- Material: steel
- Color: Iron color, customized
- MOQ: 50 pcs
A drum brake is a brake that uses friction caused by a set of shoes or pads that press outward against a rotating cylinder-shaped part called a brake drum.
The modern automobile drum brake was first used in a car made by Maybach in 1900, although the principle was only later patented in 1902 by Louis Renault. He used woven asbestos lining for the drum brake lining, as no alternative dissipated heat like the asbestos lining, though Maybach had used a less sophisticated drum brake. In the first drum brakes, levers and rods or cables operated the shoes mechanically. From the mid-1930s, oil pressure in a small wheel cylinder and pistons (as in the picture) operated the brakes, though some vehicles continued with purely mechanical systems for decades. Some designs have two wheel cylinders.
As the shoes in drum brakes wear, brakes required regular manual adjustment until the introduction of self-adjusting drum brakes in the 1950s. Drums are prone to brake fading with repeated use.
In 1953, Jaguar fielded three cars equipped with disc brakes at Le Mans, where they won, in large part due to their superior braking over drum equipped rivals. This spelled the beginning of the crossover of drum brakes to disc brakes in passenger cars. From 1955 to the 1970s, disc brakes gradually replaced drum brakes on the front wheels of cars. Now practically all cars use disc brakes on the front wheels, and many use disc brakes on all four wheels.
In the United States, the Jeep CJ-5 (manufactured by AM General) was the final automobile (produced for the United States Postal Service) to use front drum brakes when it was phased out in 1984. However, drum brakes are still often used for handbrakes, as it has proven very difficult to design a disc brake suitable for holding a parked car. Moreover, it is very easy to fit a drum handbrake inside a disc brake so that one unit serves as both service brake and handbrake.
Early brake shoes contained asbestos. When working on brake systems of older cars, care must be taken not to inhale any dust present in the brake assembly. The United States Federal Government began to regulate asbestos production, and brake manufacturers had to switch to non-asbestos linings. Owners initially complained of poor braking with the replacements; however, technology eventually advanced to compensate. A majority of daily-driven older vehicles have been fitted with asbestos-free linings. Many other countries also limit the use of asbestos in brakes.
Packing & Shipping
Carton packing & bag packing, plywood case packing, which can be packaged as per client’s requirement.
A. By air: some customers want faster deliverying, it is better by air, whatever with accessories or finished products form, it will be packaged by carton box or wooden box, but the air freight will be higher than by sea.
B. By sea ship: the good will be loaded into 20’feet container or 40’feet high container, from Tianjin port. Its shipping time will be long, about 20–30 days or 40 days, but the sea freight cost will be much lower than by air.
Compared with some trading comapnies or small private factories, we are one of the leading professional manufacturers in electric tricycle industry, therefore we own these unique advantages as below compared with our competitors:
- Your inquiry which related to our products, will be replied within 24 hours;
- Your inquiry will be answered by our well-trained and experienced staffs in fluent English;
- OEM & ODM, any logo or brand can be added into product designing;
- Distribution rights are offered for your unique design and some our current models;
- Providing the best cost-efficient products to customers with stable quality and excellent after-sales service by our professional sales team;
- Sustainable quality improvement system and experienced R&D team to meet your various marketing and products demand;
- Fast delivery within 15 days, convenient and economic inland transportation, 45 km distance from the major Chinese seaport: Tianjin Port;
- 6 months warranty period since the date of BL (Quick-wear parts exclued)
- Flexible payment terms can be selected, TT, LC etc
Beijing ERichman Technology CO., LTD is one of the largest supplier manufacturing Electrical & battery rickshaw in China. We are a highly advanced enterprise specializing in research and development of spare parts of e-rickshaw. Presently, we are manufacturing e-rickshaw passenger type and e-rickshaw loading type. We can manufacture e-rickshaw as per the special requirements of our clients. Established in 2005, our factory is specialized in the manufacture of electric tricycles. Located in Xianghe, Langfang, we enjoy convenient access to major transportation networks. Our factory covers an area of 42,000 square meters and has around 500 staff members. Furthermore, all our products are manufactured with advanced equipment and strict QC procedures in order to ensure high quality. With stable and timely supply, credible quality and sincere service, our products sell well in both domestic and overseas markets. We are exporting to India more than 30000 pcs e rickshaw and 20 containers e rickshaw spare parts to New Delhi, India each month. Welcome to visit us.
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