3-wheel vs 4-wheel wall grinder: which should you stock?
Three hundred grams separate Cirelto's two dust-free wall grinder lines — and picking between them is the first stocking decision a wholesale buyer importing from China faces. Same 750W motor, same speed window, same dust collection. Here is what the wheel count actually changes.
by peter zhang · sep 17, 2026
the 300-gram rule
The 3-wheel CI-G750 (3.6 kg) is the lighter all-rounder for mixed walls and corner work; the 4-wheel CI-G750B (3.9 kg) tracks flatter on wide passes. Motor, speed range and dust collection are identical — most distributors stock both and let crews self-select.
0.3 kg, one wheel, and a flatter footprint
On paper the two grinders are twins: 750W input power, 220V~/50Hz, an 800–1750 r/min no-load window, a vacuum-shrouded wheel base with hose extraction, red and yellow colorways, 4 units per carton. The spec sheet where they differ is one line long — net weight, 3.6 kg against 3.9 kg. That 0.3 kg is the four-wheel base: one more contact wheel and the corresponding frame, which is what keeps the CI-G750B tracking flat on long, wide wall passes instead of drifting off line.
Freight math makes the same number worth checking twice. At 4 units per export carton, the 4-wheel carton is 1.2 kg heavier than the 3-wheel carton — small on a full container, noticeable on an LCL trial order where chargeable weight is summed across a mixed batch.
spec sheet: CI-G750 vs CI-G750B
| spec | 3-wheel CI-G750 | 4-wheel CI-G750B |
|---|---|---|
| input power | 750W | 750W |
| voltage | 220V~ / 50Hz | 220V~ / 50Hz |
| no-load speed | 800–1750 r/min | 800–1750 r/min |
| net weight | 3.6 kg | 3.9 kg |
| dust collection | shroud + vacuum hose | shroud + vacuum hose |
| colorways / carton | red / yellow · 4 units | red / yellow · 4 units |
where the 3-wheel CI-G750 fits
The 3-wheel dust-free wall grinder (CI-G750) is the lightest machine in the range, and that shows up in three places. Repainting crews working room-by-room carry it up and down stairs all day. Overhead and ceiling-adjacent passes put less torque on the wrist. And for a distributor, it is the natural first SKU: the lightest fleet unit at the friendliest freight profile, doing everything the applications list asks of it — plaster, putty and concrete wall sanding ahead of painting.
where the 4-wheel CI-G750B fits
The 4-wheel dust-free wall grinder (CI-G750B) buys its extra 0.3 kg into stability. On wide, open walls — new-build plaster, large putty coats, long uninterrupted passes — the four-point base tracks flatter and keeps the sanding head level edge to edge, which is exactly the geometry commercial finishing crews run all day. If your market skews toward new construction and large-surface contracts rather than room-by-room renovation, the B-model carries more of the workload.
stocking both: how a first order splits
Because the two lines share a motor platform, consumables story and packing format, most first orders do not choose — they split. With the site-wide MOQ at 10 pcs per SKU, a trial run of 10 + 10 units tests both bases in your market for a combined 20 machines; at 4 units per carton that is five cartons in total, comfortably inside LCL territory and small enough to expand the winning model on the repeat order. The full machine catalog lists both lines alongside the large-disc and mixing range, and our wall grinder accessories guide covers the spares that keep either base running.
If the import side — MOQ floors, OEM thresholds, freight and payment terms — is the open question rather than the model choice, the guide to importing wall grinders from China walks through the order playbook end to end.
faq
Is the motor or speed range different between the two models?
No. The CI-G750 and CI-G750B share the same 750W motor, 220V~/50Hz supply and 800–1750 r/min no-load range. The difference is the wheel base and the resulting weight: 3.6 kg versus 3.9 kg.
Which model is better for ceiling and overhead work?
The 3-wheel CI-G750, on weight. At 3.6 kg it is the lighter of the two, and on long overhead passes every 100 g counts against arm fatigue. The 4-wheel advantage — flatter tracking — matters most on vertical walls, not ceilings.
What carton packing do the grinders ship in?
Both models pack 4 units per carton, in red or yellow. The 0.3 kg per-unit difference becomes 1.2 kg per export carton — worth noting when you compare LCL freight quotes.
What MOQ applies if I want both models in one order?
The site-wide MOQ floor is 10 pcs per SKU, so a trial order of both models starts at 10 + 10 units. OEM private label runs from 50 pcs, and samples ship in 5-7 days via DHL/FedEx before you commit.
split your first order
tell us your market — renovation refits or open-wall contracts — and we'll suggest the 3-wheel / 4-wheel split that matches, from 10 pcs per model.