We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Four black PVC casters with steel brackets, two locking, two swivel, 100 mm diameter

Nippon Labs

Nippon Labs CC-BK4 4 inch caster wheels 300 lbs (pack of 4)

SKU CH-8RRV-ZWXZ6 MPN CC-BK4

Four-inch PVC casters with steel brackets, double bearings, two locking wheels and mounting hardware support 300 lbs each

  • TypeChair Wheel
  • SpecificationWheel material: PVC wheel + Steel bracket Wheel diameter: 4i
  • FeaturesHIGH QUALITY DUAL LOCKING - Made of non-marking PVC rubber,
  • Smooth, quiet rolling on non-marking PVC rubber wheels
  • Each caster supports up to 300 lbs with double bearings
  • 360-degree swivel for flexible movement in tight spaces
  • Two wheels include dual locking brakes for secure positioning
  • Mounting kit supplies 16 screws, 16 nuts and two spanners

4-inch PVC caster wheels

Nippon Labs CC-BK4 wheels replace standard office-chair casters with 100 mm PVC tyres on steel brackets. Each wheel carries 300 lbs and uses double ball bearings for smooth, quiet rolling. The pack supplies four wheels, sixteen screws, sixteen nuts and two spanners.

Suits chairs with 64 x 94 mm plates

These casters fit mounting plates measuring 64 by 94 mm with holes spaced 44 by 74 mm and 8 to 12 mm diameter. Two wheels include brakes, two swivel freely through 360 degrees. Buyers whose furniture uses stem mounts or different bolt patterns cannot use this set.

64 x 94 mm plate with 44 x 74 mm hole spacing

The decisive specification is the top-plate geometry: 64 x 94 mm overall with holes centred 44 mm by 74 mm apart and 8 to 12 mm wide. Measure the existing plate before ordering; a mismatch means the wheels will not bolt on.

Highlights

  • Smooth, quiet rolling on non-marking PVC rubber wheels
  • Each caster supports up to 300 lbs with double bearings
  • 360-degree swivel for flexible movement in tight spaces
  • Two wheels include dual locking brakes for secure positioning
  • Mounting kit supplies 16 screws, 16 nuts and two spanners

Specifications

BrandNippon Labs
ModelCC-BK4
TypeChair Wheel
SpecificationWheel material: PVC wheel + Steel bracket
Wheel diameter: 4inch/100mm
Plate size: 64 x 94mm
Hole distance: 44 x 74mm
Hole diameter: 8 x 12mm
Bearing: double bearing
Load capacity: 300 Lbs per Caster
Package list : 2 pcs swivel + 2 pcs brake +16 screws + 16 pcs nuts + 2 spanners
FeaturesHIGH QUALITY DUAL LOCKING - Made of non-marking PVC rubber, these caster wheels are very quiet while rolling, and absorb shock and vibrations. Ball bearing and dual locking bring a max loading capacity and safety.
MAX FLEXIBILITY AND SAFETY - Swivel casters rotate 360 degrees which makes turning the mating equipment possible. It's good for transporting light furniture and displays quietly and safely.
HEAVY DUTY BEARINGS - Steel structures body is extremely hard wearing and resistant to dirt, 300 lbs capacity for each caster, Bearing Heavy Duty.
UNIVERSAL USE - The wheels can be used
Shipping weight2.95 kg
Package size305 × 254 × 76 mm

Questions about this item

Will the 64 x 94 mm plate and 44 x 74 mm hole spacing match my current chair base?

The plate measures 64 by 94 mm with holes spaced 44 by 74 mm and 8 by 12 mm diameter; compare these dimensions to your existing mounting pattern before fitting.

How can I confirm the double bearings and dual locks are operating correctly after installation?

Spin each wheel — it should rotate 360 degrees smoothly and quietly; engage both brakes on the two locking casters and verify the chair stays stationary under load.

Which mounting hardware is included and what must I source separately?

The box contains 2 swivel casters, 2 brake casters, 16 screws, 16 nuts and 2 spanners; no additional fasteners are required for standard installation.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.