Premium 03B Roller Chain

03B metric roller chain is the smallest and most precision metric chain within the ISO British Standards classification. We typically supply 03B-1 chain in 10ft boxes but it is also available in 5-meter boxes and larger length reels upon request. Our metric chains are made utilizing heat-treated precision components for maximum performance and durability, they are also shot-peened and pre-stressed at the factory to improve shock load capacity and reduce chain stretch during use. For additional information, or to get a quote please contact us and our customer service team will be happy to assist you!

03B Chain Dimensions

• Chain Size: 03B
• Pitch (P): 5.00mm
• Inner Width (W): 2.5mm
• Roller Diameter (D): 3.2mm
• Pin Diameter (E): 1.49mm
• Plate Depth (H): 4.1mm
• Connecting Pin Length (A): 7.4mm
• Breaking Load: 2.4 kN
• Weight: 0.08 kg/m

03B Chain Accessories

03B Connecting Link	03B Offset Link	03B Chain Preaker	03B Chain Puller	Roller Chain Lubricant

03B Chain Sprockets

We supply a wide range of 03B metric chain sprockets, for more information or pricing please contact us and we will be happy to assist you.

03B A-plate Sprockets

Sprocket Size	Tooth Count	Outside Diameter (OD)	Pitch Diameter (PD)	Stock Bore (ID)	Sprocket Weight
03A41	41	67.5mm	65.31mm	8mm	0.04 kg
03A42	42	69.1mm	66.91mm	8mm	0.05 kg
03A43	43	70.6mm	68.49mm	8mm	0.06 kg
03A44	44	72.2mm	70.09mm	8mm	0.07 kg
03A45	45	73.8mm	71.68mm	8mm	0.08 kg
03A46	46	75.4mm	73.27mm	8mm	0.09 kg
03A47	47	77.0mm	74.86mm	8mm	0.10 kg
03A48	48	78.6mm	76.45mm	8mm	0.11 kg
03A49	49	80.2mm	78.03mm	8mm	0.12 kg
03A50	50	81.8mm	79.63mm	8mm	0.13 kg
03A51	51	83.4mm	81.22mm	10mm	0.14 kg
03A52	52	85.0mm	82.81mm	10mm	0.15 kg
03A53	53	86.6mm	84.40mm	10mm	0.16 kg
03A54	54	88.1mm	85.97mm	10mm	0.17 kg
03A55	55	89.7mm	87.58mm	10mm	0.18 kg
03A56	56	91.3mm	89.17mm	10mm	0.19 kg
03A57	57	92.9mm	90.76mm	10mm	0.20 kg
03A58	58	94.5mm	92.35mm	10mm	0.21 kg
03A59	59	96.1mm	93.94mm	10mm	0.22 kg
03A60	60	97.7mm	95.53mm	10mm	0.23 kg
03A62	62	100.9mm	98.72mm	12mm	0.24 kg
03A64	64	104.1mm	101.90mm	12mm	0.25 kg
03A65	65	105.6mm	103.49mm	12mm	0.26 kg
03A66	66	107.2mm	105.08mm	12mm	0.27 kg
03A68	68	110.4mm	108.26mm	12mm	0.28 kg
03A70	70	113.6mm	111.44mm	12mm	0.29 kg
03A72	72	116.8mm	114.63mm	12mm	0.30 kg
03A75	75	121.6mm	119.40mm	12mm	0.31 kg
03A76	76	123.1mm	120.99mm	12mm	0.32 kg
03A78	78	126.3mm	124.17mm	12mm	0.33 kg
03A80	80	129.5mm	127.35mm	12mm	0.34 kg
03A85	85	137.5mm	135.31mm	14mm	0.35 kg
03A90	90	145.4mm	143.27mm	14mm	0.36 kg
03A95	95	153.4mm	151.22mm	14mm	0.37 kg
03A100	100	161.3mm	159.18mm	14mm	0.38 kg
03A110	110	177.2mm	175.09mm	14mm	0.39 kg
03A114	114	183.6mm	181.46mm	14mm	0.40 kg
03A120	120	193.2mm	191.01mm	14mm	0.41 kg
03A125	125	201.1mm	198.96mm	14mm	0.42 kg

03B B-Hub Sprockets

Sprocket Size	Outside Diameter (OD)	Pitch Diameter (PD)	Hub Diameter (H)	Stock Bore (ID)	Length Thru Bore (L)	Weight
03B8	15.2mm	13.06mm	7mm	4mm	10mm	0.005 kg
03B9	16.8mm	14.62mm	8mm	5mm	10mm	0.006 kg
03B10	18.3mm	16.18mm	9mm	5mm	10mm	0.008 kg
03B11	19.9mm	17.75mm	11mm	6mm	10mm	0.011 kg
03B12	21.5mm	19.32mm	12mm	6mm	10mm	0.015 kg
03B13	23.0mm	20.89mm	14mm	6mm	10mm	0.021 kg
03B14	24.6mm	22.47mm	15mm	6mm	10mm	0.023 kg
03B15	26.2mm	24.04mm	16mm	6mm	10mm	0.025 kg
03B16	27.8mm	25.63mm	18mm	8mm	13mm	0.032 kg
03B17	29.4mm	27.20mm	18mm	8mm	13mm	0.035 kg
03B18	30.9mm	28.79mm	18mm	8mm	13mm	0.037 kg
03B19	32.5mm	30.38mm	18mm	8mm	13mm	0.039 kg
03B20	34.1mm	31.96mm	20mm	8mm	13mm	0.040 kg
03B21	35.7mm	33.54mm	20mm	8mm	13mm	0.056 kg
03B22	37.3mm	35.13mm	20mm	8mm	13mm	0.059 kg
03B23	38.9mm	36.72mm	20mm	8mm	13mm	0.063 kg
03B24	40.5mm	38.30mm	20mm	8mm	13mm	0.065 kg
03B25	42.0mm	39.89mm	20mm	8mm	13mm	0.068 kg
03B26	43.6mm	41.48mm	25mm	8mm	15mm	0.095 kg
03B27	45.2mm	43.07mm	25mm	8mm	15mm	0.105 kg
03B28	46.8mm	44.65mm	25mm	8mm	15mm	0.106 kg
03B29	48.4mm	46.25mm	25mm	8mm	15mm	0.107 kg
03B30	50.0mm	47.83mm	25mm	8mm	15mm	0.109 kg
03B31	51.6mm	49.42mm	30mm	8mm	15mm	0.110 kg
03B32	53.2mm	51.01mm	30mm	8mm	15mm	0.112 kg
03B33	54.8mm	52.60mm	30mm	8mm	15mm	0.115 kg
03B34	56.3mm	54.19mm	30mm	8mm	15mm	0.120 kg
03B35	57.9mm	55.78mm	30mm	8mm	15mm	0.125 kg
03B36	59.5mm	57.37mm	30mm	8mm	15mm	0.130 kg
03B37	61.1mm	58.96mm	30mm	8mm	15mm	0.136 kg
03B38	62.7mm	60.54mm	30mm	8mm	15mm	0.140 kg
03B39	64.3mm	62.13mm	30mm	8mm	15mm	0.144 kg
03B40	65.9mm	63.73mm	30mm	8mm	15mm	0.145 kg