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• Spur Gears - Precision
• PSG : 0.5 Module Steel Precision Spur Gears
• PSG : 0.8 Module Steel Precision Spur Gears
• PSG : 1.0 Module Steel Precision Spur Gears
• PSG : 1.25 Module Steel Precision Spur Gears
• PSG : 1.5 Module Steel Precision Spur Gears
• PSG : 2.0 Module Steel Precision Spur Gears
• PSG : 2.5 Module Steel Precision Spur Gears
• PSG : 3.0 Module Steel Precision Spur Gears
• PSG : 0.5 Module Stainless Precision Spur Gears
• PSG : 0.8 Module Stainless Precision Spur Gears
• PSG : 1.0 Module Stainless Precision Spur Gears
• PSG : 1.25 Module Stainless Precision Spur Gears
• PSG : 1.5 Module Stainless Precision Spur Gears
• PSG : 2.0 Module Stainless Precision Spur Gears
• PSG : 2.5 Module Stainless Precision Spur Gears
• PSG : 3.0 Module Stainless Precision Spur Gears
• PSG : 0.5 Module Skive Hobbed Precision Spur Gears
• PSG : 0.8 Module Skive Hobbed Precision Spur Gears
• PSG : 1.0 Module Skive Hobbed Precision Spur Gears
• PSG : 1.25 Module Skive Hobbed Precision Spur Gears
• PSG : 0.5 Module Plastic Precision Spur Gears
• PSG : 0.8 Module Plastic Precision Spur Gears
• PSG : 1.0 Module Plastic Precision Spur Gears
• PSG : 1.25 Module Plastic Precision Spur Gears
• PSG : 1.5 Module Plastic Precision Spur Gears
• PSG : 2.0 Module Plastic Precision Spur Gears
• PSG : 2.5 Module Plastic Precision Spur Gears
• PSG : 3.0 Module Plastic Precision Spur Gears
• PSG : 0.5 Module Titanium Precision Spur Gears
• PSG : 0.8 Module Titanium Precision Spur Gears
• PSG : 1.0 Module Titanium Precision Spur Gears
• PSG : 1.25 Module Titanium Precision Spur Gears
• PSG : 1.5 Module Titanium Precision Spur Gears
• PSG : 1.5 Module Cast Iron Precision Spur Gears
• PSG : 2.0 Module Cast Iron Precision Spur Gears
• PSG : 2.5 Module Cast Iron Precision Spur Gears
• PSG : 3.0 Module Cast Iron Precision Spur Gears
• Precision Anti-Backlash Spur Gears
• Precision Pinion Shafts
• Precision Gear Racks
• Precision Parallel Helical Gears
• Precision Crossed Helical Gears
• Precision Worms & Wheels
• Precision Anti-Backlash Worms & Wheels
• Precision Bevel Gears
• Commercial Gears
• Pulleys, Belts & Sprockets
• Couplings
• Linear
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PSG : 0.5 Module Steel Precision Spur Gears

Part Number	No. of Teeth Z	Ref. Dia. d	Tip Dia. da	Bore H7 di	Max Bore di	Hub Dia. BD	Backlash (mm) jt.e (max)	Backlash (mm) jt.i (min)	I Inertia kgm2	Mass kg	817M40T (28HRC)				Case Hardened 805M20 (58HRC)#
											T2 Nm n2100min-1	Cost PSG	Quantity	Add to Basket	T2 Nm n2100min-1	Cost PSG-H	Quantity	Add to Basket
PSG0.5-18	18	9.0	10.0	3	3	7	0.083	0.029	4.38 x 10-8	0.005	0.25	£11.40			0.93	£18.81
PSG0.5-19	19	9.5	10.5	4	4	8	0.076	0.037	6.10 x 10-8	0.005	0.27	£11.53			0.98	£19.02
PSG0.5-20	20	10.0	11.0	4	4	8	0.076	0.037	6.81 x 10-8	0.006	0.36	£11.75			1.11	£19.38
PSG0.5-21	21	10.5	11.5	4	4	8	0.077	0.036	7.64 x 10-8	0.006	0.37	£11.87			1.16	£19.58
PSG0.5-22	22	11.0	12.0	4	4	8	0.077	0.036	8.60 x 10-8	0.006	0.39	£12.02			1.22	£19.83
PSG0.5-23	23	11.5	12.5	4	4	8	0.077	0.036	9.69 x 10-8	0.006	0.41	£12.16			1.27	£20.08
PSG0.5-24	24	12.0	13.0	5	5	10	0.077	0.036	1.51 x 10-7	0.008	0.43	£12.31			1.33	£20.31
PSG0.5-25	25	12.5	13.5	5	5	10	0.087	0.042	1.65 x 10-7	0.009	0.44	£12.42			1.38	£20.52
PSG0.5-26	26	13.0	14.0	5	5	10	0.087	0.042	1.81 x 10-7	0.009	0.54	£12.61			1.44	£20.81
PSG0.5-27	27	13.5	14.5	5	5	10	0.087	0.042	1.98 x 10-7	0.009	0.57	£12.75			1.50	£21.03
PSG0.5-28	28	14.0	15.0	5	5	10	0.087	0.042	2.18 x 10-7	0.010	0.59	£12.87			1.55	£21.25
PSG0.5-29	29	14.5	15.5	6	6	13	0.087	0.042	3.76 x 10-7	0.013	0.61	£12.96			1.61	£21.38
PSG0.5-30	30	15.0	16.0	6	6	13	0.087	0.042	4.00 x 10-7	0.014	0.69	£13.00			1.65	£21.46
PSG0.5-32	32	16.0	17.0	6	6	13	0.087	0.042	4.57 x 10-7	0.015	0.74	£13.31			1.76	£21.98
PSG0.5-35	35	17.5	18.5	6	6	13	0.087	0.042	5.65 x 10-7	0.016	0.81	£13.77			1.93	£22.72
PSG0.5-38	38	19.0	20.0	6	8	17	0.089	0.041	1.13 x 10-7	0.026	0.87	£14.18			2.09	£23.41
PSG0.5-40	40	20.0	21.0	6	8	17	0.089	0.041	1.24 x 10-6	0.027	1.18	£14.50			2.45	£23.92
PSG0.5-42	42	21.0	22.0	6	8	17	0.089	0.041	1.37 x 10-6	0.028	1.24	£14.75			2.57	£24.35
PSG0.5-45	45	22.5	23.5	6	8	17	0.089	0.041	1.61 x 10-6	0.030	1.32	£15.21			2.75	£25.09
PSG0.5-48	48	24.0	25.0	6	8	17	0.089	0.041	1.90 x 10-6	0.032	1.41	£15.81			2.94	£26.08
PSG0.5-50	50	25.0	26.0	6	8	17	0.089	0.041	2.12 x 10-6	0.034	1.74	£15.99			3.32	£26.37
PSG0.5-52	52	26.0	27.0	6	8	17	0.097	0.046	2.38 x 10-6	0.035	1.81	£16.22			3.45	£26.74
PSG0.5-55	55	27.5	28.5	6	8	17	0.097	0.046	2.81 x 10-6	0.038	1.92	£16.54			3.65	£27.31
PSG0.5-58	58	29.0	30.0	6	8	17	0.097	0.046	3.33 x 10-6	0.040	2.02	£16.88			3.85	£27.87
PSG0.5-60	60	30.0	31.0	6	8	17	0.097	0.046	3.72 x 10-6	0.042	2.49	£17.06			4.15	£28.16
PSG0.5-62	62	31.0	32.0	8	10	20	0.098	0.044	4.72 x 10-6	0.048	2.57	£17.27			4.29	£28.51
PSG0.5-65	65	32.5	33.5	8	10	20	0.098	0.044	5.45 x 10-6	0.051	2.70	£17.65			4.50	£29.13
PSG0.5-68	68	34.0	35.0	8	10	20	0.098	0.044	6.29 x 10-6	0.054	2.82	£17.78			4.70	£29.32
PSG0.5-70	70	35.0	36.0	8	10	20	0.098	0.044	6.92 x 10-6	0.056	2.91	£17.95			4.84	£29.64
PSG0.5-72	72	36.0	37.0	8	10	20	0.098	0.044	7.61 x 10-6	0.058	2.99	£18.13			4.98	£29.91
PSG0.5-75	75	37.5	38.5	8	10	20	0.098	0.044	8.75 x 10-6	0.062	3.11	£18.27			5.19	£30.16
PSG0.5-78	78	39.0	40.0	8	10	20	0.098	0.044	1.00 x 10-5	0.065	3.24	£18.54			5.40	£30.60
PSG0.5-80	80	40.0	41.0	8	12	25	0.098	0.044	1.28 x 10-5	0.082	3.71	£18.67			5.80	£27.31
PSG0.5-82	82	41.0	42.0	8	12	25	0.098	0.044	1.38 x 10-5	0.084	3.81	£18.88			5.95	£31.14
PSG0.5-85	85	42.5	43.5	8	12	25	0.098	0.044	1.54 x 10-5	0.088	3.95	£19.06			6.16	£31.47
PSG0.5-90	90	45.0	46.0	8	12	25	0.098	0.044	1.86 x 10-5	0.095	4.18	£19.38			6.53	£31.99
PSG0.5-95	95	47.5	48.5	8	12	25	0.098	0.044	2.24 x 10-5	0.102	4.41	£19.58			6.89	£32.32
PSG0.5-100	100	50.0	51.0	10	16	30	0.098	0.044	3.00 x 10-5	0.123	4.75	£19.68			7.42	£32.46
PSG0.5-105	105	52.5	53.5	10	16	30	0.111	0.049	3.52 x 10-5	0.131	4.99	£19.93			7.79	£32.89
PSG0.5-110	110	55.0	56.0	10	16	30	0.111	0.049	4.12 x 10-5	0.139	5.22	£20.13			8.16	£33.22
PSG0.5-115	115	57.5	58.5	10	16	30	0.111	0.049	4.80 x 10-5	0.148	5.46	£20.33			8.53	£33.56
PSG0.5-120	120	60.0	61.0	10	20	35	0.111	0.049	6.11 x 10-5	0.177	5.70	£23.84			8.90	£39.32
PSG0.5-130	130	65.0	66.0	10	20	35	0.111	0.049	7.98 x 10-5	0.196	6.17	£27.34			9.65	£45.12
PSG0.5-140	140	70.0	71.0	10	20	35	0.111	0.049	1.03 x 10-4	0.217	6.65	£28.49			10.39	£47.00
PSG0.5-150	150	75.0	76.0	10	25	40	0.111	0.049	1.41 x 10-4	0.262	7.28	£31.02			11.37	£51.17
PSG0.5-160	160	80.0	81.0	10	25	40	0.111	0.049	1.77 x 10-4	0.286	7.76	£32.61			12.13	£53.82
PSG0.5-170	170	85.0	86.0	10	25	40	0.113	0.047	2.20 x 10-4	0.312	8.25	£34.44			12.89	£56.85
PSG0.5-180	180	90.0	91.0	14	30	50	0.113	0.047	2.99 x 10-4	0.385	8.73	£35.02			13.64	£57.78
PSG0.5-190	190	95.0	96.0	14	30	50	0.113	0.047	3.60 x 10-4	0.414	9.22	£36.74			14.40	£60.63
PSG0.5-200	200	100.0	101.0	14	30	50	0.113	0.047	4.31 x 10-4	0.444	9.80	£38.22			15.32	£63.06
PSG0.5-210	210	105.0	106.0	14	30	50	0.134	0.064	5.14 x 10-4	0.475	10.29	£39.38			16.08	£64.96
PSG0.5-220	220	110.0	111.0	16	40	60	0.134	0.064	6.61 x 10-4	0.570	10.78	£41.70			16.85	£68.79
PSG0.5-230	230	115.0	116.0	16	40	60	0.134	0.064	7.71 x 10-4	0.605	11.27	£43.00			17.62	£70.96
PSG0.5-240	240	120.0	121.0	16	40	60	0.134	0.064	8.95 x 10-4	0.641	11.76	£44.60			18.38	£73.59
PSG0.5-250	250	125.0	126.0	16	40	60	0.136	0.062	1.04 x 10-3	0.679	12.25	£45.85			19.15	£75.65

DIN 58405 Tooth Thickness tol.
# Quality Grades and Tolerances stated prior to heat treatment processes.
n Efficiency approx. 98%

Options
- Different number of teeth
- Modifications available on request: Other material, boring out, keyways, tapped holes, pin holes.

Accessories
- Clamping sets, screws, keys, dowel pins...

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