Factory Direct two crank manual nursing bed with mattress and wheels for sale - Bulk Supply and Specification Guide

Construction Method and Its Effect on Consistency

The frame is built from 1.2 mm cold‑rolled steel tube, robot‑welded at 120 °C to eliminate heat‑affected‑zone variation. Powder coating at 180 °C gives a 70 µm film that passes 500 h salt‑spray without blistering. The two‑crank mechanism uses hardened 1045 steel shafts with a 0.02 mm clearance fit, so each turn delivers repeatable 30 mm lift per crank revolution. Mattress foam is 35 kg/m³ high‑resilience polyurethane, cut to ±2 mm thickness tolerance. Wheels are 100 mm polypropylene with a dual‑lock brake that engages at 15 Nm. All sub‑assemblies are jig‑checked before final torque verification.

Lot‑to‑lot drift appears when the welding current slips above 250 A; the resulting bead width changes the overall bed width by up to 3 mm, which pushes the mattress out of spec and triggers returns.

Size, Weight and Specification Range

Standard deck size is 2000 mm × 900 mm × 500 mm (L×W×H). Overall weight ranges from 68 kg (light gauge) to 78 kg (heavy gauge). Crank torque requirement is 12–14 Nm for the light frame and 14–16 Nm for the heavy frame. Wheel load rating is 150 kg per castor, tested to 200 kg static. Mattress firmness is 120 N/50 mm (IL DIN 53577). All dimensions are held to ±3 mm on length and width, ±2 mm on height.

The table below captures the inspection criteria we apply to every production lot.

Buying Mistakes That Lead to Returns

Specifying a light‑gauge frame for a high‑turnover ward saves 10 kg per unit but raises crank effort above 16 Nm after 200 cycles, causing staff fatigue and warranty claims. Ordering the standard 35 kg/m³ foam for bariatric patients leads to bottom‑out within six months; a 45 kg/m³ grade adds 2 kg but extends service life to 24 months. Skipping the dual‑lock wheel option results in unintended bed drift on vinyl flooring, a top‑cited return reason. Finally, assuming the powder coat is interchangeable with epoxy can cause coating adhesion failure after autoclave cleaning cycles.

• Undersized frame gauge for adjustment frequency
• Foam density below patient weight class
• Single‑lock castors on smooth floors
• Wrong coating chemistry for cleaning protocol

OEM and ODM Programme Structure

Our OEM line freezes the frame geometry, crank ratio and wheel spec; you supply branding artwork and we apply laser‑etched logos on the headboard and a silk‑screen label on the mattress cover. Minimum order for OEM is 50 units, lead time 35 days from artwork approval. ODM adds a configurable deck length (1900–2100 mm), optional side‑rail integration, and a choice of two foam densities; tooling cost is amortised over 200 units, with a 45‑day prototype window. Both programmes share the same inspection gate described above, so lot consistency is guaranteed regardless of customisation depth.

Stock Availability and Reorder Planning

We hold 120 standard‑configuration beds in the Shanghai warehouse, ready for immediate dispatch in 20‑ft containers (12 units per container). Reorder point is set at 30 units; a blanket PO triggers a 21‑day production run that replenishes stock without interrupting ongoing OEM schedules. Seasonal peaks (Q4) see a 30 % uplift in demand; we recommend placing a forecasted blanket order by early September to lock capacity and avoid the 5‑week lead‑time extension that occurs when the line runs at full utilisation.