TWH / TWM Series Lever Roller Stopper Cylinder | Self-Locking Heavy-Duty Stop Cylinder

Brand: SOLH by Richge Technology

1. Product Overview & Core Structural Features

     The SOLH TWH/TWM series are lever roller-type heavy-duty stopper cylinders designed for medium and heavy-load automated conveyor lines. Covering bore sizes from φ20mm to φ80mm, the series features core advantages including built-in self-locking anti-rebound mechanism, standard adjustable hydraulic buffer, high-rigidity lever structure and integrated flange mounting. It stably handles 30–300kg pallets and tooling plates, widely used for conveyor stopping, transfer positioning and station anti-shifting, serving as the mainstream reliable stopper solution for medium and heavy-load automation scenarios.

  1.1 Lever Roller Force-Boosting Structure

     Adopting a double-acting lever roller design, the product utilizes lever force amplification and rolling contact working principle. It delivers large stopping force with low impact and smooth rolling operation, effectively reducing rigid impact during workpiece stopping and protecting both equipment and workpieces.

  1.2 Core Self-Locking Anti-Rebound Function

     Equipped with an integrated mechanical self-locking mechanism as an optional upgrade. After workpiece impact stopping, the cylinder automatically locks the lever arm to prevent rebound and reverse pushing of workpieces, eliminating station displacement problems and greatly improving overall production line stability and positioning accuracy.

  1.3 Graded Hydraulic Buffer System

     • φ20/φ25 Small Bore: Matched with non-adjustable hydraulic buffer, perfectly adapting to light and medium-load low-speed working conditions with cost-effective stable buffering performance.

     • φ32–φ80 Large Bore: Equipped with adjustable hydraulic buffer. Users can freely rotate the adjustment disc to change damping resistance, matching workpieces of different weights and conveying speeds to fully absorb impact energy and achieve zero-impact stopping.

  1.4 High-Rigidity & Long-Life Design

     Adopts thickened hard chrome-plated piston rod and hard anodized cylinder body, featuring excellent wear resistance, pressure resistance and impact resistance. The standard oil-free operation design adapts to clean production environments and welding splash-proof working conditions with low maintenance and extended service life.

  1.5 Flexible Installation & Switch Layout

     Standard flange mounting ensures fast and stable installation. The cylinder body is pre-reserved with sensor mounting grooves, supporting direct magnetic switch installation without extra accessories. 4-side mounting design avoids on-site fixture interference with strong layout adaptability.

  1.6 Model Functional Differentiation

     • TWH Series: Standard double-acting structure with maximum stopping force, suitable for heavy-load and high-frequency start-stop scenarios.

     • TWM Series: Double-acting with built-in spring structure, realizing automatic release after power failure, prioritizing equipment and personnel safety for high-risk stations.

2. Complete Model Naming Rules & Order Examples

  1. Typical Model Examples: TWH50-30SK-F, TWM63-30K-F

  2. Standard Order Examples

     • Self-Locking Medium-Load Model: TWH50-30S-F (φ50 bore, 30mm stroke, non-adjustable hydraulic buffer, with self-locking function)

     • Safety Power-Off Release Model: TWM63-30K-F (φ63 bore, 30mm stroke, adjustable hydraulic buffer, built-in spring safety structure, with self-locking)

3. General Technical Parameters (20℃, 0.5MPa Standard Condition)

  3.1 Basic Specifications

     • Operation Mode: TWH = Double-acting; TWM = Double-acting with built-in spring

     • Working Pressure Range: 0.05~1.0MPa; Proof Pressure: 1.5MPa

     • Ambient Temperature: -10℃~60℃ (ice-free environment)

     • Buffer Configuration: φ20/φ25 = Non-adjustable hydraulic buffer; φ32~φ80 = Adjustable hydraulic buffer

     • Lubrication Mode: Oil-free operation

     • Installation Method: Standard flange mounting

  3.2 Standard Bore & Stroke Combination

  3.3 Theoretical Stopping Force (Unit: N @0.5MPa, Lever Output, TWH)

  3.4 Product Weight (Unit: kg @ Standard Stroke, TWH)

4. Core Configuration & Selection Guidelines

  4.1 Buffer Type Selection

     • S Non-Adjustable Hydraulic Buffer: Dedicated for φ20/φ25 small bores. Cost-effective, suitable for light loads (≤50kg) and low-speed operation (≤0.3m/s) with stable fixed buffering performance.

     • K Adjustable Hydraulic Buffer: Exclusive for φ32–φ80 large bores. Supports free damping adjustment, perfectly matching medium and heavy loads (50–300kg) and medium-high speed operation (≤0.5m/s), adapting to diverse working conditions.

  4.2 Self-Locking Function Selection

     • F Self-Locking Type (Recommended): Automatic locking after workpiece impact stopping, effectively preventing workpiece rebound and station displacement. Ideal for fully automated continuous conveyor lines, greatly improving operational stability.

     • Non-Locking Type: Only applicable for scenarios with tiny reverse impact and manual reset. Not recommended for automatic production lines due to poor positioning stability.

  4.3 Operation Mode Selection

     • TWH Double-Acting: Maximum stopping force with bidirectional controllable clamping and releasing. Optimized for heavy-load and high-frequency start-stop cycling scenarios.

     • TWM Spring-Loaded Double-Acting: Automatic release upon power failure, ensuring equipment and personnel safety. Prioritized for dangerous working stations and power-off protection applications.

5. Typical Application Scenarios

     • Medium & Heavy-Duty Conveyor Lines: Specialized for stopping, transfer positioning and anti-shifting of 50–300kg pallets and tooling plates in electronics, home appliance and logistics industries, delivering stable medium-heavy load limiting performance.

     • Automated Material Handling Lines: Applied to medium-high speed (≤0.5m/s) workpiece stopping on roller and belt conveyors. The adjustable hydraulic buffer achieves soft and impact-free stopping process to protect workpieces.

     • Machine Tool & Welding Stations: Suitable for machine tool loading/unloading limiting and welding fixture positioning. Featuring impact resistance and welding slag prevention, it stably adapts to harsh industrial working conditions.

     • AS/RS & AGV Docking Systems: Used for stereoscopic warehouse pallet stopping and AGV accurate docking positioning. The self-locking anti-rebound design ensures stable action and reliable signal feedback for intelligent warehousing systems.

6. 3-Step Quick Selection Guide

     1. Bore Size Selection: Select bore according to workpiece weight and operating speed. Follow the safety standard: theoretical stopping force ≥ actual load × 2. φ25 for load below 50kg; φ32/φ40 for 50–150kg load; φ50/φ63 for 150–300kg load.

     2. Buffer Type Selection: Choose S non-adjustable buffer for φ20/φ25 bores; choose K adjustable buffer for bores above φ32 to adapt to variable speed and load conditions.

     3. Functional Configuration Selection: Select F self-locking for all automatic production lines; adopt TWH double-acting for heavy-load & high-frequency scenarios; choose TWM spring-loaded type for safety-priority and power-off protection stations.

One Sentence Summary

     SOLH TWH/TWM series medium-heavy duty lever roller stopper cylinders integrate self-locking anti-rebound mechanism and graded hydraulic buffer system, providing stable, low-impact and high-safety professional stopping solutions for 30–300kg automated conveyor and production stations.