Sprocket (pre-drilled for taper bush) KR12B-2-Z057-3020

Designation	Dimension	Remark
z	57	number of teeth
p_t	3/4" 19.05 mm	Pitch (inch) - Dimensions for roller chain Pitch (metric) - Dimensions for roller chain
b₁	7/16" 11.68 mm	Internal width (inch) - Dimensions for roller chain Internal width (metric) - Dimensions for roller chain
d₁	12.07 mm	Roller diameter - Dimensions for roller chain
D_k	355.40 mm	Tip diameter (gearing)
D_t	345.81 mm	Pitch circle diameter (gearing)
D_n	136.00 mm	Hub diameter
D	25.00 mm	Diameter of pilot hole
L	62.00 mm	overall length
C	2.00 mm	Radius width
r	19.00 mm	Gear radius
Z_b	10.80 mm	Tooth width
h₂	30.30 mm	Tooth width

Designation	Dimension	Remark

Designation	Dimension											Roller chain
	z	D_k	D_t	D_n	D	L	r	C	Z_b	h₂	h₃	p		b₁		d₁
		mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	inch	mm	inch	mm
KR12B-2-Z015-1610	15	99,80	91,63	71,00	16,00	50,00	19,00	2,00	10,80	30,30	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-2-Z016-1610	16	105,50	97,65	77,00	20,00	50,00	19,00	2,00	10,80	30,30	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-2-Z017-1610	17	111,50	103,67	83,00	20,00	50,00	19,00	2,00	10,80	30,30	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-2-Z018-2012	18	118,00	109,71	89,00	20,00	50,00	19,00	2,00	10,80	30,30	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-2-Z019-2012	19	124,20	115,75	95,00	20,00	50,00	19,00	2,00	10,80	30,30	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-2-Z020-2517	20	129,70	121,78	100,00	20,00	50,00	19,00	2,00	10,80	30,30	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-2-Z021-2517	21	136,00	127,82	100,00	20,00	50,00	19,00	2,00	10,80	30,30	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-2-Z022-2517	22	141,80	133,86	100,00	20,00	50,00	19,00	2,00	10,80	30,30	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-2-Z023-2517	23	149,00	139,90	110,00	20,00	50,00	19,00	2,00	10,80	30,30	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-2-Z024-2517	24	153,90	145,94	110,00	20,00	50,00	19,00	2,00	10,80	30,30	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-2-Z025-2517	25	160,00	152,00	120,00	20,00	50,00	19,00	2,00	10,80	30,30	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-2-Z026-2517	26	165,90	158,04	120,00	20,00	50,00	19,00	2,00	10,80	30,30	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-2-Z027-2517	27	172,30	164,09	120,00	20,00	50,00	19,00	2,00	10,80	30,30	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-2-Z028-2517	28	178,00	170,13	120,00	20,00	50,00	19,00	2,00	10,80	30,30	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-2-Z030-2517	30	190,50	182,25	120,00	20,00	50,00	19,00	2,00	10,80	30,30	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-2-Z038-3020	38	239,00	230,69	130,00	25,00	50,00	19,00	2,00	10,80	30,30	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-2-Z045-3020	45	282,50	273,10	136,00	25,00	62,00	19,00	2,00	10,80	30,30	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-2-Z057-3020	57	355,40	345,81	136,00	25,00	62,00	19,00	2,00	10,80	30,30	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-2-Z076-3020	76	469,90	460,99	145,00	25,00	62,00	19,00	2,00	10,80	30,30	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-2-Z095-3020	95	585,10	576,17	145,00	30,00	63,00	19,00	2,00	10,80	30,30	-	19,05	3/4"	11,68	7/16"	12,07

Designation	Dimension											Roller chain
	z	D_k	D_t	D_n	D	L	r	C	Z_b	h₂	h₃	p		b₁		d₁
		mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	inch	mm	inch	mm
DKR12B-Z057-057	57	355,40	345,81	118,00	-	61,00	19,00	2,00	11,10	-	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-1-Z057	57	355,40	345,81	118,00	-	61,00	19,00	2,00	11,10	-	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-1-Z057-2517	57	355,40	345,81	118,00	-	61,00	19,00	2,00	11,10	-	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-2-Z057	57	355,40	345,81	136,00	25,00	62,00	19,00	2,00	10,80	30,30	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-2-Z057-3020	57	355,40	345,81	136,00	25,00	62,00	19,00	2,00	10,80	30,30	-	19,05	3/4"	11,68	7/16"	12,07
KR12B-3-Z057	57	355,40	345,81	140,00	25,00	75,00	19,00	2,00	10,80	-	49,80	19,05	3/4"	11,68	7/16"	12,07
KR12B-3-Z057-3020	57	355,40	345,81	140,00	25,00	75,00	19,00	2,00	10,80	-	49,80	19,05	3/4"	11,68	7/16"	12,07

Accessories have been identified for this product that require calculation or other parameters that are unknown to us for your application.
Identified accessories: Taper bush 3020. You can find a selection of them here.

Type	Designation	Brand	Full designation
12B-2	Roller chain (Duplex)	HFH	Roller chain (Duplex) 12B-2

Name	Brand	Webshop	Notice
KR12B-2-Z057-3020	HFH		Premium quality, house brand

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