21mm-89mm Railway Vacuum Brake Hose 11 Bar Rubber Steel Fabric

Railway vacuum brake hose

Railway vacuum brake hose used in the braking systems of railway locomotives and rolling stock. This vacuum hose use in compressed-air braking systems operated at pressures up to a maximum of 11.5 bar and within the temperature range -25°C to +65°C . Vacuum breaking systems operated at a vacuum up to 990 mbar and within the temperature range -25°C to +65°C .

Railway vacuum brake hose is mainly composed of :

a) An internal wire spiral.

b) An inner ply of fabric. This shall extend not more than 10.0 mm beyond the end of the internal wire.

c) A rubber lining throughout the length of the hose.

d) A ply of impregnated fabric throughout the length of the hose.

e) Fabric reinforcement extending for approximately 125 mm from each end.

f) A fabric cover over the whole length of the hose.

The lining shall be uniform, reasonably concentric,free from air holes, porosity and other defects. The thickness shall be not less than 3.2 mm.

The inside surface of the rubber at the ends of the hose shall readily conform to the nipples of the couplings or pipe ends.

The hose shall be consolidated and shall be uniformly vulcanized.

Product Specification

Structure:

a) Internal wire spiral

b) Inner ply of fabric

c) Rubber lining

d) Ply of impregnated

e) Fabric reinforcement

f) Fabric cover

Tensile strength : ≥14 MN/m² , break elongation : ≥500%

Adhesion : 67 N, shall not separate at a rate of more than 25 mm/mim

Ageing resistance : aged for 168H at a temperature of 70±1°C,shall show results which do not vary by more than 20% from the unaged values.

Vacuum retention: 170 mbar, and the hose shall not shorten by more than 5% in that period.

Non-kinking: When do strength and flexibility testing, the hose should be parallel, without permanently distorting or displacing the wire.

Drawing

Advantage

• Shorten braking distance
• Reduce wheel wear
• Durable and long service life
• Good flexibility and burst resistance
• Wear resistance, not easy to crack
• Easy installation and impact resistance
• High tensile strength, stable braking effect
• Ozone resistance and low temperature resistance

Application

Related Products

We also have

Railway air brake hose

Railway air brake hose assembly

Railway hose couping head, hose connector

Hengtairail Equipment Co., Ltd (hereinafter referred to as “Hengtairail”) was established by Mr. Wei, in 1999. He was as a vehicle engineer in the China Railway Chengdu Bureau. A professional engineer team and high-efficiency sales team have been built at present.

Hengtairail is certified and operating to the ISO9001:2015 management system. Products meet technical requirements China Railway Test & Certification Centre (CRCC), Association of American Railroads (AAR), International Union of Railways (UIC), etc.

Hengtairail is a global supplier of rail vehicle components & systems. Including casting, forging, and machining products.

Specific products include:

· Wheelset: axle, wheel

· Bearing & axle box

· Spring & vibration control system: steel spring, rubber spring, air spring, leveling valve, shock absorber, and other truck components

· Coupler & draft gear device

· Braking system that meets UIC & AAR requirements

· Passenger train facilities & equipment: window, handrail, luggage rack, seat, HVAC system, toilet, gangway, plug door, interior products

· Locomotive parts

Based on the cooperation of many reliable manufacturers, Hengtairail has lots of advantages, such as flexible delivery time & payment terms, convenient after-sales service, etc. Under those favorable conditions, clients’ procurement costs and risks can be controlled effectively. It’s beneficial for clients to purchase transnational.

After more than 20 years of development, relying on high-quality products and professional services, Hengtairail establishes a complete supply chain system and long-term good business relationships with clients who come from more than 30 countries and regions.

Safety is the forever theme of public transport. Fast and big capacity of passengers is the particularities of rail transport. That makes us have a higher requirement for safety. Therefore, Hengtairail will continue to carry out the manufacturing process and quality guarantee schedule strictly, offer excellent products to meet clients' needs, and become a comprehensive supplier of rail vehicle components with core competitiveness.