How to Choose a Glass Lifting Machine: Capacity, Reach and Power
Choose a glass lifting machine by matching four things to your work: lift capacity against the heaviest pane (a 2,000 x 3,000 mm / 79 x 118 inch IGU can top 500 kg / 1,100 lb), reach and height to your install, power type (battery or manual) to your site, and vacuum redundancy to your safety case.
| Annealed float glass weight | 2.5 kg per m² per mm (0.013 lb per ft² per 1/64 inch); a 10 mm lite is 25 kg/m² (5.1 lb/ft²) |
|---|---|
| Typical single-glazed lite, 2,000 x 1,500 mm | 10 mm: ~75 kg (165 lb); 12 mm: ~90 kg (198 lb) |
| Insulated glass unit (double), 2,000 x 3,000 mm | Two 6 mm lites: ~180 kg (397 lb); two 10 mm lites: ~300 kg (661 lb) |
| Large structural IGU / triple glazing | Can reach 500 to 900 kg (1,100 to 1,985 lb) per unit |
| Capacity safety margin to specify | Rate the machine at 1.5x to 2x the heaviest pane weight |
| Indoor mini-lifter working capacity band | Roughly 150 to 400 kg (330 to 880 lb) |
| Outdoor / off-road glazing robot band | Roughly 400 to 1,000 kg+ (880 to 2,205 lb+) |
| Vacuum safety standard | Dual independent circuits with reservoir and low-vacuum alarm, per EN 13155 lifting-accessory practice |
Picking the right glass lifting machine comes down to four measurable factors: capacity, reach, power, and safety. Get those right against your actual job and the machine pays for itself in labour saved and panes never dropped. Get one wrong and you either overspend on a unit that will not fit through a doorway, or buy short and stall on the heaviest lift of the project. This guide walks each factor in the order a buyer should weigh them.
Start with capacity: weigh the heaviest pane, then add margin
Capacity is the first filter because it is the one number that cannot be negotiated on site. Work out the weight of the heaviest single piece you will ever lift, not the average. Annealed float glass runs about 2.5 kg per square metre for every millimetre of thickness (roughly 0.013 lb per square foot per 1/64 inch). So a 10 mm lite weighs about 25 kg/m² (5.1 lb/ft²), and a 12 mm lite about 30 kg/m² (6.1 lb/ft²).
Insulated glass units (IGUs) stack that up fast. A double-glazed unit is two lites plus the spacer, so a 2,000 x 3,000 mm (79 x 118 inch) unit built from two 10 mm lites lands near 300 kg (661 lb). Triple glazing and large structural facade units can run from 500 to 900 kg (1,100 to 1,985 lb) per piece. Laminated and low-iron glass are denser still, so price your job from the spec sheet, not a rule of thumb.
Once you have the heaviest pane, rate the machine at 1.5 to 2 times that weight. The margin covers suction efficiency on textured or coated surfaces, off-centre loads, and the simple fact that the next project is usually bigger than this one. A machine sized to the exact pane is a machine sized to be obsolete.
Reach and height: measure the install, not the load
Capacity tells you what the machine can hold. Reach tells you whether it can put the glass where it needs to go. Map three dimensions before you choose:
- Lift height. How high is the top of the tallest opening? Shopfront transoms, second-storey curtain wall, and atrium glazing all demand different mast or boom travel.
- Horizontal reach. Can the machine stand where the wheels can go and still place glass over a sill, planter, or footing? Outreach matters most on facades where you cannot park directly under the opening.
- Access width and weight. Indoor work means doorways, lift cars, and floor loadings. A compact mini-lifter that passes a standard 900 mm (35 inch) doorway is useless if it cannot reach the height, and a long-reach robot is useless if it cannot get through the gate.
Rotation and tilt belong in this section too. Glass rarely arrives in the orientation it installs in. A head that rotates 90 degrees and tilts from horizontal to vertical lets one operator turn a flat-delivered pane into a glazed wall without a second machine or a crew of hands. For raked glazing and sloped rooflights, powered tilt is the difference between a clean set and a fight.
Power: battery, manual, and the site that decides for you
Power type follows the site, not preference. Three honest options:
- Battery electric. The default for most modern glazing. Clean, quiet enough for occupied buildings, and strong enough for the heaviest units. Battery machines suit indoor finishing work and any site where fumes or a power lead are a problem.
- Manual / mechanical vacuum. Hand-pumped or lever-actuated cups for lighter panes and budget-sensitive work. Reliable and simple, with no charge to manage, but the operator does the lifting effort, so they top out well below powered units.
- Off-road / engine-capable platforms. For uneven ground, mud, and outdoor facade work where a smooth floor is a fantasy. These trade indoor manners for traction and outright capacity.
If your work spans a finished interior one week and a muddy facade the next, that split usually points to two machines or a single platform with tracked or all-terrain wheels. Be honest about the ground you actually work on.
Vacuum redundancy and safety: the part you never compromise
A glass lifter is a lifting accessory holding a heavy, fragile, expensive load over people. Redundancy is not optional. Look for two independent vacuum circuits, each able to hold the load alone, fed by a sealed reservoir that keeps suction during a pump or power interruption. A low-vacuum alarm (audible and visual) must warn the operator before the seal degrades to a danger point, and a non-return valve should hold pressure if the system stops.
This mirrors the intent of EN 13155 for non-fixed load-lifting attachments and the duty-of-care expectations of OSHA in the United States and the model WHS regulations in Australia. Ask any supplier to show you the redundancy design, the rated capacity plate, and the inspection and service interval. If they cannot, walk.
How Quattrolifts maps machines to your job
Quattrolifts builds the full range so you can match the machine to the work instead of forcing the work to the machine. For compact indoor sets, the lighter Glassboy and Omni-class units handle panes in the mini-lifter band. For larger IGUs and facade work, heavier and longer-reach platforms in the range carry the load outdoors and on rough ground, with powered rotation and tilt and dual-circuit vacuum across the line. Rather than quote a single spec, we size to your heaviest pane, your access, and your ground conditions, then back it with service and parts in both the United States and Australia.
Browse the full lineup and capacities on the glass vacuum lifters page, compare working bands across the machines range, and send us the heaviest pane size and your site access. We will recommend the right unit and the right margin, with both metric and imperial specs, so the machine you buy is the machine that finishes the job.
Frequently asked questions
How much weight can a glass lifting machine handle?
Working capacities span roughly 150 to 400 kg (330 to 880 lb) for compact indoor mini-lifters and 400 to over 1,000 kg (880 to 2,205 lb+) for outdoor and off-road glazing platforms. Always rate the machine at 1.5 to 2 times your heaviest pane.
How do I calculate the weight of a glass pane?
Annealed glass weighs about 2.5 kg per square metre per millimetre of thickness (0.013 lb per square foot per 1/64 inch). A 10 mm lite is about 25 kg/m² (5.1 lb/ft²); multiply by the pane area, then add the second lite and spacer for an insulated unit.
Battery or manual glass lifter, which should I choose?
Choose battery electric for most modern glazing, occupied buildings, and heavy units. Choose manual or mechanical vacuum for lighter panes and lower budgets where the operator can supply the lifting effort. Site conditions and pane weight decide it, not preference.
What vacuum safety features should a glass lifter have?
Look for two independent vacuum circuits, a sealed reservoir that holds suction during a power or pump interruption, a non-return valve, and an audible and visual low-vacuum alarm. This follows EN 13155 practice and OSHA and Australian WHS duty-of-care expectations.
Can one glass lifting machine work both indoors and outdoors?
Sometimes. An all-terrain or tracked platform can cross finished floors and rough ground, but compact indoor mini-lifters are not built for mud or uneven sites. If your work splits between finished interiors and outdoor facades, plan for either a versatile platform or two machines.