SYM NEWS
You are here: Home » News
  • Feb
    06
    Passenger Hoist Limit Switch: Your Safety Guardian in Vertical Transportation
    Q1:What is a Passenger Hoist Limit Switch?A limit switch is a safety device installed in passenger hoists to control the movement of the elevator car. It ensures that the hoist stops accurately at designated floors and prevents over-travel beyond safe limits. Q2:Why is it Important?1.Prevents the h
  • Feb
    05
    The Passenger Hoist – The Essential Vertical Highway for Your Construction Site
    On a rising high-rise, time is money, and the most valuable asset is your workforce. Moving workers, tools, and light materials efficiently and safely between floors is the heartbeat of productivity.
  • Feb
    04
    Potentiometers for Tower Cranes: Your Essential Q&A Guide
    What is a Potentiometer in a Tower Crane?A potentiometer is a type of variable resistor used to measure angular position or rotation. In tower cranes, it helps monitor and control the movement of the boom, trolley, and hoist by providing accurate feedback on position and speed.Why Are Potentiometers
  • Feb
    03
    The QTD800/50 Luffing Jib Tower Crane – Master of Congested Skies
    Q1. What is the QTD800/50 Luffing Jib Tower Crane?The QTD800/50 is a heavy-duty, high-capacity luffing jib tower crane with a maximum moment of 800 tonne-meters. Its defining feature is a hinged jib that can be raised and lowered (luffed), unlike the fixed horizontal jib of a hammerhead crane. Q2.W
  • Feb
    02
    The Passenger Hoist Drive Mechanism – The Powerhouse Behind Vertical Mobility
    Q1. What is a Passenger Hoist Drive Mechanism?The Passenger Hoist Drive Mechanism is the complete power transmission assembly that drives the hoist's movement.It is a packaged system typically consisting of:Disc Brake Three-Phase Motors (11KW, 13KW, 15KW, 18.5KW options)Flexible CouplingWorm Gear Re
  • Jan
    30
    The Tower Crane Contactor – The Electromechanical Heartbeat of Your Crane
    Q1. What is a Tower Crane Contactor?A Tower Crane Contactor is a high-power, electrically-controlled switch designed to handle the substantial electrical currents required by the crane's main motors (hoist, slewing, trolley) and auxiliary systems. Q2. Why is the Contactor So Important?1.Enables Saf
  • Jan
    29
    The Tower Crane Section Ladder – The Essential Climb to Safety & Access
    Reaching the cab of a tower crane is the first task of every shift. The journey up the mast is made possible by one of the most fundamental yet critical safety components: the Tower Crane Section Ladder. This isn't just a climbing aid; it's a lifeline integrated into the very structure of the crane.
  • Jan
    28
    The Tower Crane Resistor – Precision Control at the Heart of Motion
    Q1. What is a Resistor for a Tower Crane?A Tower Crane Resistor is a specialized electrical component used within the crane's control system, primarily in Resistor-Controlled Speed (RCS) systems for hoisting, slewing, and trolley drives. It precisely manages electrical current flow to control motor
  • Jan
    27
    The Slip Ring for Tower Crane – The Vital Rotating Link
    Q1. What is a Slip Ring for a Tower Crane?A Slip Ring (also known as a collector ring, rotary electrical joint, or bus ring) is an electromechanical device installed at the crane's slewing joint. Q2. Where is it installed, and what is its function?It acts as a continuous bridge for electrical power
  • Jan
    26
    The New Model Tower Crane Seat – Your Operator’s Command Center in the Sky
    An operator’s seat is more than just a place to sit—it’s the critical interface between human skill and machine precision. In the demanding world of tower crane operation, comfort, safety, and durability aren’t luxuries; they’re necessities. Introducing the New Model Tower Crane Seat, engineered to support peak performance from sunrise to sunset, shift after shift.
  • Total 64 pages  Go to Page
  • Go

Quick Links

Contact Us
ADD : Ruibao Oriental Mansion, Sanyi street, Hunnan district, Shenyang , China
TEL : 0086-24-84317130
WEB : www.symtowercrane.com
EMAIL : enquiry@symtowercrane.com
Contact US
Copyright 2026​​​​​​​SYM HOIST & TOWER CRANE EQUIPMENT CO.,LTD All Rights