Bariatric & Heavy-Duty Mobility Equipment NZ: Weight Capacity Explained

A Mobility Plus buying guide, family-run and Kiwi-owned since 2005.

Quick answer: Every piece of mobility equipment carries a safe working load, the maximum user weight the manufacturer has tested it to. Stay under it, with a margin of at least 10 to 15 percent. But weight capacity is only half the job. The other half is seat width, and that is the measurement most people get wrong. A 200kg-rated chair with a 46cm seat is no use to someone who measures 58cm across the hips. Measure both, then match both.

This is one of the most common phone calls we take, and almost always it starts the same way: "Dad is about 140 kilos, what have you got?" The weight is the easy part. The part nobody has thought about yet is how wide he actually is when he sits down.

What does safe working load actually mean?

Safe working load, sometimes written as SWL or max user weight, is the heaviest user the manufacturer has tested and certified the product for. It is not a guess and it is not marketing. It is the number the frame, the welds, the castors, the actuators and the fabric were all engineered around, usually with a test factor applied on top during certification.

Two things people commonly assume, and both are wrong.

It is not the breaking point. Equipment does not snap the moment you go a kilo over. What happens instead is quieter and more dangerous. Frames flex, welds fatigue, castors splay, hydraulic and electric actuators run hot and wear out early. The failure, when it comes, comes without warning, and usually while someone is mid-transfer.

It is not a static number. Safe working load assumes normal use. Sitting down heavily, transferring across from a bed, being pushed over a kerb or a door threshold, all of these load the frame with far more than body weight for a fraction of a second. That is exactly why the margin matters.

It also matters for your warranty and, in a care setting, for liability. Every warranty we supply is void if the equipment has been used above its rated load, and no insurer will look kindly on it either.

How much safety margin should I leave?

Our rule of thumb is 10 to 15 percent, and we will tell you the same thing on the phone every time.

If someone weighs 125kg, a 130kg-rated chair is technically compliant and practically wrong. Weight fluctuates. Winter clothing, a wet towel, a bag on the lap, a caregiver leaning on the armrest during a transfer, all of it adds up. And people genuinely underestimate their own weight, usually by a few kilos, sometimes by a lot more if they have not stood on scales in a while.

At 125kg you want 150kg minimum, and 160kg or more if the equipment will be used many times a day. It costs a little more. It also lasts three times as long.

Weight capacity and seat width are two different problems

This is the bit almost every online listing glosses over, and it is where most of the money gets wasted.

Weight capacity tells you whether the frame will hold. Seat width tells you whether the person will fit. They are set independently by the manufacturer, and a product can be strong and still be far too narrow.

Two real examples from our own range. The Vermeiren Jazz is rated to 130kg and comes in a 50cm seat. The Titan Heavy-Duty 560mm is rated to 204kg with a 56cm seat. That extra 6cm of seat is what makes the difference between a chair someone can sit in for an hour and a chair that rubs their hips raw in twenty minutes.

Get this wrong in either direction and it hurts. Too narrow and it presses on the hips and thighs, restricts circulation, and creates pressure points exactly where you least want them. Too wide and the person slides sideways, loses postural support, cannot reach the armrests to push up from, and over time develops a lean that causes its own problems.

How do I measure hip width while seated?

It takes two minutes and it is the single most useful thing you can do before you ring anyone.

1. Have the person sit upright in an ordinary dining chair, feet flat on the floor, wearing normal indoor clothes.
2. Using a tape measure held horizontally, measure across the widest point, which is usually the hips or the outside of the thighs, not the waist. Keep the tape level and do not pull it tight.
3. Write that number down in centimetres.
4. Add 2 to 3cm for comfort and winter layers. For a wheelchair the person will use outdoors in a jacket, add 3cm.

That total is your minimum seat width. If it lands between two available sizes, always go up, never down. There is a fuller walkthrough on our wheelchair seat width guide.

One extra measurement worth taking while you are there: the narrowest doorway the equipment has to pass through. A 56cm seat wheelchair is 76cm wide overall. Standard New Zealand internal doors are often 76 to 81cm. That can be very tight, and it is much better to find out with a tape measure than with a scraped door frame.

What changes at 150kg, 200kg and 250kg?

These are the real breakpoints in what is available, not marketing tiers.

Up to 150kg. You still have plenty of choice, and most of it looks like ordinary equipment. Standard lift chairs, most rollators and walking frames, mid-range wheelchairs and standard bathroom aids. Prices are normal. Seat widths of 45 to 55cm are common. Nothing about this range needs to be specialist.

150kg to 200kg. The range narrows sharply and gets more expensive. You are now buying purpose-built heavy-duty frames: reinforced steel rather than aluminium, double cross-braces, wider bases, solid tyres. Products get heavier to lift and take up more floor space. Expect to pay roughly double what the standard version costs. Rollators mostly stop being an option above 180kg.

200kg to 250kg and above. This is genuinely specialist territory in New Zealand. Choice is limited, several items are indent or made to order with lead times of weeks rather than days, and some are quoted rather than priced online. Delivery usually needs two people. Above 250kg you are almost always into prescription equipment ordered through an occupational therapist.

What Mobility Plus stocks by weight capacity

Everything below is live on our site now. Prices are in NZD and include GST.

Above 250kg, the Cubro Configura Bariatric rise and recline chair is rated to 254kg with seat widths out to 71.1cm, and there is a bariatric tilt-in-space version alongside it. It is priced on application rather than listed, because the configuration and accessories change the price substantially. Ring us and we will quote it properly.

If it is specifically a chair you are after, our lift chair weight capacity guide lists every chair in the range from 113kg to 254kg, with the seat width and motor count beside each one.

Where our range has gaps, honestly

We would rather tell you this now than have you order the wrong thing.

• Wheelchairs stop at 204kg. The Titan 560mm is the strongest manual chair we hold. Above that we source to order, and lead times run to several weeks.
• Rollators stop at 180kg. If you need a wheeled walker above that, we do not currently stock one. Talk to us before you buy elsewhere, because handle height and frame width matter as much as the rating.
• Over-toilet frames top out at 200kg in what we list online. Wider frames exist in the Viking Maxi range and we can order them, but they are not on the site right now.
• There is no single bariatric collection page yet. The equipment is spread across categories, which is exactly why this guide exists. We are working on it.
• Several heavy-duty lines are indent. The Viking Maxi bathroom range and the Configura chairs come in to order. Allow weeks, not days, and ask us for a date before you commit.

If the thing you need is in one of those gaps, ring us anyway. We can usually source it, and we would rather point you to a competitor who has it in stock than sell you something that is not right.

Funding: what OTs need from us

Bariatric equipment costs more, and that is often the barrier rather than availability. Mobility Plus is a registered vendor with Enable New Zealand, ACC and MSD / Work and Income.

For occupational therapists, we provide formal written quotes at no charge, addressed to the funder, with a quote number, product codes, accessories itemised separately and a validity date. That is the format Enable and Accessable want, and getting it right first time saves a resubmission.

If you need trial equipment before prescribing, ask. We hire lift chairs, wheelchairs and walkers across the North Island, and a trial is often the fastest way to settle a seat width question.

For private buyers, there is plain-English detail in our WINZ and ACC funding guide and our Enable lift chair funding page.

Frequently asked questions

What does safe working load mean on mobility equipment?

Safe working load, or max user weight, is the heaviest user the manufacturer has tested and certified the product for. It covers normal everyday use including transfers. It is not the breaking point, and exceeding it voids the warranty and creates a real risk of sudden failure.

What happens if you exceed the weight limit on a mobility aid?

Usually nothing dramatic at first. Frames flex, castors splay, welds fatigue and electric actuators overheat and wear out early. The failure arrives later and without warning, often during a transfer, which is the worst possible moment. Damage from overloading is not covered by warranty.

Is weight capacity the same as seat width?

No, and confusing the two is the most common bariatric buying mistake. Capacity says whether the frame will hold the weight. Seat width says whether the person will physically fit. A chair can be rated to 200kg and still be far too narrow. Always check both figures before ordering.

How do I measure seat width for a wheelchair or lift chair?

Sit upright in an ordinary chair with feet flat. Measure horizontally across the widest point of the hips or thighs, not the waist, without pulling the tape tight. Add 2 to 3cm for comfort and clothing. That total is your minimum seat width. If you are between sizes, always size up.

What is the highest weight capacity lift chair available in New Zealand?

The strongest we supply is the Cubro Configura Bariatric at 254kg, which is quoted rather than listed. Of the chairs you can order directly, the Pride LC-358XL is rated to 227kg with a 66cm seat, and the Heavy-Duty Electric Lift Chair is rated to 220kg with a seat that adjusts from 54.5 to 67.5cm.

Can bariatric equipment be funded in New Zealand?

Often yes. ACC may fund equipment where the need follows an injury, and Enable New Zealand or MSD may assist where it relates to a disability or health condition. You will generally need an assessment by an occupational therapist and a formal written quote. We are a registered vendor with all three and provide quotes free of charge.

Does bariatric equipment fit through a standard New Zealand doorway?

Often, but not always, so measure first. A 56cm seat wheelchair is around 76cm wide overall, and many internal doors in New Zealand homes are 76 to 81cm. Heavy-duty lift chairs need roughly 92 to 100cm of width plus recline clearance behind. Measure your narrowest doorway and corridor before ordering.

How much safety margin should I allow above my weight?

Ten to fifteen percent as a minimum. Someone at 125kg should be looking at 150kg-rated equipment, not 130kg. Weight fluctuates, clothing and belongings add load, and transfers momentarily load a frame with far more than body weight. The margin is what makes the equipment last.

Not sure what you need? Ring us

Tell us the weight, the seated hip measurement and the narrowest doorway, and we will tell you honestly what fits, what does not, and whether the cheaper option would do the job just as well. Call Kellie on 022 022 9956 or email info@mobilityplus.co.nz. A real person answers.

Our Putaruru showroom is open by appointment if you would like to sit in a chair before deciding, and delivery is free NZ-wide on most of the range.

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