28B Metric Roller Chain Sprockets

Experience superior performance with Raydafon Group's 28B Metric Roller Chain Sprockets, crafted for durable power transmission in industrial machinery. Precision-engineered from high-grade steel, they offer unmatched reliability and smooth operation, ideal for engineers and manufacturers seeking efficiency. Enjoy reduced downtime and enhanced productivity—choose Raydafon Group for industry-leading quality and innovative design.

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Product Description

28B roller chain sprockets are manufactured for metric 28B roller chain and is manufactured in accordance with ISO, DIN, and BS228 standards. All of our sprockets are precision manufactured from high-quality steel, and the majority of them are black oxide coated, and have hardened teeth on tooth counts 30 or less. Something important to know note is that on tooth counts 31 and up hardened teeth make little to no performance increase, this is why it is not standard. 28B Metric Roller Chain Sprockets

28B A-Plate Sprockets

Sprocket Size	Tooth Count	Pitch Diameter	Stock Bore	Sprocket Weight (kg)
28A11	11	157.77mm	32mm	3.18
28A12	12	171.74mm	32mm	3.95
28A13	13	185.74mm	32mm	4.31
28A14	14	199.76mm	32mm	4.77
28A15	15	213.79mm	40mm	5.45
28A16	16	227.84mm	40mm	6.81
28A17	17	241.91mm	40mm	7.71
28A18	18	255.98mm	40mm	8.63
28A19	19	270.06mm	40mm	9.53
28A20	20	284.14mm	40mm	10.44
28A21	21	298.24mm	40mm	11.79
28A22	22	312.34mm	40mm	13.17
28A23	23	326.44mm	40mm	14.06
28A24	24	340.54mm	40mm	15.44
28A25	25	354.65mm	40mm	16.78
28A26	26	368.77mm	40mm	18.61
28A27	27	382.88mm	40mm	20.43
28A28	28	397.00mm	40mm	20.88
28A29	29	411.12mm	40mm	23.06
28A30	30	425.24mm	40mm	25.17
28A32	32	453.49mm	40mm	31.02
28A38	38	538.27mm	40mm	48.58
28A40	40	566.54mm	40mm	52.80
28A42	42	594.81mm	40mm	57.02
28A45	45	637.22mm	40mm	63.35
28A48	48	679.63mm	40mm	69.68
28A54	54	764.47mm	40mm	82.34
28A57	57	806.89mm	40mm	88.67
28A60	60	849.32mm	40mm	97.97
28A68	68	962.47mm	40mm	122.79
28A72	72	1019.04mm	40mm	135.19
28A76	76	1075.62mm	40mm	147.60
28A95	95	1344.39mm	40mm	206.53
28A96	96	1358.53mm	40mm	209.63
28A114	114	1613.18mm	40mm	265.46

28B B-Hub Sprockets

Sprocket Size	Tooth Count	Pitch Diameter	Stock Bore	Max. Bore	Hub Diameter (H)	Length Thru Bore (L)	Weight (kg)
28B11	11	157.77mm	40mm	73mm	112mm	70mm	5.27
28B12	12	171.74mm	40mm	84mm	125mm	70mm	6.40
28B13	13	185.74mm	40mm	93mm	140mm	70mm	8.22
28B14	14	199.76mm	40mm	93mm	140mm	60mm	9.13
28B15	15	213.79mm	40mm	108mm	160mm	60mm	11.40
28B16	16	227.84mm	40mm	108mm	160mm	64mm	12.76
28B17	17	241.91mm	40mm	108mm	160mm	64mm	13.65
28B18	18	255.98mm	40mm	108mm	160mm	64mm	15.01
28B19	19	270.06mm	40mm	108mm	160mm	64mm	16.84
28B20	20	284.14mm	40mm	108mm	160mm	64mm	18.19
28B21	21	298.24mm	40mm	108mm	160mm	64mm	19.11
28B22	22	312.34mm	40mm	108mm	160mm	64mm	20.46
28B23	23	326.44mm	40mm	108mm	160mm	64mm	21.84
28B24	24	340.54mm	40mm	108mm	160mm	64mm	22.73
28B25	25	354.65mm	40mm	108mm	160mm	64mm	26.83
28B26	26	368.77mm	40mm	108mm	160mm	64mm	27.74
28B27	27	382.88mm	40mm	108mm	160mm	64mm	30.29
28B28	28	397.00mm	40mm	108mm	160mm	64mm	31.74
28B29	29	411.12mm	40mm	108mm	160mm	64mm	32.73
28B30	30	425.24mm	40mm	108mm	160mm	64mm	34.84
28B32	32	453.49mm	40mm	134mm	180mm	76mm	51.25

28B C-Hub Sprockets

Sprocket Size	Tooth Count	Pitch Diameter	Stock Bore	Max. Bore	Hub Diameter (H)	Length Thru Bore (L)	Weight (kg)
28C38	38	538.27mm	40mm	134mm	178mm	102mm	52.84
28C40	40	566.54mm	40mm	134mm	178mm	102mm	54.43
28C42	42	594.81mm	40mm	134mm	178mm	102mm	60.55
28C45	45	637.22mm	40mm	134mm	178mm	102mm	62.72
28C48	48	679.63mm	40mm	134mm	178mm	102mm	74.60
28C54	54	764.47mm	40mm	134mm	178mm	127mm	81.77
28C57	57	806.89mm	40mm	134mm	178mm	127mm	88.94
28C60	60	849.32mm	40mm	134mm	178mm	127mm	108.05
28C68	68	962.47mm	40mm	134mm	191mm	127mm	117.61
28C72	72	1019.04mm	40mm	134mm	191mm	127mm	127.17
28C76	76	1075.62mm	40mm	134mm	191mm	127mm	127.17
28C95	95	1344.39mm	40mm	134mm	191mm	127mm	172.57
28C96	96	1358.53mm	40mm	134mm	191mm	127mm	174.96
28C114	114	1613.18mm	40mm	134mm	191mm	127mm	217.97

28B Taper Bushed Sprockets

Sprocket Size	Tooth Count	Pitch Diameter	Bushing Size	Max. Bushing Bore	(L)	(C)	Sprocket Weight (kg)	Bushing Weight (kg)
28BTB11H	11	157.80mm	2517	63.50mm	44.45mm	107.95mm	3.53	1.59
28BTB12H	12	170.80mm	2517	63.50mm	44.45mm	107.95mm	3.86	1.59
28BTB13H	13	185.80mm	3020	76.20mm	50.80mm	133.35mm	5.90	2.95
28BTB14H	14	199.80mm	3020	76.20mm	50.80mm	133.35mm	7.04	2.95
28BTB15H	15	213.80mm	3020	76.20mm	50.80mm	133.35mm	8.17	2.95
28BTB16H	16	227.90mm	3020	76.20mm	50.80mm	133.35mm	9.79	2.95
28BTB17H	17	241.90mm	3020	76.20mm	50.80mm	133.35mm	11.35	2.95
28BTB18H	18	256.00mm	3020	76.20mm	50.80mm	133.35mm	12.49	2.95
28BTB19H	19	270.10mm	3020	76.20mm	50.80mm	133.35mm	13.62	2.95
28BTB20H	20	284.10mm	3020	76.20mm	50.80mm	133.35mm	14.30	2.95
28BTB21H	21	298.30mm	3020	76.20mm	50.80mm	133.35mm	14.98	2.95
28BTB22H	22	312.30mm	3020	76.20mm	50.80mm	133.35mm	16.91	2.95
28BTB23H	23	326.40mm	3020	76.20mm	50.80mm	133.35mm	18.84	2.95
28BTB24H	24	340.50mm	3020	76.20mm	50.80	133.35mm	20.77	2.95
28BTB25H	25	354.70mm	3020	76.20mm	50.80	133.35mm	22.70	2.95
28BTB26H	26	368.80mm	3020	76.20mm	50.80	133.35mm	24.63	2.95
28BTB27H	27	382.90mm	3020	76.20mm	50.80	133.35mm	26.56	2.95
28BTB28H	28	397.00mm	3020	76.20mm	50.80	133.35mm	28.49	2.95
28BTB30H	30	425.20mm	3020	76.20mm	50.80	133.35mm	32.35	2.95
28BTB32H	32	453.49mm	3020	76.20mm	50.80	133.35mm	36.21	2.95

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