Not all carts are created equal, and neither are the casters that support them. One of the most common—and costly—mistakes in equipment specification is mismatching caster duty rating to actual load requirements. Using light duty casters on heavy loads can cause premature failure, while over-specifying heavy duty casters on simple applications adds unnecessary cost. At China Zhongshan FFIBU Casters Co., Ltd, our FFIBU product range covers both ends of the spectrum, engineered for safety, durability, and value in their intended applications.

What Defines Light Duty Casters?

Light duty casters are designed for low-load, frequent-maneuverability applications. Typically rated from 50 kg (110 lbs) to around 150 kg (330 lbs) per caster, they feature smaller wheel diameters (usually 50 mm–100 mm / 2"–4") and lighter-gauge steel or pressed-steel brackets.

Common Uses for FFIBU Light Duty Casters:

• Office furniture & filing cabinets

• Hospital instrument carts & IV stands

• Retail display racks & stock trolleys

• Food service & housekeeping carts

Advantages:

• Compact, low-profile design

• Easy swivel action with minimal pushing force

• Cost-effective for high-volume procurement

• Available in soft rubber, hard nylon, or PU for floor care

What Defines Heavy Duty Casters?

Heavy duty casters are built for demanding industrial environments where loads are substantial and usage is intensive. Generally rated from 150 kg (330 lbs) up to 1,000+ kg (2,200+ lbs) per caster, they feature larger wheels (100 mm–200 mm+ / 4"–8"+), thick-plate forged or welded steel yokes, and precision ball or tapered roller bearings.

Common Uses for FFIBU Heavy Duty Casters:

• Mold & die carts in stamping plants

• Aircraft & aerospace tooling platforms

• Heavy machinery skids & platform trucks

• Warehouse bulk-handling trolleys & AGV bases

Advantages:

• High load capacity with generous safety margins

• Superior impact resistance on uneven floors or thresholds

• Longer service life under continuous, heavy-use cycles

• Optional dual-wheel, kingpinless, or directional lock designs

Side-by-Side Comparison

How to Choose Correctly

Follow this simple calculation when specifying FFIBU casters:

1. Total Load Weight = (Equipment Dead Weight + Maximum Payload) × 1.25 Safety Factor

2. Minimum Caster Capacity = Total Load Weight ÷ Number of Casters

3. Match the result to the appropriate duty class—light or heavy—and select wheel diameter/materials based on floor condition and ergonomics.

At China Zhongshan FFIBU Casters Co., Ltd, our technical team helps customers calculate accurate load distributions and recommends the optimal FFIBU caster—light or heavy duty—to ensure safe operation, reduced maintenance, and maximum return on investment.

If you'd like, I can now compile a complete FFIBU Caster Product Overview Flyer summarizing Nylon, Rubber, Pneumatic, Stainless Steel, High-Temp, ESD, Soft Rubber, and Heavy/Light Duty lines for your catalog or website. Just let me know!