Reference
 |
|
| "Moving Business Forward" |
|
|
Load capacities
The wheels and castors on this site are rated for intermittent use on average floor conditions encountered in most factories and warehouses. The ISO and European Castor Manufacturers (FEM) standards are set out to duplicate these conditions of average use and are used by Lemcol as a guide when rating our products.
Bearing Descriptions
Tapered Roller
These are the highest capacity bearings, used in Super wheels and castors. They are fitted with seals to stop ingress of dirt and grit and only require occasional regreasing. They are fitted to axles that require fine pre-load adjustment.
Spherical Roller Bearings
Capacities equal to that of tapered roller bearings, used in high capacity Super castors and wheels. Fitted with seals to stop ingress of dirt and grit and only require occasional regreasing. Used in applications where there is no preload adjustment on the axle (i.e. in axle retrained by keeper plates).
Precision Ball
These sealed, deep grove ball bearings are "off the shelf", high quality bearings - they are sealed for life and require no maintenance - used in all polyurethane and cast iron wheels, as well as a number of pneumatic wheels.
Double Road Ball Bearings (DRB)
These robust, precision machined, Lemcol designed bearings are used mostly on older model industrial wheels. They are self contained and require regular lubrication.
Roller Bearings
This bearing consists of a caged needle roller running on a case hardened sleeve.
Ball
Underground bearings - usually well shielded but not fully sealed. These bearings are pre-greased and easily replaced. Ideal for medium capacity and low speeds.
Acetal
A plain bearing, acetal polymer bush with oil impregnation. This bearing used in solid rubber wheels is quiet, self lubricating and offers good strength and wear resistance.
Plain
These bearings are the simplest of bearings, formed by the wheel material itself. Generally found in nylon and cast iron wheels, they offer excellent impact resistance. The nylon version is self lubricating, but cast iron is most efficient if regularly lubricated.
Durability
Lemcol castor frames are constructed in one of three ways. The construction techniques influences factors such as lifetime, strength and cost. Use the following table to select the frame best suited to your needs.
Temperature
The Lemcol range of wheels and castors in standard configuration are suitable for temperatures between 0°C and 60°C unless otherwise stated - i.e. the Medium Industrial Phenolic range.
Extreme temperature grease can be fitted on request. The following table gives an indication of most wheel and bearing limitations.
If in doubt contact Active Lifting Equipment
| Wheels |
| Polyurethane |
-30° to 80° |
| Rubber |
-10° to 60° |
| Cast Iron (plain bearing) |
to 300° |
| Cast Iron (ball bearing) |
to 100° |
| Nylon |
-30° to 100° |
| Mineral fibre phenolic |
to 170° |
| Glass fibre phenolic |
to 300° |
Note: For Rubber and polyurethane wheels
Extended high speed towing at or near maximum capacity may cause internal heat build up beyond 80°C
Chemical Resistance
Contact with a number of common chemical compounds can severely limit the lifetime of a castor. The following table indicates how each tyre material is affected by common chemicals. Detailed advice on chemical resistance is available upon inquiry.
| |
Pneumatic
/Steel rim |
Rubber |
Elastic Rubber |
Polyurethane
/cast Iron |
Poly
/Nylon |
Nylon |
Poly-
propylene |
Reinforced Phenolic |
Cast iron |
| Acetic Acid (50%) |
5 |
6 |
5 |
6 |
4 |
4 |
1 |
1 |
6 |
| Acetone |
6 |
1 |
6 |
6 |
6 |
1 |
1 |
1 |
1 |
| Ammonia Solution |
5 |
3 |
3 |
3 |
3 |
3 |
1 |
6 |
1 |
| Bleach Solution |
2 |
4 |
3 |
4 |
4 |
3 |
1 |
6 |
1 |
| Butanol |
6 |
6 |
6 |
3 |
3 |
1 |
1 |
NDA |
1 |
| Carbon Tetrachloride |
6 |
5 |
5 |
4 |
4 |
1 |
4 |
1 |
1 |
| Diesel Oil |
4 |
4 |
4 |
3 |
3 |
1 |
3 |
NDA |
1 |
| Edible Oils |
2 |
2 |
2 |
NDA |
NDA |
1 |
1 |
1 |
1 |
| Ethanol |
5 |
5 |
5 |
4 |
4 |
1 |
1 |
NDA |
1 |
| Hydrochloric Acid (10%) |
6 |
6 |
6 |
6 |
4 |
4 |
1 |
1 |
6 |
| Hydrofluoric Acid (up to 10%) |
6 |
6 |
6 |
6 |
5 |
5 |
1 |
1 |
6 |
| Hydrogen Peroxide (10%) |
2 |
5 |
5 |
6 |
5 |
5 |
2 |
1 |
6 |
| Hydrogen Sulphide |
NDA |
2 |
2 |
4 |
4 |
2 |
1 |
1 |
1 |
| Machine Oil |
6 |
6 |
6 |
NDA |
NDA |
NDA |
1 |
NDA |
1 |
| Methanol |
6 |
6 |
6 |
6 |
6 |
2 |
1 |
NDA |
1 |
| Mineral Oils |
6 |
5 |
2 |
1 |
1 |
1 |
1 |
1 |
1 |
| Motor Oils |
6 |
6 |
6 |
3 |
3 |
NDA |
1 |
NDA |
1 |
| Nitric Acid (10%) |
6 |
6 |
6 |
6 |
6 |
6 |
1 |
6 |
6 |
| Paraffin |
3 |
1 |
1 |
NDA |
NDA |
1 |
1 |
1 |
1 |
| Petrol |
6 |
6 |
6 |
2 |
2 |
1 |
4 |
NDA |
1 |
| Phosphoric Acid (10%) |
6 |
6 |
6 |
6 |
6 |
6 |
1 |
1 |
6 |
| Seawater |
1 |
1 |
1 |
3 |
1 |
1 |
1 |
1 |
1 |
| Soap Solution |
1 |
1 |
1 |
2 |
2 |
1 |
1 |
1 |
1 |
| Sodium Bicarbonate |
1 |
1 |
1 |
2 |
2 |
1 |
1 |
NDA |
1 |
| Sodium Hydroxide Sol. (10%) |
2 |
1 |
1 |
2 |
2 |
1 |
1 |
6 |
1 |
| Sulphuric Acid (up to 50%) |
4 |
6 |
6 |
6 |
6 |
6 |
1 |
1 |
6 |
| Trichloroethylene |
6 |
6 |
6 |
5 |
5 |
2 |
4 |
NDA |
1 |
| Water |
1 |
1 |
1 |
2 |
2 |
1 |
1 |
1 |
1 |
| White Spirit |
2 |
4 |
4 |
NDA |
NDA |
2 |
3 |
NDA |
1 |
Note: NDA - No Data Available
This table is rated from 1 to 6 where 1 indicates a high resistance and 6 indicates a low resistance. |
Mounting Options
 |
4 Swivel Castors
Advantage:
Maximum manoeuvrability in confined spaces
Disadvantage:
Dificult to control over long distances. |
|
 |
2 Swivel Castors
2 Fixed Castors
Advantage:
Good steering control.
Disadvantage:
Lack of manoeuvrability in confined spaces |
|
 |
2 Swivel Castors
Wheeled Axle
Advantage:
Good steering control.
Disadvantage:
Lack of manoeuvrability in confined spaces |
|
 |
Swivel Castors each end
2 Fixed Castors at centre
Advantage:
Good steering control if evenly loaded.
Disadvantage:
Unstable if unevenly loaded. |
|
|
2 Swivel Castors in line
2 Wheeled axle at centre
Advantage:
Easily turned in own length.
Disadvantage:
Unstable high load. |
|
|
Finish |
Lemcol Super and Industrial castor frames are offered in a distinctive metallic painted finish. The remaining series are offered in a zinc coating. Zinc coated frames have proven themselves in the majority of usage situations.
A Chrome Plated finish is available in the Institutional Bolt Hole Series for use where appearance and improved corrosion resistance is essential.
Regular contact with water (and other agents) will cause your castor to corrode. If such contact is likely, we recommend you use the Full Stainless Steel frames offered in selected ranges.
<<Castors Index
<<Wheels Index
<<Materials Handling Index |
Enquiry Form
This is a short form you can submit to request information from Active Lifting:
