MineChock™ · NPR Australia
MineChock™: wheel chock for the mining workshop
MineChock™ is a workshop wheel chock with a handle and wheels: you position it standing, without bending or reaching under the truck's tyre. For the field there are one-piece polyurethane chocks in 10 sizes for 400 to 4500 mm tyres. Made by NPR in Australia, distributed in Peru by Endeavant.
Why MineChock™
A workshop chock handled standing up
A traditional wheel chock makes the operator bend over and over and reach under the wheel to place it. MineChock™ is moved with a handle and positioned standing, without going under the tyre, which cuts the risk of lower-back injuries in daily workshop work.
- Fewer back injuriesIt removes repetitive bending.
- No reaching under the wheelThe worker never goes under the equipment's footprint.
- Handle and transport wheelsIt rolls across the workshop without lifting.
- «Do not drive over» plateVisible Spanish-language warning to avoid crushing.
Workshop chock
Two MineChock™ sizes, by tyre width
MineChock™ comes in two sizes by tyre width, designed for workshops and low-slope areas: the standard NPR07999-10 for haul trucks and Size 4 NPR08304-10 for narrow tyres. Both carry a Spanish-language warning plate and are in the NPR catalogue.
MineChock™ standard
34 kg · haul trucks
Universal size for the usual tyre width of haul trucks in the workshop.
MineChock™ Size 4
21 kg · narrow tyres
For equipment with narrower tyres, such as graders and small trucks.
How to use
Three steps to secure the wheel
To secure a wheel, place one MineChock™ on each side of the tyre, straight and flush against its lower face. Always do your own risk assessment first.
- Bring it inPull the handle down, levering on the rear wheels, and push it close to the tyre.
- Set it flushTip it onto its front wheel and leave it straight and flush against the bottom of the tyre.
- Chock both sidesWith both chocks in place the truck is secured. To remove, reverse the motion.
Field chocks
Ten chock sizes, for 400 to 4500 mm tyres
NPR field wheel chocks are one-piece anti-slip polyurethane, far lighter than steel or timber; they do not rot and resist chemicals, salts, fuels, oils and solvents. Pick the chock whose range contains your tyre diameter.
| Size | Part no. | Tyre Ø | Size L × W × H | Weight | Holder |
|---|---|---|---|---|---|
 1.5LW | NPR01895-00 | 400–800 mm | 180 × 115 × 110 mm | 0.7 kg | NPR01945-00 |
 2LW | NPR01180-00 | 400–900 mm | 210 × 200 × 150 mm | 1.6 kg | NPR01951-00 |
 3LW | NPR01181-00 | 900–1400 mm | 340 × 220 × 200 mm | 3.5 kg | NPR02013-00 |
 3.5LW | NPR02097-00 | 1200–1800 mm | 340 × 250 × 225 mm | 6.2 kg | NPR02266-00 |
 3.7LW | NPR01891-00 | 1200–2200 mm | 475 × 305 × 255 mm | 6 kg | NPR01944-00 |
 4LW | NPR01329-00 | 1800–3000 mm | 570 × 340 × 280 mm | 9 kg | NPR02016-00 |
 5LW | NPR02155-00 | 2200–3500 mm | 621 × 343 × 323 mm | 11 kg | NPR02136-00 |
 6LW | NPR00984-00 | 2800–4200 mm | 680 × 337 × 355 mm | 14 kg | NPR02017-00 |
 7LW | NPR05024-00 | 2800–4500 mm | 445 × 385 × 400 mm | 16 kg | NPR05535-00 |
 4/3LW | NPR01476-00 | 2800–4500 mm | 559 × 330 × 280 mm | 8 kg | NPR02029-00 |
Each size has its own NPR mounting holder to keep chocks stored when not in use. Always use an adequate number of chocks.
Field use
How many chocks by slope and load
How many wheel chocks you need depends on ground and load: on level ground both sides of the tyre are chocked, and on a slope the chocks always go on the downhill side, more or fewer depending on whether the machine is loaded or empty.
Level ground
One chock at the centre of the tyre, parallel and flush, front and rear.
Slope · loaded
Four chocks on the downhill side of each tyre.
Slope · empty
Two chocks on the downhill side of the two outer tyres.
In operation
NPR chocks in the workshop and field
MineChock™ won the Innovation & People's Choice Award at the 2022 Queensland Mining Health & Safety Conference. Good practice in wheel chocks for mining; to work under a raised tray, the companion is Tray Support.
FAQ
Wheel chock FAQ
What is MineChock™?+
How is MineChock™ different from a regular wheel chock?+
Which MineChock™ size do I need?+
How do I choose a field wheel chock size?+
How many wheel chocks go on a slope?+
Why polyurethane chocks instead of steel or timber?+
How is MineChock™ assembled?+
Where can I buy MineChock™ wheel chocks in Peru?+
Data sheet and quote
Get the MineChock™ data sheet
We email you the brochure right away. Tell us your equipment and tyre diameters and we will quote the right chock.
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