Reciprocating Lift Case Study | Pit-less Through-Floor Installation for Factory Renovation

POSTED: 4/23/2026

Client Need

Client: Suzhou Liliang Construction & Decoration Engineering Co., Ltd. (Factory renovation specialist)
Project: 2 reciprocating lifts for a Jiaxing factory
Key challenges: Floor penetration + basement installation + 4.65m suspended column + 3 stops + C‑shaped access + only 2650mm beam spacing

Liliang needed to vertically transport construction materials from basement to three working floors. During construction, the plan changed: instead of a ground‑floor pit, the floor was opened and the lift must be anchored to the basement floor (4.65m below first floor), creating a suspended column. Beam spacing is just 2.65m square – extremely tight. Requires 3 stops, C‑shaped access (1600mm direction), 500kg capacity, 16.4m travel.

Core Specifications

Parámetro	Especificación
Equipment name	Reciprocating lift
Quantity	2 units
Capacidad de carga nominal	500 kg
Travel height	16.4 m (16400 mm)
Number of stops	3 stops / 3 levels
Car dimensions (W×D×H)	1600 × 1600 × 2700 mm
Shaft dimensions (W×D×H)	2540 × 1800 × 21170 mm
Access direction	C-shaped access along 1600mm direction
Structure type	Pit-less through-floor (basement garage installation, columns extended 4650mm downward)
Motor de accionamiento	9.2 kW SEW motor with brake
Velocidad de elevación	0-40 m/min, variable frequency drive
Main frame	F120 frame + J100×50×4mm connectors
Top frame material	J100×50×4mm
Car construction	100×50×4mm rectangular tube + 3mm flat panel
Car guide rails	T90 + fasteners
Counterweight guide rails	TK5A + guide shoes
Cadena	16A
Fall arrest device	Safety gear × 2 units
Tampón	Tampón de poliuretano
Top frame guardrail	30×30mm square tube
Maintenance ladder	Access ladder for top platform
Color	RAL 7035 light grey
Foso	None (direct mounting on basement garage floor)
Special requirement	Floor slab opened, basement floor to first floor height 4650mm, extended columns through floor slab for anchoring
Order date	February 8, 2026
Shipment date	March 8, 2026

Solución

• Pit‑less through‑floor design: Columns extended 4.65m downward through floor slab, anchored to basement floor – no civil pit needed.
• High‑power drive: 9.2kW SEW motor with brake + VFD (0‑40m/min) – ample power reserve.
• Dual mechanical fall protection: 2 safety gears + polyurethane buffer.
• Compact layout: Car W1600×L1600×H2700mm, T90 rails, 16A chain, RAL7035 finish.
• C‑shaped access: Entry from one side, exit from adjacent side – ideal for tight spaces.

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