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Background:

Our standard wheels and castors have a temperature range of 5°C to 60°C (41°C to 140°F). Within this range our products work normally for their full working life. For applications with temperatures outside this range we make specialised high temperature wheels designed to withstand temperatures of baking ovens.

 

High temperature use:

The customer must specify the temperature and type of application before ordering to ensure that the appropriate wheel type is selected. As temperatures increase wheels become weaker and this lowers the load capacity. In static (non-moving) applications with sustained high temperatures over long periods of time the material will begin to deteriorate, which shortens the working life of the wheel. Fallshaw make three different wheel types designed specifically for use in high temperature environments. These specialised wheels use standard lithium complex grease (STABUTHERM® GH 461) which has excellent water resistance (24hrs at 90°C), bearing retention and long life.

 

1) Glass filled Nylon 150 - 210°C (300 to 410°F):

The best choice for Hospitality based applications such as 'food baking' ovens. It can withstand sustained high temperatures and is gentle and quiet on most floor surfaces. Fibreglass reinforced nylon wheels are the preferred wheel for extended periods of up to 210°C (410°F) (assuming most of their life is spent outside the oven), and for short periods up to 230°C (446°F).

 

2) Phenolic 100 - 300°C (570°F)

Phenolic is more brittle than Glass Filled Nylon and it has a shorter life cycle but can go up to very high temperatures. Phenolic is a good choice for light duty Industrial applications with very high temperatures such as ovens used for curing paint. The load capacity decreases from 125kg at 100°C (212°F) to 40kg at 300°C (570°F) therefore it is very important to ensure that the load capacity of the trolley fits within the appropriate temperature and load capacity. Phenolic wheels (with special inorganic fillers and PTFE bushes) are preferred for extended periods up to 280°C (536°F) assuming most of their life is spent outside the oven and for short periods up to 300°C (572°F). These have a thick cross section, but are more brittle than either nylon or ordinary grades of Phenolic. WARNING: Phenolic wheels are not suitable for medium duty applications or applications where wheels are subjected to impact such as when a trolley is rolled down steps.

 

3) Cast Iron 200 - 400°C (390 - 725°F):

The best choice for Industrial based applications such as 'paint curing' ovens and also for use in sustained high temperature environments. It can withstand extreme high temperatures as well as higher load capacities than all other wheel types. Cast Iron wheels do not have bearings. They have a plain bore fitted with an axle spacer that is lubricated with high temperature grease. This grease can be used up to 230°C (446°F) for long periods. For temperatures that exceed 230°C (446°F) a more exotic grease is required. The Production Manager must be notified of this prior to placing the order and the customers required temperature noted on the picking slip once the order is placed. For sustained high temperature use, we offer a range of cast iron wheeled castors used with high temperature grease. WARNING: Cast Iron is heavy, noisy and may damage concrete floors and other floor surfaces.

Baking Ovens - Food & Paint

In a commercial context, oven baking is a highly repetitive process which means that our wheels are used in baking ovens again and again and again. From the table below you see that in a food baking oven we get temperatures from around 150°C up to 260°C with (occasional) water vapour present.

 

BAKING TEMPERATURE & TIMES (TYPICAL)

Type of food

Degrees °C

Minutes

Macaroon

150

20

Madeira Cake

175

55

Rye Bread

185

50

Sponges

190

15

Farm Bread

205

40 moist

Crusty Rolls

220

20 moist

Pasties

230

15

Cinnamon Log

245

10

Apricot Slice

260

30

 

OVEN THERMOSTAT DESCRIPTIONS (TYPICAL)

Approx Thermostat Setting °C

Description

100

Cool

120

Very slow

150

Slow

160

Moderately slow

180

Moderate

190

Moderately hot

200

Hot

230

Very Hot

Over 230

Extremely hot

 

Low temperature use:

Below 5°C you must specify temperature of use at the time of ordering. Below 5°C (41°F) wheels begin to stiffen quickly, and will soon freeze the bearings so that neither the castor swivels nor the wheels revolve. If specified at the time of ordering, we use special aeronautical grease which is a synthetic oil with a microgel thickener. This is compounded for use down to -30°C (-86°F), and will need to be refreshed every 6 - 12 months, but will continue to work effectively in chilling rooms, freezing stores and outdoor winter use in northern countries where ordinary greases would be useless. As the temperature becomes lower, the softer rubber and polyurethane treads on our wheels become less elastic. For example, the polyurethane used on the 'H' series (i.e HUR100) slowly stiffens from 20°C (68°F) down to -20°C (-68°F), but then rapidly stiffens until at -50°C (-122°F) it becomes brittle. As temperature goes below 5°C (41°F), nylon can become brittle (particularly if it is kept for long periods in the very dry air in freezing rooms). At such times we recommend fibreglass reinforced wheel, which can be used down to -30°C (-86°F).



High/Low Temperature
M series

Note:

M series have 1/2 I.D bore reduced to 8mm with axle spacer


Australia.png

bearing type

Bearing Type

load capacity

Load Capacity

kg / lb
diameter width

Diameter x Tread Width

mm / inches
hub width x bore

Hub Width x Bore

mm / inches
Fork Options

Fork Type

fork type

Fork Type

High Temp grease and no seal
/ or Low Temp grease with seal

Plate
Swivel

plate swivel

Bolt Hole
Swivel

bolt hole total brake

Plate
Fixed

plate fixed
Wheel Only /MZP Iso plate
/MZPN NA Plate
/MZH /MZF Iso plate
/MZFN NA Plate
 

Nylon glass reinforced

(lighter hub)

NylonGlass.png Plain

70kg @ 150°C

155lb @ 300°F

75x32

3x11/4"

41x12

15/8"x1/2

MHH75 High Temp

MHH75/MZPHT

MHH75/MZPNHT

MHH75/MZHHT

MHH75/MZFHT

MHH75/MZFNHT

Low Temp

MHH75/MZPLT

MHH75/MZPNLT

MHH75/MZHLT

MHH75/MZF

MHH75/MZFN

Plain

80kg @ 150°C

175lb @ 300°F

100x32

4x11/4"

41x12

15/8"x1/2

MHH100 High Temp

MHH100/MZPHT

MHH100/MZPNHT

MHH100/MZHHT

MHH100/MZFHT

MHH100/MZFNHT

Low Temp

MHH100/MZPLT

MHH100/MZPNLT

MHH100/MZHLT

MHH100/MZF

MHH100/MZFN

Cast Iron

(high temp)

CastIron.png Plain

100kg @ 200°C

220lb @ 390°F

75x28

3x11/10"

41x12

15/8"x1/2

DCI75 High Temp

DCI75/MZPHT

DCI75/MZPNHT

DCI75/MZHHT

DCI75/MZFHT

DCI75/MZFNHT

Phenolic

(high temp)

MWW100.tif

PTFE

(Teflon) Plain

125kg @ 100°C

275lb @ 212°F

100kg @ 250°C

220lb @ 480°F

40kg @ 300°C

90lb @ 570°F

100x35

4x13/8"

41x12

15/8"x1/2

MKT100 High Temp

MKT100/MZPHT

MKT100/MZPNHT

MKT100/MZHHT

MKT100/MZFHT

MKT100/MZFNHT

High/low temperature
J series

Note:

J series wheels have 20mm I.D bore reduced to 10mm with axle spacer

Australia.png
bearing type

Bearing Type

load capacity

Load Capacity

kg / lb
diameter width

Diameter x Tread Width

mm / inches
hub width x bore

Hub Width x Bore

mm / inches
Fork Options

Fork Type

fork type

Fork Swivel Librication

High Temperature Grease and No seal
/ or Low Temperature Grease

Plate
Swivel

plate swivel

Bolt Hole
Swivel

bolt hole swivel

Plate
Fixed

plate fixed
Wheel Only /JZP /JZH /JZF
 

Nylon glass reinforced

(heavier hub)

JHH100.tif Plain

100kg @ 210°C

220lb @ 410°F

100x32

4x11/4"

45x20

13/4"x20mm

JHH100 High Temp JHH100/JZPHT JHH100/JZHHT

JHH100/JZFHT

Low Temp JHH100/JZPLT JHH100/JZHLT

JHH100/JZF

Cast Iron

(high temp)

JCI100.tif Plain

230kg @ 400°C

505lb @ 952°F

100x38

4x11/2"

45x20

13/4"x20mm

JCI100 High Temp JCI100/JZPHT JCI100/JZHHT

JCI100/JZFHT

Low Temp JCI100/JZPLT JCI100/JZHLT

JCI100/JZF

High/Low Temperature
O series

Note:

O series wheels have 20mm I.D bore reduced to

Australia.png
bearing type

Bearing Type

load capacity

Load Capacity

kg / lb
diameter width

Diameter x Tread Width

mm / inches
hub width x bore

Hub Width x Bore

mm / inches
Fork Options

Fork Type

fork type

Fork Type

High Temp grease and no seal
/ or Low Temp grease with seal

Plate
Swivel

plate swivel

Plate
Fixed

plate fixed
Wheel Only /OZP /OZF
 

Nylon glass reinforced

(heavier hub)

JHH100.tif Plain

200kg @ 210°C

440lb @ 410°F

150x40

6x19/16"

60x20

23/8"x20mm

OHH150 High Temp

OHH150/OZPHT
ISO plate

OHH150/OZPNHT
NA plate

Information

OHH150/OZFHT
ISO plate

OHH150/OZFNHT
NA plate

Information
Low Temp

OHH150/OZPLT
ISO plate

OHH150/OZPNLT
NA plate

Information

OHH150/OZF
ISO plate

OHH150/OZFN
NA plate

Information

Cast Iron

(high temp)

JCI100.tif Plain

250kg @ 400°C

550lb @ 725°F

150x50

6X2"

60x20

23/8"x20mm

WCI150 High Temp

WCI150/OZPHT
ISO plate

WCI150/OZPNHT
NA plate

Information

WCI150/OZFHT
ISO plate

WCI150/OZFNHT
NA plate

Information

Low Temp

WCI150/OZPLT
ISO plate

WCI150/OZPNLT
NA plate

Information

WCI150/OZF
ISO plate

WCI150/OZFN
NA plate

Information