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Anti-Fall Safety Device SAJ30-1.2 is one of the most critical safety components in a construction hoist, designed to prevent the cage from falling due to over-speed or mechanical failure. This progressive safety device combines a gear, centrifugal speed limiter, cone drum, and braking mechanism to ensure reliable operation and maximum safety during lifting operations. It is commonly used in pinion and rack-type construction hoists to protect both the operator and the equipment.
Measured No.
Safety device action speed(m/s)
Braking load(KN)
Braking distance(m)
1
1.005
40.6
0.855
2
1.043
40.7
0.955
3
0.986
48.3
1.558
Anti-Fall Safety Device SAJ30-1.2 is an essential component for construction hoists, ensuring the safety of workers and equipment by preventing uncontrolled falls. This device is specifically designed to work with gear and rack-type hoists, providing reliable protection against sudden drops caused by mechanical failure or over-speed conditions. The SAJ series includes models such as SAJ30-1.2, SAJ40-1.2, and SAJ50-1.2, each tailored for different load capacities and operating speeds.
The SAJ30-1.2 model has been tested and meets the requirements set by JG121-2000. Its average action speed is 1.0 m/s, and it can reliably brake under rated load conditions. The braking distance is within acceptable limits, ensuring safe operation even in emergency situations.
Model
Rated Load
Rated Speed
Calibration speed
SAJ08-1.0
0.8T
1.0m/s
Upon request
SAJ30-1.2
3.0T
1.2m/s
Upon request
SAJ30-1.4
3.0T
1.2m/s
Upon request
SAJ40-1.2A
4.0T
1.2m/s
Upon request
SAJ40-1.4
4.0T
1.4m/s
Upon request
SAJ40-2.0
4.0T
2.0m/s
Upon request
SAJ50-1.2
5.0T
1.2m/s
Upon request
SAJ50-2.0
5.0T
2.0m/s
Upon request
SAJ60-1.2
6.0T
1.2m/s
Upon request
SAJ60-2.0
6.0T
2.0m/s
Upon request
Our Services:
1. Customized design and production according to your specific needs.
2. Welcome to visit our factory and learn more about our products and manufacturing process.
3. 24/7 online and phone technical support.
After-sales Service:
1. Professional technicians will be sent to your site to guide installation and setup.
2. 12-month warranty (excluding wire rope and AC contactor), with spare parts available all year round.
3. Lifetime free technical support.
FAQ:
Q1: Can you provide customized products?
A1: Yes, we are a high-tech enterprise affiliated with the China Academy of Building Research. Our team of engineers, including professors and senior engineers, can offer special designs based on your project drawings and help solve any issues you may face.
Q2: How long does it take to design and manufacture customized products?
A2: Normally, design modifications to meet your requirements take about one week. For special projects, the delivery time is usually 30–40 days.
Q3: What brands do you use for key components?
A3: Motors: Sanshang (Shanghai), Gearbox: Xingxiang (Nantong), Inverter: Zhengxuan (Shenzhen), ABB or Schneider can also be options. Other electrical components: Schneider or Siemens. Automatic leveling system: Weikong (Jinan) for construction hoists.
Q4: What services do you offer?
A4: With over 20 years of experience in construction machinery, we focus on quality and technology. All machines are fully tested before delivery. We offer a one-year warranty on complete machines and free service for production defects. Skilled engineers can be dispatched for on-site support.
Sribs Anti-Falling Safety Device Construction Hoist Spare Parts
Model NO.: SAJ40
Power: Electric
Tripping Speed: 0-60 M/Min
Applicable Models: Scd200/200 Construction Lift Hoist Elevator Safet
Color: Customizable
Weight: 50kg
Ratio Speed: 1.0m/S
Minimum Order Quantity: 2PCS
Loading Port: Shanghai
Trademark: CPTC/GJJ/BAODA
Transport Package: Carton Packing, Wooden Box Packing
Specification: SAJ40
Origin: China
HS Code: 8483600090
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