The TWZB-315 series foot - operated hydraulic drum brake excels in safety, operational stability, low maintenance, cost - effectiveness, and adaptability, making it ideal for manual - controlled, power - free braking scenarios of small and medium - sized cranes and light - duty lifting equipment. Below are its core advantages:
Core Advantages
Fail - Safe Safety Design (Normally Open + Spring Backup)
It is a normally - open brake that relies on foot - hydraulic actuation for braking and a fail - safe return spring for release. When the hydraulic system fails, the spring can immediately trigger emergency braking to prevent load slipping.
The pedal - mounted locking pin enables reliable parking positioning, eliminating the need for additional parking brakes.
The interlocking gap - balancing device maintains equal clearance on both sides of the brake shoes, avoiding one - side dragging and ensuring consistent braking force.
Stable Braking & Precise Control
The foot - operated hydraulic drive allows for stepless adjustment of braking force. Operators can modulate the pedal stroke to achieve smooth deceleration and accurate positioning, which is perfect for load lowering and speed reduction.
The hydraulic transmission delivers stable clamping force, with a rated braking torque ranging from 250 to 500 N·m, meeting the needs of light - to - medium - duty load braking.
The self - lubricating bearings at hinge points ensure efficient power transmission and consistent braking response.
Low Maintenance & Easy Servicing
The interlocking gap - balancing device automatically maintains the 0.6-1.0 mm shoe clearance, reducing manual adjustment work.
The clip - on friction linings can be replaced without disassembling the entire brake body, saving downtime.
Self - lubricating hinges minimize wear and reduce lubrication frequency, and the non - asbestos semi - metallic linings have a long service life (replace when thickness ≤3 mm).
Standardized hydraulic components make it easy to source replacement parts, lowering maintenance costs.
Power - Free & Easy Installation
It has an integrated foot - hydraulic pump unit, requiring no external power supply. This makes it suitable for outdoor, mobile, or power - limited workplaces.
It has a compact structure and a weight of about 55-65 kg. The installation is simple, and it can be directly mounted on the equipment frame without complex modifications.
It complies with JB/T 6406-2006 and DIN 15435 standards, ensuring good interchangeability and compatibility with mainstream small and medium - sized crane traveling mechanisms.
Cost - Effective & Durable
There is no need for power - related supporting facilities, which reduces the initial investment and operation costs.
Key components such as the self - lubricating bearings and wear - resistant friction linings have a long service life, minimizing downtime and repair expenses.
The hydraulic system operates at a low pressure of 2-5 MPa, which reduces wear on hoses and seals and extends the service life of the hydraulic unit.
Wide Environmental Adaptability
It can work normally in an environment with a temperature range of - 20℃ to + 50℃ and a relative humidity of ≤90%.
It is available with non - asbestos semi - metallic linings, meeting environmental protection requirements and being suitable for most industrial working conditions.
Summary
The TWZB-315 stands out for its fail - safe safety, smooth manual control, minimal maintenance, power - free operation, and cost - effectiveness, making it a reliable choice for small and medium - sized crane traveling mechanisms and light - duty lifting equipment.
