CHNT YBLX Series Travel Limit Switches
CHNT YBLX series travel limit switches are mechanical position detection components for industrial automatic control circuits. Applicable to AC 50/60Hz 380V and DC 220V control loops, they realize stroke limitation, direction switching and position interlock protection for machine tools, cranes, conveyors and automated production equipment. The complete product lineup covers YBLX-10, YBLX-19, YBLX-33 and YBLX-44 with diverse actuating arms and contact combinations to match different mechanical travel control demands.
Model Parameters & Features Table
| No. | Model | Category | Key Features | Application |
|---|---|---|---|---|
| 1 | YBLX-10/11 | Crane Travel Switch | Single roller lever, 1NO+1NC contacts, heavy-duty cast housing | Gantry crane, metallurgical equipment terminal limit protection |
| 2 | YBLX-10/12 | Crane Travel Switch | Double roller fork lever, bidirectional stroke trigger, anti-collision design | Crane forward/reverse stroke dual-limit interlock control |
| 3 | YBLX-10/31 | Crane Travel Switch | Weighted heavy lever, auto-reset after gravity release, 1NO+1NC | Large hoist over-limit safety cut-off protection |
| 4 | YBLX-10/32 | Crane Travel Switch | Double roller weighted lever, bidirectional gravity reset structure | Heavy lifting equipment upper & lower stroke dual limit |
| 5 | YBLX-19/001 | Mini Stroke Switch | Direct plunger actuation, no roller, compact body, instant trigger | Small automated machinery fixed position signal detection |
| 6 | YBLX-19/111 | Mini Stroke Switch | Inner single roller lever, automatic reset, standard 1NO+1NC | Packaging machine, conveyor stroke position control |
| 7 | YBLX-19/121 | Mini Stroke Switch | External single roller adjustable lever, flexible installation angle | Injection molding equipment mold opening/closing position sensing |
| 8 | YBLX-19/131 | Mini Stroke Switch | Inner & outer dual roller cross arm, bidirectional stroke sensing | Reciprocating automation equipment two-way limit signal |
| 9 | YBLX-19/212 | Mini Stroke Switch | Double roller non-auto-reset cross arm, mechanical locking function | Equipment safety stroke hard limit interlock circuit |
| 10 | YBLX-19/222 | Mini Stroke Switch | Dual roller long cross lever, non-reset heavy load trigger | Machine tool travel overrun emergency power-off protection |
| 11 | YBLX-33/11 | Heavy Plunger Limit Switch | Straight plunger, strong impact resistance, metal thick shell | Punching, stamping machinery stroke limit control |
| 12 | YBLX-33/12 | Heavy Plunger Limit Switch | Roller plunger actuation, buffer contact structure, wear-resistant | Automated assembly line hard stroke position detection |
| 13 | YBLX-44/10 | Overtravel Limit Switch | 10A rated thermal current, single plunger, small stroke trigger | Light load lifting equipment stroke monitoring |
| 14 | YBLX-44/20 | Overtravel Limit Switch | 20A thermal current, medium plunger, medium impact endurance | Small hoist stroke protection and power cut-off control |
| 15 | YBLX-44/40 | Overtravel Limit Switch | 40A maximum specification of YBLX-44, thick conductive terminals | Large industrial hoist heavy-duty over-limit safety switch |
Product Overview
CHNT YBLX series consists of four core sub-series with differentiated positioning for different industrial scenarios:
- YBLX-10 Series: Specialized heavy-duty travel switches for cranes and metallurgical equipment, equipped with roller levers and gravity weighted reset arms, high mechanical strength, suitable for frequent impact stroke limit of large lifting machinery.
- YBLX-19 Series: Universal miniature limit switches with diversified actuating structures (plunger, single roller, double roller, cross arm). Optional auto-reset and non-reset types, compact size, widely matched with machine tools, packaging and conveying automation equipment.
- YBLX-33 Series: Heavy plunger-type limit switches, thick metal housing and reinforced internal components, outstanding anti-impact performance, applicable to stamping, forging and other equipment with large mechanical impact.
- YBLX-44 Series: Over-travel limit switches with graded thermal current from 10A to 40A, specially designed for lifting machinery overrun protection, capable of breaking main control loop when stroke exceeds safe range.
All models adopt silver alloy snap-action contacts, featuring short switching time, stable signal output and long mechanical service life. The product complies with GB/T 14048.5 and IEC 60947-5-1 standards, rated voltage AC380V / DC220V, IP52 protection grade, adapting to indoor industrial workshop environment with dust and slight vibration.
Core Advantages
- Multiple actuating heads to satisfy unidirectional, bidirectional, gravity reset and mechanical locking control demands;
- Complete contact configuration of 1NO+1NC, supporting PLC signal feedback and contactor interlock logic;
- Rugged flame-retardant metal/plastic housing, anti-shock and anti-abrasion, stable long-term operation;
- Standard mounting holes, convenient installation and replacement on machine frames and equipment brackets.
Application Scenarios
This full series is widely applied in tower cranes, gantry hoists, CNC machine tools, automated assembly lines, packaging machinery, injection molding equipment, stamping presses, small elevators and logistics conveying systems, serving as core position detection and safety limit control components in low-voltage automatic control circuits.
CHNT YBLX Series Travel Limit Switches
