注: 建议图片大小150px*50px 
丨
注: 建议图片大小150px*50px Views: 0 Author: Site Editor Publish Time: 2026-10-12 Origin: zadim group
For the same number of stops and cabin size, there are notable differences in both equipment cost and total installed price between screw-drive lifts and steel-belt traction lifts with integrated panoramic shafts. Many owners are unclear about where these differences come from.
This article provides a detailed comparison across installation requirements, ride experience, and long-term costs – helping you decide which type best suits your property and usage needs.
Steel-belt traction lifts: The traction machine drives a steel belt, with the car and counterweight suspended at opposite ends of the belt to achieve balance. The motor only needs to overcome the imbalance force. This is a mature technology used in commercial lifts and has the largest market share.
Screw-drive lifts: A motor rotates a helical screw, while a nut fixed to the bottom of the car translates the rotation into vertical movement. The design is simple, requiring no counterweight or machine room, and occupies a small footprint.
The two designs are fundamentally different – traction is a flexible transmission, while screw-drive is a rigid friction drive. This core difference leads to significant variations in long-term performance and cost.
This is the greatest strength of screw-drive lifts and the primary reason many owners choose them.
Comparison | Screw-Drive Lift | Steel-Belt Traction Lift |
Pit depth | Only 50-100mm – can be installed directly on the floor | Typically 130-300mm – some models offer shallow-pit options |
Shaft requirement | No separate shaft – integrated shaft included | Requires a dedicated shaft space – can be concrete or steel structure |
Machine room | Not required | Not required (most home traction lifts are machine-room-free) |
Installation time | 7-10 working days | 4-8 weeks |
Building work volume | Only about 30% of that for a traction lift | Requires shaft and pit preparation |
Key difference: The “pitless” capability of screw-drive lifts makes them the first choice for occupied villas and older-home retrofits. While steel-belt traction lifts are also moving towards “ultra-shallow pits” (e.g., ZADIM Z8000 series requires only 130mm), the 50mm pit advantage of screw-drive lifts remains irreplaceable in extremely tight spaces – such as finished homes where any excavation is impossible.
Comparison | Screw-Drive Lift | Steel-Belt Traction Lift |
Annual maintenance | Approx. £200-300 | Approx. £300-600 |
Energy consumption | Power 2.2-4kW – 40-70% higher consumption | Power 1.5-2.2kW – variable-frequency energy saving |
10-year electricity difference | £200-500 more than traction | — |
Major overhaul cycle | 8-10 years – screw/nut wear, replacement cost £500-1,500 | Steel belt life up to 15 years |
Service life | After 8-10 years, precision may reduce – possible vibration and noise | 20-30 years is typical |
The most notable difference is service life:
Traction lifts use flexible steel-belt or wire-rope transmission, with minimal wear. Even after 20 years, components such as guide rails, the machine, and the belt can be replaced individually – no need for a complete replacement.
Screw-drive lifts involve rigid friction between the nut and screw. After 8-10 years, the precision of the screw-nut fit can degrade, potentially causing vibration and noise. Replacing the screw-nut assembly can cost nearly half the price of a new lift – leaving owners in a difficult position: “too expensive to repair, but reluctant to replace.”
Using the ZADIM Z6000 screw-drive series and the Z2000 steel-belt panoramic series as examples, for a 3-stop, 320kg load, with an integrated panoramic shaft:
Comparison | Z6000 Screw-Drive Lift (premium quality) | Z2000 Steel-Belt Integrated Panoramic Lift |
Key features | Virtually no pit – retrofit-friendly – self-supporting structure – no dependency on a concrete shaft | Shallow pit – permanent-magnet synchronous steel-belt drive – smoother, quieter, faster – integrated aluminium panoramic shaft |
Equipment price | £22,000-28,000 | £18,000-23,000 |
Integrated panoramic shaft (aluminium + laminated glass) | Included in the complete unit | Included in the complete package |
Building work requirement | Pit only 50-80mm – virtually no excavation | Pit ≥120mm – some building work needed |
3-stop total installed reference | £26,000-33,000 | £21,000-27,000 |
Extra per additional stop | £3,000-4,000 | £2,500-3,500 |
Best suited for | Finished homes, impossible to excavate, extremely tight stairwell spaces | New builds with a shallow pit planned – prioritising ride efficiency and quietness |
Breakdown of the price difference:
Core drive unit: The screw-drive assembly is a more complex precision component, contributing to higher equipment costs. The steel-belt machine is more compact and benefits from mature technology, resulting in a lower overall equipment cost.
Building cost trade-off: Screw-drive equipment costs more, but building work is minimal. Steel-belt equipment is slightly cheaper, but if the site does not have a suitable pit, additional building work – such as a raised floor or minor excavation – adds £1,000-2,000.
Shaft structure: Screw-drive lifts include a self-supporting frame as part of the unit. Steel-belt panoramic lifts use an integrated aluminium shaft, with the shaft cost accounted for separately.
For the same specification, screw-drive lifts have a lower initial purchase cost (typically £1,500-3,000 less), but steel-belt traction lifts offer better whole-life cost performance.
Choose screw-drive if: your home is already finished, you cannot excavate a pit, or space is extremely limited (under 900×900mm). In these scenarios, the “pitless + integrated shaft” combination of a screw-drive lift is irreplaceable.
Choose steel-belt traction if: you have the basic installation conditions (a 130mm+ pit, or the ability to raise the floor). In terms of ride smoothness, quietness, energy efficiency, service life, and long-term maintenance costs, steel-belt traction lifts lead on almost every measure of experience.
As industry analysis puts it: “Where shaft conditions permit, a traction lift is the more dependable long-term choice.”
