duplex Sprockets with hub (B)28B-2 | 28B roller chain sprockets | double strand sprockets

Categories	Sprockets With Hub
Trademark/Brand	ZMIE Chain Manufacturer
Material：	Carbon Steel C45
Heat Treatment：	Through hardening
Color:	Zincplated,Nickel Plated,Black Finished
Shipping:	Support Sea freight.Express.Land freight.
FOB port	Shanghai/Ningbo
Terms of Payment	L/C, Western Union, T/T, Paypal
Update Time	Nov 1,2025

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Detail Information

Duplex sprockets with hub (B)28B-2 (44.45X30.99mm) | 28b roller chain sprockets | double strand sprockets

Pitch		44.45
Rollerφ		27.94
r		44
C		5
h1		29.4
L		28.8
h2		88.4

Z	De	Dp	Duplex
	De	Dp	d	D	H
	mm	mm	mm	mm	mm
8	132.0	116.15	74	25	120
9	148.4	129.96	88	25	120
10	162.3	143.85	100	25	120
11	176.3	157.77	112	25	120
12	189.3	171.74	125	25	120
13	204.2	185.75	130	25	120
14	218.2	199.76	130	25	120
15	232.3	213.79	145	30	120
16	246.3	227.84	160	30	120
17	260.0	241.90	160	30	120
18	274.0	255.98	160	30	120
19	289.0	270.06	180	30	120
20	303.0	284.15	180	30	120
21	317.0	298.24	180	30	120
22	331.0	312.34	180	30	120
23	345.0	326.44	180	30	120
24	359.0	340.55	180	30	120
25	373.0	354.66	180	30	120
26	387.0	368.77	180	30	120
27	401.0	382.88	180	30	120
28	416.0	397.00	180	30	120
29	430.0	411.12	180	30	120
30	444.0	425.24	180	30	120
31	458.0	439.37	200	30	120
32	472.0	453.49	200	30	120
33	486.0	467.62	200	30	120
34	500.0	481.75	200	30	120
35	514.0	495.88	200	30	120
36	529.0	510.01	200	30	120
37	543.0	524.13	200	30	120
38	557.0	538.27	200	30	120
39	571.0	552.40	200	30	120
40	585.0	566.54	200	30	120
45	656.0	637.22	200	40	150
50	726.0	707.91	200	40	150
57	825.0	806.90	200	40	150
60	869.0	849.32	/	/	/
76	1095.0	1075.62	200	40	150

Zmie has 2 kinds of sprockets, one is a plate wheel, flat and no hub, they are usually mounted on flanges or hubs of the device they are driving through a series of holes that ae plain or tapered.

Zmie sprockets has a wide range of standard sprockets, convering sprockets and plate wheels in sizes 03 B-1 to 32 B-3. Furthermore, Zmie provides fully finished bore sprockets manufactured according to customer designs and drawings.

KeyWords

duplex Sprockets with hub (B)28B-2 | 28B roller chain sprockets | double strand sprockets

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