Gear units Example of Tooth Quality Effect: Tooth quality is an important factor when calculating gear drives. Apart from the benefits of improved accuracy, better tooth quality also increases the torque / power capacity of the system for the same given design parameters (i.e. same rack section dimensions, material and surface heat treatment). The following example system shows the direct coloration between tooth quality and system power capacity: Tooth Form : Straight Spur Module Size : 4.0 Pinion Teeth : 25 Pinion Speed : 50 rpm Material : C45 Steel Tooth Finish : Ind. Hard Lubrication : Grease Alternatively, better tooth quality also increases the service life of the system for the same given design parameters (i.e. same rack section dimensions, material and surface heat treatment) and loadings. The following example system shows the direct coloration between tooth quality and system service life: Tooth Form : Straight Spur Module Size : 4.0 Pinion Teeth : 25 Pinion Speed : 50 rpm Material : C45 Steel Tooth Finish : Ind. Hard Lubrication : Grease Tooth Quality Max Power Life (hours) Q9 2.0 kW 15,000 Q8 2.0 kW 20,000 Q7 2.0 kW 24,000 Q6 2.0 kW 30,000 Tooth Quality Max Power Life (hours) Q9 1.5 kW 20,000 Q8 2.0 kW 20,000 Q7 2.4 kW 20,000 Q6 3.0 kW 20,000 7 Worms and Worm Wheels worm 7 .0 racks - precision range Straight Teeth CIRCULAR PITCH RACKS Module L I Teeth ha h b h11 (kg) Teeth Quality 9 Part No. Teeth Quality 10-12 Part No. 1.591 500.00 499.6 100 14.80 13.21 15 0.78 146-016-005 146-016-405 1.591 1000.00 999.6 200 14.80 13.21 15 1.55 146-016-010 146-016-410 1.591 2000.00 1999.6 400 14.80 13.21 15 3.10 146-010-020 146-010-420 3.183 500.00 499.4 50 29.70 26.52 30 3.10 146-031-005 146-031-405 3.183 1000.00 999.4 100 29.70 26.52 30 6.20 146-031-010 146-031-410 3.183 2000.00 1999.4 200 29.70 26.52 30 12.40 146-031-020 146-031-420 Teeth Straight Pressure Angle 20˚ Material Steel: EN8 650 N/mm2 Induction Hardened 50-55 HRC Module L I Teeth ha h b h11 (kg) Teeth Quality 9 Part No. Teeth Quality 10-12 Part No. 1.0 499.51 499.0 159 9.80 8.80 10 0.34 146-010-005 146-010-405 1.0 999.02 998.5 318 9.80 8.80 10 0.68 146-010-010 146-010-410 1.5 499.51 499.1 106 14.80 13.30 15 0.78 146-015-005 146-015-405 1.5 999.02 998.6 212 14.80 13.30 15 1.55 146-015-010 146-015-410 1.5 1998.05 1997.6 424 14.80 13.30 15 3.10 146-015-020 146-015-420 2.0 502.65 502.1 80 19.75 17.75 20 1.40 146-020-005 146-020-405 2.0 999.02 998.5 159 19.75 17.75 20 2.80 146-020-010 146-020-410 2.0 1998.05 1997.5 318 19.75 17.75 20 5.60 146-020-020 146-020-420 2.0 3015.92 3015.4 480 19.75 17.75 20 8.50 146-020-030 n/a NEW 2.5 502.65 502.1 64 24.75 22.25 25 2.10 146-025-005 146-025-405 2.5 997.45 996.9 127 24.75 22.25 25 4.20 146-025-010 146-025-410 2.5 2002.76 2002.3 255 24.75 22.25 25 8.40 146-025-020 146-025-420 2.5 3000.22 2999.7 382 24.75 22.25 25 12.60 146-025-030 n/a NEW 3.0 499.51 498.9 53 29.75 26.75 30 3.10 146-030-005 146-030-405 3.0 999.02 998.4 106 29.75 26.75 30 6.20 146-030-010 146-030-410 3.0 1998.05 1997.4 212 29.75 26.75 30 12.40 146-030-020 146-030-420 3.0 3053.62 3053.0 324 29.75 26.75 30 19.32 146-030-030 n/a NEW 4.0 502.65 501.9 40 39.70 35.70 40 5.50 146-040-005 146-040-405 4.0 1005.30 1004.6 80 39.70 35.70 40 11.00 146-040-010 146-040-410 4.0 1998.05 1997.3 159 39.70 35.70 40 22.00 146-040-020 146-040-420 4.0 3015.92 3015.2 240 39.70 35.70 40 33.93 146-040-030 n/a NEW 5.0 502.65 501.8 32 49.70 44.70 50 8.60 146-050-005 146-050-405 5.0 1005.30 1004.5 64 49.70 44.70 50 17.20 146-050-010 146-050-410 5.0 2010.61 2009.8 128 49.70 44.70 50 34.40 146-050-020 146-050-420 5.0 3015.93 3015.1 192 49.70 44.70 50 51.60 146-050-030 n/a NEW 6.0 508.93 508.0 27 59.65 53.65 60 12.30 146-060-005 146-060-405 6.0 999.02 998.1 53 59.65 53.65 60 24.50 146-060-010 146-060-410 6.0 1998.05 1997.2 106 59.65 53.65 60 49.00 146-060-020 146-060-420 8.0 502.65 501.4 20 79.60 71.60 80 21.40 146-080-005 146-080-405 8.0 1005.30 1004.0 40 79.60 71.60 80 42.70 146-080-010 146-080-410 8.0 2010.61 2009.4 80 79.60 71.60 80 85.40 146-080-020 146-080-420 10.0 1005.30 1003.9 32 99.60 89.60 100 70.60 146-100-010 146-100-410 NEW Ends Machined for Continuous Mounting 2. 1 40 T: 01827 310311 • F: 01827 307118 E: sales@wmh-trans.co.uk • www.wmh-trans.co.uk FAX: 01827 253390 www.apex-trans.co.uk TEL: 01827 253340 sales@apex-trans.co.uk DIN Quality 1 2 3 4 5 6 7 8 9 10 11 12 Manufacturing Method Punched, Pressed, Injection Moulded Planed, Milled, Shaped Shaved Ground Circumferential Speed < 3 m/s 3 – 6 m/s 6 – 20 m/s > 20 m/s Typical Applications Agricultural Machines Lifting Devices, Conveyors, Office Machinery Construction Machinery Apparatus Construction Machine Tool Manufacturing Internal Combustion Engines Turbines, Measuring Equipment Testing Equipment Application Guide