275mm semi-pneumatic wheel assembly suited to compatible zero-turn mower front castors, combining a smooth turf-friendly tread with a complete steel hub, bearing and axle assembly.
Suited to zero-turn mower front castors: Designed for applications where the wheel needs to swivel freely as the mower changes direction. The smooth tyre profile makes it particularly well suited to front castor positions on compatible zero-turn mowers and other lawn and mowing equipment.
Smooth tread helps reduce turf disturbance: The smooth tread has less aggressive bite than a heavily patterned tyre, helping the castor pivot and change direction with less tendency to dig into or scuff the lawn during tight turns.
Semi-pneumatic cushioning: The semi-pneumatic rubber construction provides some cushioning over uneven lawn and ground, helping absorb minor bumps as the mower travels while avoiding the tyre pressure checks and inflation required with a conventional pneumatic tyre.
Complete replacement wheel assembly: Supplied with the tyre, powder coated steel hub, taper roller bearings and axle hardware, making it easier to replace the complete wheel rather than sourcing the main components individually.
Taper roller bearings for smooth rotation: Fitted taper roller bearings support the wheel as it rotates around the axle, helping the front castor roll and manoeuvre during regular mower operation.
110mm hub for mower fork fitment: The hub, also referred to as the boss, measures 110mm wide. Compare this measurement with the space between your existing castor fork arms to confirm the wheel can be installed correctly.
5/8″ axle fitment: Suits a 5/8″ (15.87mm) axle and is supplied with a 5/8″ x 158mm axle bolt. Check the axle diameter, hub width and available fork clearance against your existing wheel before ordering.
Alternative axle size available: For equipment requiring a smaller axle diameter, see the separately available 1/2″ axle version.
275mm semi-pneumatic wheel assembly suited to compatible zero-turn mower front castors, combining a smooth turf-friendly tread with a complete steel hub, bearing and axle assembly.
Suited to zero-turn mower front castors: Designed for applications where the wheel needs to swivel freely as the mower changes direction. The smooth tyre profile makes it particularly well suited to front castor positions on compatible zero-turn mowers and other lawn and mowing equipment.
Smooth tread helps reduce turf disturbance: The smooth tread has less aggressive bite than a heavily patterned tyre, helping the castor pivot and change direction with less tendency to dig into or scuff the lawn during tight turns.
Semi-pneumatic cushioning: The semi-pneumatic rubber construction provides some cushioning over uneven lawn and ground, helping absorb minor bumps as the mower travels while avoiding the tyre pressure checks and inflation required with a conventional pneumatic tyre.
Complete replacement wheel assembly: Supplied with the tyre, powder coated steel hub, taper roller bearings and axle hardware, making it easier to replace the complete wheel rather than sourcing the main components individually.
Taper roller bearings for smooth rotation: Fitted taper roller bearings support the wheel as it rotates around the axle, helping the front castor roll and manoeuvre during regular mower operation.
110mm hub for mower fork fitment: The hub, also referred to as the boss, measures 110mm wide. Compare this measurement with the space between your existing castor fork arms to confirm the wheel can be installed correctly.
5/8″ axle fitment: Suits a 5/8″ (15.87mm) axle and is supplied with a 5/8″ x 158mm axle bolt. Check the axle diameter, hub width and available fork clearance against your existing wheel before ordering.
Alternative axle size available: For equipment requiring a smaller axle diameter, see the separately available 1/2″ axle version.
Description
The SP11X400-625 is a complete 275mm semi-pneumatic wheel assembly suited to compatible zero-turn mower front castors and other lawn and mowing equipment. It features an 11 x 4.00-5 rubber tyre measuring 105mm wide, mounted on a 110mm wide powder coated steel hub with taper roller bearings.
Its smooth tread is particularly useful in a front castor application. Zero-turn mower castors regularly pivot as the machine changes direction, and a smooth tyre has less aggressive tread to bite into the ground during these movements. This helps reduce the tendency for the wheel to dig into or scuff turf during tight turns.
The semi-pneumatic construction also provides some cushioning as the mower travels across lawn and uneven surfaces. Unlike a conventional pneumatic tyre, there is no tyre pressure to monitor or maintain, making it a practical option for mower wheels that see regular outdoor use.
The wheel is supplied as a complete assembly with its tyre, steel hub, taper roller bearings and axle hardware. It suits a 5/8″ (15.87mm) axle and includes a 5/8″ x 158mm axle bolt.
Fitment should be confirmed by measuring the wheel currently fitted to the mower. Compare the overall wheel diameter, tyre width, hub width and axle diameter, then check there is sufficient clearance inside the castor fork for the wheel to rotate and swivel freely.
The SP11X400-625 has a maximum load rating of 110kg per wheel and a maximum operating speed of 15km/h.
Fitment is best confirmed by measuring the wheel currently fitted to your mower rather than relying on the mower make or model alone. Compare the wheel diameter, tyre width, hub width and axle diameter with the replacement wheel, and make sure there is enough clearance inside the castor fork for it to rotate and swivel freely.
For the SP11X400-625, the key measurements are:
Wheel diameter: 275mm
Tyre width: 105mm
Hub / boss width: 110mm
Axle diameter: 5/8″ (15.87mm)
Supplied axle bolt: 5/8″ x 158mm
Using the wheel measuring guide, compare each of these areas with your existing wheel before ordering.
Start with the wheel already fitted to the mower. Measure the overall wheel diameter, tyre width, hub or boss width and axle diameter. You should also check the available width between the castor fork arms and the mounting hardware used by your mower.
Matching the tyre size alone is not enough, as wheels with a similar outside diameter can use different hub widths or axle sizes.
A smooth tread allows the front castor to change direction without an aggressive tread pattern gripping heavily into the lawn. This can help reduce digging, scuffing and turf disturbance when the mower performs the tight turns that zero-turn machines are designed for.
The smooth profile also suits a castor wheel because the wheel needs to swivel freely rather than provide drive traction.
The semi-pneumatic rubber construction provides some cushioning as the wheel travels across grass and uneven ground. This can make it more forgiving over minor bumps while avoiding the tyre pressure checks and inflation required with a conventional pneumatic tyre.
For a mower front castor, this provides a practical combination of cushioning, simple maintenance and a smooth tread suited to frequent direction changes.
The SP11X400-625 is rated to a maximum load of 110kg per wheel and a maximum operating speed of 15km/h. These are operating limits rather than fitment measurements, so the dimensions and axle size should still be checked separately before installation.
Video
Product Code
SP11X400-62
Tyre Size
11x4.00-5
Wheel Material
Semi Pneumatic Rubber
Hub Material
Grey Powder Coated Steel
Wheel Diameter (mm)
275
Tyre Width (mm)
105
Boss Width (mm)
110
Axle Diameter
5/8" (15.87mm)
Axle Bolt Size
5/8" x 158mm
Wheel Bearing Type
Taper Roller Bearing
Weight (kg)
5.3
Tread Type
Smooth
Maximum Load Capacity (kg)
110
Maximum Speed
15 Km/h
Need Stainless Steel?
Our Stainless Excel Series castors offer the same European design pressed metal
frame with a 304 stainless finish and bearings suited to wet and hygiene environments
International Shipping Available
