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The Zeta fixed castor features a medium rectangular plate fitting for secure mounting applications. The housing is constructed from steel sheet, very heavy grade, providing robust structural integrity for demanding industrial environments. The wheel incorporates a polyamide, heavy body with tread material identical with wheel body, ensuring consistent performance characteristics throughout. The wheel is equipped with precision ball bearing technology for smooth operation and enhanced durability. With a wheel diameter of 250 mm, the castor achieves an overall height of 290 mm. Load capacity specifications include dynamic ratings of 800 kg at 4 km/h and 640 kg at 6 km/h operating speeds, whilst the static load capacity reaches 1600 kg, making this castor suitable for heavy-duty material handling and industrial transport applications.
Roll performance
Movement noise
Attrition
Corrosion resistance
Article numbers
Article Number
4688TOP250P63
EAN
4031582443073
Core attributes
Housing type
Fixed castor
Load capacity at 4 km/h
800 kg
Load capacity at 6 km/h
640 kg
Load capacity Static
1600 kg
Overall height
290 mm
Temperature range (Maximum)
80 °C
Temperature range (Minimum)
-40 °C
Overall weight
2.68 kg
Product name
Zeta
Standard
EN12532 - Transport Equipment
Electric conductive
Stainless
Fitting
Fitting type
Medium rectangular plate
Plate hole diameter
11 mm
Plate hole length (Maximum)
105 mm
Plate hole width (Maximum)
80 mm
Plate hole width (Minimum)
75 mm
Plate length
137 mm
Plate width
117 mm
Housing
Colour
Blue passivated
Fork shape
Broad, reinforced
Material
Steel sheet, very heavy
Wheel
Hardness of tread (D)
75 Shore D
Body material
Polyamide, heavy
Tread material
Identical with wheel body
Tread width
50 mm
Diameter
250 mm
Threadguards
Without threadguard
Axle
Screwed with nut
Bearing
Precision ball bearing
special-features-image
Special Features
Non-hazardous materials
Complies with RoHS and REACH regulations. Does not contain polycyclic aromatic carbons or chromium (VI).
Tested quality
Tested in our own laboratory for compliance with European standards.
Solid housing
Made of pressed steel, zinc plated.
Resource-conserving part replacement
Threaded axles allow effortless wheel change.
Uninterrupted use
Swivel bearing with dust ring for continuous, uninterrupted movement.
Reliable traction
Traction-optimised treads for secure grip on wet and slippery floors.
Low wear and tear wheels
Durable wheels with extremely low wear and tear properties.
Optimised directional lock
Directional lock can be adjusted to your requirements to 2x180° or 4x90°.
Extra heavy duty construction
Welded solid steel construction for highest load capacity.
Heavy duty construction
Extra heavy steel housing for high load capacity.
Hardened swivel head
Reinforced and heat-treated ball covers.
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Swivel castor with directional lock 250 mm
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4681UOP250P63

The Zeta swivel castor with directional lock is a heavy-duty mobility solution engineered for demanding industrial applications including airport equipment, automotive original equipment manufacturing, production and platform trolleys, and transport equipment. The castor is fitted with a medium rectangular plate that provides secure and stable mounting to host equipment. The housing is constructed from very heavy steel sheet and incorporates two ball races, reinforced or stainless, within the swivel bearing assembly to ensure smooth rotational movement and extended operational life. The wheel features a 250 mm diameter and is manufactured from polyamide, with the tread material being identical to the wheel body to guarantee consistent wear characteristics and reliable performance. The precision ball bearing integrated within the wheel assembly delivers smooth rolling motion and reduces friction during operation. The overall height of the castor assembly measures 290 mm, providing appropriate ground clearance for most industrial applications. The load capacity specifications are as follows: the static load capacity reaches 1600 kg, whilst the dynamic load capacity is rated at 640 kg when operating at 6 km/h or 800 kg when operating at 4 km/h, allowing engineers to select appropriate operational parameters based on specific application requirements and load conditions.

250 mm
290 mm
800 kg
250 mm
290 mm
800 kg