Load and duty
Rated load per lifting point, dynamic duty, operating frequency and any synchronized-motion requirement.
Product / Rigid chain actuators
Rigid Chain Actuators 30A–100A: Push Chain Lifting Units
Six rigid chain actuator sizes for stage lifts, orchestra pits, platforms and industrial lifting: maximum static loads from 10 kN to 200 kN, rated speeds from 150 to 300 mm/s and travel up to 10 m depending on model and load. Supplied as actuator units for integrators and OEMs or as complete rigid chain systems.
Quick selection
Compare the key ratings, then open the model for full specifications. Ratings at maximum load and at maximum travel are not simultaneous.
| Model | Max. static load / travel | Max. dynamic load / travel | Rated speed | Min. installation height |
|---|---|---|---|---|
| 30A | 10 kN / 1.2 m | 8 kN / 1.2 m | 150 mm/s | 200 mm |
| 35A | 12 kN / 1.5 m | 10 kN / 1.5 m | 200 mm/s | 226 mm |
| 40A | 40 kN / 2 m | 30 kN / 2 m | 300 mm/s | 370 mm |
| 60A | 90 kN / 2 m | 60 kN / 2 m | 300 mm/s | 450 mm |
| 80A | 130 kN / 2 m | 95 kN / 3 m | 300 mm/s | 550 mm |
| 100A | 200 kN / 3.5 m | 150 kN / 5 m | 300 mm/s | 650 mm |
Series data: Zhonghui Group product documentation for the 30A–100A rigid lifting chains. Static and dynamic ratings at maximum load and at maximum travel are listed separately and are not simultaneous. Final selection, interfaces and manufacturing data follow the drawing approved for your project.
30A Rigid Chain Actuator
Compact unit for small lift platforms, auditorium risers and temporary stage settings, for example a small scissor-type lifting platform.
Max. static load / allowed travel10 kN / 1.2 m
Allowed static load / max. travel10 kN / 1.2 m
Max. dynamic load / allowed travel8 kN / 1.2 m
Allowed dynamic load / max. travel8 kN / 1.2 m
Rated speed150 mm/s
Minimum installation height200 mm
System efficiency80%
Chain weight10 kg/m
Chain pitch30 mm
Drive unit weight13 kg
Pinion pitch radius30 mm
Chain storage box weight2.5 kg/m
Rise per revolution188 mm
35A Rigid Chain Actuator
Compact unit for small lift platforms, auditoriums and temporary stage settings where slightly higher load and speed than 30A are needed.
Max. static load / allowed travel12 kN / 1.5 m
Allowed static load / max. travel12 kN / 1.5 m
Max. dynamic load / allowed travel10 kN / 1.5 m
Allowed dynamic load / max. travel10 kN / 1.5 m
Rated speed200 mm/s
Minimum installation height226 mm
System efficiency80%
Chain weight17 kg/m
Chain pitch30 mm
Drive unit weight15.9 kg
Pinion pitch radius44 mm
Chain storage box weight4 kg/m
Rise per revolution270 mm
40A Rigid Chain Actuator
Long travel with heavier load for side auxiliary lifting platforms, side-stage offset platforms, choral risers and temporary stage settings.
Max. static load / allowed travel40 kN / 2 m
Allowed static load / max. travel25 kN / 4 m
Max. dynamic load / allowed travel30 kN / 2 m
Allowed dynamic load / max. travel15 kN / 4 m
Rated speed300 mm/s
Minimum installation height370 mm
System efficiency80%
Chain weight17 kg/m
Chain pitch30 mm
Drive unit weight55 kg
Pinion pitch radius40 mm
Chain storage box weight14 kg/m
Rise per revolution240 mm
60A Rigid Chain Actuator
Long travel with heavy load for side auxiliary platforms, offset platforms and choral risers in theatres and auditoriums.
Max. static load / allowed travel90 kN / 2 m
Allowed static load / max. travel35 kN / 5 m
Max. dynamic load / allowed travel60 kN / 2 m
Allowed dynamic load / max. travel25 kN / 5 m
Rated speed300 mm/s
Minimum installation height450 mm
System efficiency80%
Chain weight36 kg/m
Chain pitch60 mm
Drive unit weight86 kg
Pinion pitch radius60 mm
Chain storage box weight14 kg/m
Rise per revolution360 mm
80A Rigid Chain Actuator
Heavy-duty unit for orchestra-pit lifts, main-stage lifting platforms and choral risers.
Max. static load / allowed travel130 kN / 2 m
Allowed static load / max. travel35 kN / 8 m
Max. dynamic load / allowed travel95 kN / 3 m
Allowed dynamic load / max. travel35 kN / 8 m
Rated speed300 mm/s
Minimum installation height550 mm
System efficiency80%
Chain weight49 kg/m
Chain pitch80 mm
Drive unit weight151 kg
Pinion pitch radius80 mm
Chain storage box weight18.3 kg/m
Rise per revolution480 mm
100A Rigid Chain Actuator
Largest size for orchestra-pit lifts and main-stage lifting platforms, with travel up to 10 m at reduced load.
Max. static load / allowed travel200 kN / 3.5 m
Allowed static load / max. travel20 kN / 10 m
Max. dynamic load / allowed travel150 kN / 5 m
Allowed dynamic load / max. travel20 kN / 10 m
Rated speed300 mm/s
Minimum installation height650 mm
System efficiency80%
Chain weight68.5 kg/m
Chain pitch100 mm
Drive unit weight232 kg
Pinion pitch radius100 mm
Chain storage box weight23.7 kg/m
Rise per revolution600 mm
How a rigid chain actuator works
The drive pinion engages the chain; on the load side the links interlock into a rigid column that can push and hold the load. On the return side the chain unlocks and folds into the chain storage box, so a long stroke fits in a low installed height. See rigid chain technology and the comparison with hydraulic and screw-jack lifting.
Engineering, installation and commissioning support comes from our parent company — see about Zhonghui Group and qualifications.
FAQ
What is a rigid chain actuator?
A rigid chain actuator is a linear actuator whose chain links lock together as they leave the drive, forming a rigid column that can push, pull and hold a load. On the return stroke the chain unlocks and folds into a storage box, so the installed height stays low.
Push chain, zip chain or rigid chain — what is the difference?
Push chain and rigid chain describe a single interlocking chain; zip chain usually describes two chains that zip together into a column. All are used for compact long-stroke lifting; selection depends on load, travel, speed and space.
Which model should I choose?
Start from moving load per lifting point and required travel, then check speed and installation height. As a guide: 30A/35A for small platforms, 40A/60A for side and auxiliary platforms, 80A/100A for orchestra-pit and main-stage lifts.
Can several actuators run synchronized?
Yes. Multi-point and matrix platforms use several units with synchronized control; the layout and control interface are engineered for the project.
Do you supply the actuator only or a complete lift?
Both. We supply rigid chain actuators for integrators and OEMs, or complete systems and rigid chain lift tables.
How are price, lead time and warranty handled?
Price depends on model, quantity, travel and controls. We quote EXW (ex-works, collected from our factory) or on terms negotiated in the contract; lead time and warranty are set per project. Overseas installation supervision is available.
Information to Confirm Before Selection and Quotation
Share the following so the actuator, installation conditions and control interface can be assessed together.
Space and travel
Available installation height, travel, platform dimensions and structural constraints.
Speed and control
Speed, positioning accuracy, interlocks, emergency-stop logic and supervisory interfaces.
Delivery and acceptance
Supply boundaries, installation, commissioning, documentation and acceptance requirements.