufacturer

Electric Bed and Electric Brake Are Not the Same Concept

The bed may use electric actuators for positioning while the caster brake system uses mechanical operation.

Use accurate terminology in technical documents

Does Central Locking Mean All Four Casters Cannot Move?

The Exact Locked State Depends on the Caster System

Buyers should not make assumptions based only on the term “central locking.”

Ask the Manufacturer to Explain and Demonstrate the Specific System

The Procurement Objective Is to Understand the Actual Functional Result

Which casters are affected?

What happens in the brake position?

What happens in the neutral position?

Is there a directional position?

Specific questions are better than generic assumptions

What Does Neutral Mean on a Hospital Bed Caster System?

Some Systems Include a Free-Movement State

In this state, the bed can be maneuvered according to the design of the caster system.

The Exact Pedal Position and Function Depend on the Product

Do Not Publish a Universal Pedal Diagram Unless It Matches the Actual Bed

Different caster manufacturers and bed designs may use different control arrangements.

Use the instructions for the exact model

Why Steering Behavior Matters on a Hospital Bed

A Hospital Bed Is Larger Than a Typical Mobile Cart

Moving it through corridors and around corners requires controlled caster behavior.

Different Caster Modes Can Influence Maneuverability

This Is Why Some Systems Include Directional Control

But the buyer should verify whether the exact bed provides that feature.

Do not advertise a steering function unless it is actually included

Central Locking vs Individual Brakes: Which Should Buyers Choose?

The Answer Depends on the Project Specification

Central locking can provide a coordinated brake-control workflow.

Individual Brakes Use a Different operating method

Neither Configuration Should Be Selected Only From a Marketing Label

Buyers should consider:

• Hospital project requirements
• Intended bed type
• Mobility workflow
• Required caster specification
• Budget
• Maintenance and replacement support

The correct configuration is the one that meets the defined project requirement

Do Not Compare the Two Systems by Price Alone

A Central Locking System Adds More Than a Different Caster

The complete configuration can involve casters, linkages, pedals and related structural components.

This Can Affect the Product Cost

Normalize the Bed Specification Before Comparing Quotations

If one supplier quotes central locking and another quotes individual brakes, the two offers should not be treated as identical configurations.

Compare like with like

What Should Buyers Check in a Tender Specification?

Look for More Than the Words “Four Casters”

A hospital tender may define mobility requirements in more detail.

Extract Each Requirement Separately

For Example

• Caster quantity
• Caster diameter
• Central brake requirement
• Directional-lock requirement
• Pedal accessibility
• Other project-specific mobility requirements

Then ask the supplier to respond line by line

Do Not Mark “Comply” Until the Exact System Is Confirmed

A Catalogue May Use General Language

The actual tender response should correspond to the exact product being offered.

If the Supplier Needs Clarification, Keep the Item Open

A Clear Deviation Is Better Than a False Compliance Statement

This is especially important for hospital project procurement.

Technical transparency reduces problems later in the project

How Should Distributors Present Central Locking in a Product Catalogue?

Use Specific Language

Avoid vague claims such as:

“Advanced wheels.”

Describe the Actual Configuration Instead

For example:

Medical casters with central locking system.

If Directional Lock Is Included, Identify It Separately

Do not combine several functions into one undefined phrase.

Clear specifications help overseas buyers compare products

Should Buyers Ask for the Caster Brand?

Component Identification Can Be Useful for Some Projects

Especially when the buyer has defined component requirements or long-term replacement planning.

But Brand Name Alone Does Not Replace Technical Verification

Ask for the Relevant Specification

Confirm compatibility with the complete hospital bed.

A recognizable component name is not a substitute for an approved system configuration

How Should Central Locking Be Checked During Bulk Inspection?

The Inspection Should Refer Back to the Approved Specification

First confirm that the production beds use the agreed caster and brake configuration.

Then Follow the Defined Inspection Process

Relevant Checks Can Include

• Caster appearance and specification
• Pedal arrangement
• Brake operation
• Release operation
• Directional-lock function where specified
• General bed mobility according to the approved configuration

Inspection should verify the approved product rather than create a new requirement

Do Not Replace Central Locking Casters With Visually Similar Casters Without Confirmation

Appearance Does Not Prove Compatibility

A replacement caster may look almost identical but differ in mounting, brake interface or directional function.

The Linked System Makes Compatibility Particularly Important

Use the Correct Part Identification

For replacement and after-sales service, confirm the component with the manufacturer or qualified supplier.

Do not select replacement casters by diameter and appearance alone

Ask About Spare-Part Identification Before the Bulk Order

This Does Not Mean the Buyer Needs to Purchase a Large Spare Inventory Immediately

The first objective is to understand how the system is supported.

Ask Whether the Manufacturer Can Identify

• Compatible caster
• Brake-system components where applicable
• Pedal components where applicable
• Model reference
• Replacement instructions or service information

This Can Make Future After-Sales Communication Easier

Especially for overseas distributors managing installed hospital beds.

Technical support begins with correct component identification

Electric Hospital Bed Central Locking System Checklist

Before Ordering, Confirm These 12 Points

• 1. How many casters does the bed use?
• 2. What is the caster diameter?
• 3. What caster type is supplied?
• 4. Does the bed use individual brakes or central locking?
• 5. Where are the brake pedals located?
• 6. How many operating pedal positions are provided?
• 7. What does each pedal position do?
• 8. Is a directional-lock or steering function included?
• 9. Which caster provides directional control where applicable?
• 10. Has the system been demonstrated on the exact quoted model?
• 11. Is the same system included in the approved production specification?
• 12. Can compatible replacement components be identified for future service?

These questions turn “central locking casters” into a verifiable technical specification

What Evidence Should Buyers Request?

Use More Than One Type of Product Information

A technical datasheet can identify the specification.

A Photograph Can Show the Hardware Arrangement

A Video Can Demonstrate the Function

A sample can provide direct product verification.

Different evidence answers different questions

For Important Projects, Combine Them

Specification → Photo → Video → Sample Verification → Final Production Requirement.

This provides a stronger technical trail than relying on a catalogue sentence alone

Central Locking Is a Separate Technical System Within the Electric Hospital Bed

An electric hospital bed is not defined only by its motors and adjustable functions.

Its mobility system is another important technical layer.

For professional buyers, the correct comparison is not:

“Does the bed have wheels?”

It is:

What Casters → What Diameter → What Brake Architecture → What Pedal Arrangement → What Operating States → Is Directional Lock Included → Has the Exact System Been Verified?

This distinction is especially important when comparing electric 5-function hospital beds for hospital projects, tenders and distributor product ranges.

A bed with four individual caster brakes and a bed with a coordinated central locking system should not be treated as technically identical simply because both products have four wheels.

Hebei Heyuan Medical Equipment Co., Ltd. manufactures electric 5-function hospital beds, electric 3-function hospital beds, ICU hospital beds, manual hospital beds and related medical furniture for international distributors and healthcare projects.

Buyers can review our electric hospital bed range for different functional, caster and brake configurations.

For central locking hospital bed specifications, electric hospital bed configurations, OEM and ODM requirements or bulk quotations, please contact Heyuan Medical with your required functions, quantity and destination market.