JL62-89 Positioning Tube
Forged, hot-dip galvanized positioning tube rated 4.5 kN horizontal working / ≥13.5 kN breaking, 20# seamless steel.
Specifications
| Model | JL62-89 |
|---|---|
| Standard | TB/T 2075 series, Fittings for overhead contact system of electrified railway |
| Tensile Failure Load | Working 4.5 kN · Tensile 6.75 kN · Breaking ≥13.5 kN |
| Materials | 20# seamless steel tube, metal-die forged, hot-dip galvanized |
| Installation | Carries the locator on the cantilever, allowing horizontal adjustment of the registration |
The JL62-89 positioning tube fixes the locator and allows its horizontal adjustment, adding elasticity to the registration point. Its horizontal working load is 4.5 kN, tensile withstand 6.75 kN and breaking load at least 13.5 kN.
Manufacture is 20# seamless steel tube shaped by metal-die forging and finished with hot-dip galvanizing — a dense, forged body with durable corrosion protection for outdoor service.
Specifications
- Horizontal working load: 4.5 kN
- Tensile withstand load: 6.75 kN
- Breaking load: ≥13.5 kN
- Material: 20# seamless steel tube, metal-die forged, hot-dip galvanized
The product is manufactured under CRCC railway product certification and an ISO 9001 quality management system, with incoming material inspection, in-process control on critical operations and batch-by-batch final inspection before delivery.
Frequently Asked Questions
What loads is the JL62-89 rated for?
Horizontal working load 4.5 kN, tensile withstand 6.75 kN and breaking load at least 13.5 kN — a three-times reserve over the working rating.
Why die-forged?
Metal-die forging densifies the steel and shapes the ends under pressure, giving higher strength and fatigue life than welded fabrication in the loaded zones.
What is the tube's role at the registration point?
It fixes the locator and lets it be adjusted horizontally — that adjustability is what adds elasticity to the registration point.
How is it protected against corrosion?
Hot-dip galvanizing after forging — a thick zinc layer suited to decades of outdoor exposure.
Performance
Operating Conditions
Outdoor service at OCS registration points on mainline, high-speed and station structures, subject to suspension, wind, ice and dynamic pantograph loads as defined by the OCS design.
Mechanical Performance
Die-forged 20# seamless tube rated 4.5 kN horizontal working with ≥13.5 kN breaking; galvanized for long outdoor life.
Applications
Mainline Registration
4.5 kN class for standard registration duty.
Forged Strength
Metal-die forged body, 3× breaking reserve.
Standard Interfaces
Carries locator and bracket family.
Harsh Climates
Hot-dip galvanized corrosion protection.
