轴向气室双推杆气压盘式制动器 Axial air chamber double tappets PDB序号No 轮辋规格wheel size 产品型号brake size A1 A2 B1 B2 C1 C2 D E 制动盘规格 (直径×厚度) disc size (diameter×thickness) 制动半径brake radius 制动力矩(kNm) brake torque 1 22.5 YF3501DA03 210 80 378 80 400 40 6-M16×1.5 55 Φ430×45 173.6 22 2 22.5 YF3501DA03A 326 40 406 49 4-M20×1.5 55 Φ430×45 173.6 22 3 22.5 YF3501DA03B 290 75 378 80 400 40 6-M20×1.5 55 Φ430×45 173.6 22 4 22.5 YF3501DA03C 235 80 378 80 400 40 6-M20×1.5 55 Φ430×45 173.6 22 5 22.5 YF3501DA03D 326 40 406 49 4-M20×1.5 55 Φ430×45 173.6 22 6 22.5 YF3501DA03E 220 75 378 75 400 35 6-M20×1.5 55 Φ430×45 173.6 22 7 20 YF3501DA05 266 67 341 67 360 30 6-M16×1.5 55 Φ395×45 163.8 18 8 20 YF3501DA05A 341 67 360 30 4-M18×1.5 55 Φ395×45 163.8 18 9 20 YF3501DA05B 310 67 366 35 4-M20×1.5 55 Φ395×45 163.8 18 10 20 YF3501DA05C 230 70 348 70 366 35 6-M16×1.5 55 Φ395×45 163.8 18 11 20 YF3501DA05D 210 80 340 75 370 42 6-M20×1.5 55 Φ395×45 163.8 18 12 20 YF3501DA05E 310 67 366 35 4-M20×1.5 55 Φ395×45 163.8 18 武汉元丰汽车零部件有限公司是中国最早的气压盘式制动器研发和生产厂家，占客车市场47%的份额。
经过十年的发展，公司已拥有5个系列、15个品种的气压盘式制动器，产品适用于各类客车、卡车和挂车作为国内最高水平的气压盘式制动器制造公司，元丰公司将一如既往加大产品的研发力度，提高产品的核心竞争力，为中国汽车工业的技术进步提供强有力的保证84297645Wuhan Youfin Auto Parts Co.,Ltd is the earliest enterprise developing PDBs and putting them in production. Moreover Youfin has taken 47% bus market share. With ten-year development, Youfin has developed 5 series and 15 kinds of PDBs which are available for all kinds of buses, trucks and trailers. As the domestic PDB manufacturer in highest level, Youfin will keep increasing R2、Available for wheel size less than 19.5” meeting the requirements of the Lower-mid-sized vehicle;3、Simple and reliable adjuster, steady characters，long life. Small volume, convenient for little occupied room spaceneeded,low using cost.4、Light assembly weight, low energy waste, low cost.双推杆气压盘式制动器独特优势：1、增力机构旋转面采用双滚针副，制动效率高；2、采用整体式卡钳，总成重量轻；3、改变密封位置，减小密封面积，卡钳内腔密封性好；4、采用通用制动气室，内外摩擦片可互换，备件数量少，通用性强。
The promotion of the poneumatic disc brake on the medium-heavy-sized vehicle accelerates the appearance of the double tappets PDB. YOUFIN double tappets PDB which adopting the floating-type caliper structure is designed as integral caliper. this design enhance the tightness of the caliper vessel, decrease the assembly weight of the brake greatly. Adopting the advanced processing technology, the cost and the tima of processing are reduced.The action area of the pads is increased and the transmission efficiency of braking force is improved by adopting the double tappets PDB. The wear in the movement is reduced, because the double needle assembly is used on the booster mechanism. The accurate transmission of the gear mechanism ensures the synchronization of the double tappets. Since the bush is porous-metal bush which is made of 100% copper, it has a long life and the guide pin can lubricate itself which enable the caliper to slide smoothly without any stagnancy. The design of plug pin structure with the clamping plate makes the replacing of the pads convenient. The product has been gained the patent certificate , and the ID is 200620099778.3 , 200610124936.0.The advantages of the double tappets PDB:1、High brake efficiency by adopting the double needle assembly on the rotating surface of booster mechanism;2、Light assembly weight by adopting integral caliper;3、Excellent tightness of the caliper vessel by altering the sealing place and reducing the sealing area;4、Good commonality and fewer spare parts by adopting the common air chamber, and interchangeable pads.径向气室双推杆气压盘式制动器 Radial air chamber double tappets PDB序号No 轮辋 规格 Wheel size 产品型号 brake size A1 A2 B1 B2 C1 C2 D E 制动盘规格 (直径×厚度) Discsize (diameter×thickness) 制动半径 brake radius 制动力矩(kNm) brake torque 1 22.5 YF3502DR01 326 40 406 49 4-M20×1.5 55 Φ430×45 173.6 22 2 22.5 YF3502DR01A 220 87 380 87 408 42 6-M16×1.5 55 Φ430×45 175.5 22 3 22.5 YF3502DR01B 235 80 378 80 400 40 6-M20×1.5 55 Φ430×45 175.5 22 4 22.5 YF3502DR01C 294 76 380 87 408 42 6-M18×1.5 55 Φ430×45 173.6 22 5 20 YF3502DR02 275 78 348 78 366 45 6-M16×1.5 48 Φ395×34 163.8 13 序号No. 轮辋规格wheelsize 产品型号brake size A1A2 B1 B2C1C2D E制动盘规格 （直径×厚度）disc size(diameter×thickness) 制 动半 径brake radius制 动 力矩 brake torque (kNm) 1 17.5 YF3501AD01 228 64 288 64310366-M14×1.541Φ330×34 127 10 2 19.5 YF3502AD02 266 67 341 67360306-M16×1.556Φ385×45 152 13 3 16 YF3501AD04 236 56 282 26 4-M16×1.539Φ296×34 112 7 单推杆气压盘式制动器 Single tappet PDB轴向气室双推杆气压盘式制动器 Axial air chamber double tappets PDB径向气室双推杆气压盘式制动器 Radial air chamber double tappets PDB双推杆气压盘式制动器Double tappet PDB气压盘式制动器在中重型车辆上的推广，推动了双推杆气压盘式制动器的出现。
武汉元丰双推杆气压盘式制动器，采用浮动钳结构，设计为整体式卡钳体整体式卡钳有效提高了制动器腔体密封性，大幅降低制动器总成重量，采用先进的加工工艺，缩短加工时间和成本双推杆制动器有利于增加了作用在摩擦片上的作用面积，提高制动力传递效率增力机构采用双滚针副配合，减小运动磨损双推杆的同步采用齿轮机构保证传动精确全铜带孔衬套， 实现导销自润滑，使用寿命长，卡钳滑动平稳无拖滞压板插销结构，摩擦片更换快捷方便该产品已经申请专利，专利号：200620099778.3 , 200610124936.0。