Beiben Drum Brake Midbridge

The Beiben Drum Brake Midbridge is a complex assembly consisting of various components.
At its core is the rear axle assembly, which connects to the main retarder assembly.
The model board, press spring, fork, York rod, screw, nut, piston, O-ring, seal washer, and working cylinder work together to generate braking force.

Product Parameters of Beiben Drum Brake Midbridge

Other important components include the bolt, seal ring, press switch, screw plug, adjusting shim, column pin, axle housing assembly, plug, snap ring, pin assembly, differential housing, and column pin.
The midbridge’s design is optimized for durability and performance, making it an ideal solution for heavy-duty applications.

ID#	Part Name English	Part Number	Quantity	Overall Dimensions（mm）	Weight（kg）
1	Rear axle assembly	560 350 60 00	1	2454475674	750
2	Main retarder assy	500 350 38 20	1	2454475674	750
3	Model board	505 584 13 24	1	50*40	0.1
4	Press spring	346 993 09 01	1	Φ40*60	0.1
5	Fork	355 353 02 34	1	12615528	0.6
6	York rod	346 353 05 35	1	2828114	0.4
7	Screw	M 100073 010131	1	Φ12*40	0.2
8	Nut	M 106172 010001	1	Φ12*20	0.1
9	Piston	346 353 01 57	1	Φ45*16	0.165
10	O ring	001 997 22 45	1	Φ36*5	0.1
11	Seal washer	355 353 03 80	1	Φ100*2	0.1
12	Working cylinder	346 353 06 55	1	87.57566.5	0.35
13	Bolt	M 105782 008114	3	Φ10*90	0.1
14	Seal ring	N 007603 018100	1	Φ10*5	0.1
15	Press switch	001 545 47 14	1	Φ30*35	0.1
16	Bolt	M 105785 014031	12	Φ16*85	0.1
17	Bolt	M 105786 012064	16	Φ14*55	0.1
18	Screw plug	186 997 00 32	2	Φ25*15	0.1
19	Adjusting shim	346 353 09 52-14 52-16 52		Φ310*1	0.1
20	Bolt	000 990 62 04	18	Φ16*65	0.1
21	Column pin	M 100119 080029	4	Φ10*20	0.1
22	Bolt	942 990 16 04	4	Φ18*110	0.1
23	Axle housing assy	260 350 05 20	1	2121300410	226
24	Screw plug	186 997 00 32	2	Φ25*15	0.1
25	Plug	383 351 00 65	1	Φ14*38	0.1

ID#	Part Name English	Part Number			Quantity	Overall Dimensions（mm）	Weight（kg）
25	Plug		383 351	00 65	1	Φ14*38	0.1
26	Snap ring	N	912009	025100	2	Φ25*2	0.1
27	Pin assembly		355 350	00 55	2	Φ25*36	0.1
28	Differential housing		395 350	47 20	1	538354265	45
29	Column pin		355 997	00 10	1	Φ25*40	0.1
30			942 353	01 17	1	Φ93*32	0.1
31	Small gear shell		346 353	03 07	1	551360155	41
32	Cover		346 353	02 08	1	551360180	25
33	Press spring		346 993	09 01	1	Φ40*60	0.1
34	Differential gear sleeve		346 353	09 36	1	Φ118×38.5	1.015
	Differential gear sleeve		346 353	00 39	1	Φ118×38.5	1.215
35	Elastic check ring		352 994	00 39	1	Φ245×5	0.1
36	Fork		346 353	02 34	1	11217028	0.77
37	York rod		346 353	05 35	1	2828114	0.4
38	Screw	M	100073	010131	1	Φ12×40	0.1
39	Nut	M	106172	010001	1	Φ12×15	0.1
40	Piston		346 353	01 57	1	Φ45*16	0.165
41	O ring		001 997	22 45	1	Φ36*5	0.1
42	Seal washer		355 353	03 80	1	80810.5	0.001
43	Bolt	M	105782	008114	3	Φ10*85	0.1
44	Working cylinder		346 353	06 55	1	87.57566.5	0.35
45	Press switch		001 545	47 14	1	Φ30*35	0.1
46	Seal ring	N	007603	018100	1	Φ10*5	0.1
50	Nut		385 351	05 72	1	Φ77*22	0.253

ID#	Part Name English		Part Number				Quantity	Overall Dimensions（mm）	Weight （kg）
51	Flange assy		346	353	15	45	1	180X180X75	4
52	Protective cap		346	353	00	90	1	Φ113*18	0.1
53	Seal ring		017	997	28	47	1	Φ110*15	0.1
	Seal ring		017	997	29	47	1	Φ110*15	0.1
54	Adjusting	Nut	346	353	08	25	1	Φ142*32	0.984
55	Retainer		352	353	00	73	1	445025	0.034
56	Nut		M 105783 008044				1	Φ10*24	0.1
57	Ball bearing		N 000625 920066				1	Φ80*20	1
58	Ball bearing		N 000625 036216				1	Φ80*20	1
59	Slofted nut		500	356	02	26	1	Φ80*14	0.45

60	Lock sheet		500	356	00	73	1	Φ81*10	0.03
61	Ball bearing		545	981	00	24	1	Φ128*22	2
62	Seal ring		017	997	31	47	1	Φ95*10	0.4
63	Seal ring		017	997	30	47	1	Φ95*10	0.4
64	Nut		346	353	09	25	1	Φ114*27	0.522
65	Through drive shaft		500	353	00	35	1	Φ46*395.5	8.5
66	Retainer		352	353	00	73	1	445025	0.034
67	Nut		M 105783 008044				1	Φ10*15	0.01
68	Bolt		M 105785 012091				12	Φ14*90	0.01
69	Differentialhousingassembly		346	350	23	27	1	Φ195X85	7

ID#	Part Name English	Part Number	Quantity	Overall Dimensions（mm）	Weight （kg）
70	Thrust washer	346 353 24 62	1	Φ110*2.35	0.066
71	Rear through shaft gear assy	346 350 05 26	1	124X124X56	1.6
72	Bush	346 353 06 50	1	Φ57*41	0.164
73	Slofted nut	346 353 03 26	1	Φ80*16	0.2
74	Cross joint	659 353 00 20	1	Φ195X30	2.15
75	Bush	346 353 04 50	1	Φ75*53.5	0.391
76	Gear	659 353 00 14	4	77X77x20	0.451
77	Sphere shim	346 353 02 24	4	Φ65*7	0.0222
78	Front through shaft gear	346 350 11 24	1	210X210X60	7.2
79	Washer	346 353 17 62	1	Φ84*4	0.053
	Washer	346 353 18 62	1	Φ84*4	0.053
	Washer	346 353 19 62	1	Φ84*4	0.053
	Washer	346 353 26 62	1	Φ84*4	0.053
80	Joint sleeve	346 353 08 36	1	Φ118X31.5	1.015
81	Front through shaft	346 353 07 35	1	Φ368.5X70	10
82	Nut	385 351 05 72	1	Φ77*22	0.253
83	gear	346 353 00 85	1	200X200X54	9.99
84	Column pin	M 100119 120169	2	Φ12*30	0.1
85	Roller bearing	003 981 70 05	1	Φ140*51	4.8
86	Adjusting shim	346 353 13 77-94 77	1	Φ80*6	0.078

ID#	Part Name English	Part Number	Quantity	Overall Dimensions（mm）	Weight （kg）
87	Spacer sleeve	346 353 03 50	1	Φ80*60	0.607
88	Roller bearing	003 981 29 05	1	Φ150*54	5.82
89	Gear	346 350 29 39	1	320X315X315	16.3
	Drived gear	346 353 45 12	1	—	—
	Main driving gear	346 353 45 10	1	—	—
90	Thread ring	652 353 00 25	1	Φ128×26	0.525
91	Roller bearing	003 981 32 05	2	Φ125×37	2.27
92	Bolt	346 990 31 01	16	Φ16×40	0.1
93	Bolt	000 990 67 04	12	Φ16×110	0.1
94	Differential assy	346 350 81 23	1	Φ309.8×263	26.85
95	Oil seal	942 353 00 80	1	Φ65×7.2	0.1
96	Thread ring	346 350 04 43	1	Φ128×26	0.825
97	Retainer	346 333 00 73	2	404220	0.1
98	Bolt	M 105783 008044	2	Φ10×20	0.1
99	Sphere shim	346 353 01 24	4	Φ70*7	0.0223
100	Gear	346 353 19 14	4	89X89X15	0.85
104	Half shaft gear	346 353 08 15	2	200X200X87	1.8
105	Cross joint	346 353 04 20	1	Φ188X28	1.8
106	Rear axle half shaft	260 357 00 01	1	Φ45 X 1095	14
	Rear axle half shaft	260 357 01 01	1	Φ45 X 1095	14
107	Spring gasket	N000983 045000	2
108	Spring gasket	M 100893 105001	2

ID#	Part Name English	Part Number	Quantity	Overall Dimensions（mm）	Weight（kg）
	Compensated washer	355 354 08 52	On demand
	Compensated washer	489 354 01 52	On demand
110	Washer	346 354 16 62	4
111	Sun gear	346 354 05 17	2	89X89X44	1.325
112	Snap ring	N009045 050001	2
113	Lock sheet	346 356 00 73	2	Φ110*9	0.047
114	Slofted nut	346 356 01 26	4	Φ106*10	0.207
115	Gear ring	355 354 13 12	2	26226281.5	2
116	Bracket	355 354 19 09	2	24024069	11
117	Elastic check ring	346 994 04 39	2
118	Roller bearing	004 981 07 05	1
119	O ring	016 997 95 48	2
120	Hub	505 356 23 01	2	375375219	30
121	Bolt	500 401 00 71	20
122	Oil splasher	505 356 01 82	2	29029078	0.7
123	Roller bearing	007 981 00 05	1
124	Cover	346 356 00 27	2	Φ174*2	0.107
125	Oil seal	020 997 39 47	2
126	Pin	346 354 00 74	10	404086	0.6
127	Washer	346 354 13 62	20	60563	0.056
128	Roller needle	000 981 79 87	500
129	Washer	355 354 01 62	10	Φ44.9*4.3	0.017
130	Planetary gear	346 354 05 16	10	848444	1.25

ID#	Part Name English	Part Number	Quantity	Overall Dimensions（mm）	Weight （kg）
131	Bell hub assy	346 350 15 33	2	363363273	28
132	Seal ring	N007603 024106	2	Φ24X29	0.5
133	Screw plug	624 997 00 32	2
134	Screw plug	355 997 02 32	2
135	Seal ring	N007603 045100	2
136	Bolt	500 990 64 04	20
137	End cover	624 356 00 20	2	Φ276*31	2.724
138	Seal washer	500 356 00 80	2
139	Bolt	624 354 01 71	10
140	Bolt	N000912 012219	10
141	Planetary reducer assembly	346 350 06 09	2	363X363X75	31

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