QUALITY GRADES ONLY SHOWN FOR RACKS KEPT IN STOCK – FOR ERRORS OF OTHER QUALITIES, PLEASE REFER TO DIN 3962 STANDARD OR CONTACT OUR SALES TEAM FOR MORE INFORMATION WMH HAVE THE CAPACITY TO MANUFACTURE RACK & PINIONS IN QUALITY 12 UP TO QUALITY 4 SOME STANDARD RACKS ARE ALSO AVAILABLE IN HIGHER OR LOWER QUALITIES ON REQUEST Worms and Worm Wheels worm 7 .0 Quality 10 MOD fp/300 Fp/300 fp/500 Fp/500 fp/1000 Fp/1000 1 32 110 36 125 36 140 2 32 110 36 125 36 140 3 32 125 36 140 36 160 4 40 125 40 140 45 180 5 40 125 40 140 45 180 6 40 125 40 140 45 180 8 45 140 45 160 50 180 10 45 140 45 160 50 180 Quality 8 MOD fp/300 Fp/300 fp/500 Fp/500 fp/1000 Fp/1000 1 14 50 16 56 16 63 2 14 50 16 56 16 63 3 14 50 16 63 16 71 4 16 56 18 71 20 80 5 16 56 18 71 20 80 6 16 56 18 71 20 80 8 20 63 20 71 22 80 10 20 63 20 71 22 80 Quality 7 MOD fp/300 Fp/300 fp/500 Fp/500 fp/1000 Fp/1000 1 10 32 11 40 12 45 2 10 32 11 40 12 45 3 10 36 11 45 12 50 4 12 40 12 45 14 56 5 12 40 12 45 14 56 6 12 40 12 45 14 56 8 14 45 14 56 16 63 10 14 45 14 56 16 63 Quality 6 MOD fp/300 Fp/300 fp/500 Fp/500 fp/1000 Fp/1000 1 7 25 8 28 8 32 2 7 25 8 28 8 32 3 7 28 8 32 8 36 4 9 28 9 36 10 40 5 9 28 9 36 10 40 6 9 28 9 36 10 40 8 10 32 11 36 11 40 10 10 32 11 36 11 40 fp = Maximum pitch error for one single tooth (µm) Fp = Maximum Cumulative pitch error over length (µm) DIN 3962 Standard Tooth Pitch Deviation Quality 9 MOD fp/300 Fp/300 fp/500 Fp/500 fp/1000 Fp/1000 1 20 63 22 80 22 90 2 20 63 22 80 22 90 3 20 71 22 90 22 100 4 25 80 25 90 28 110 5 25 80 25 90 28 110 6 25 80 25 90 28 110 8 28 90 28 100 32 110 10 28 90 28 100 32 110 Quality 12 MOD fp/300 Fp/300 fp/500 Fp/500 fp/1000 Fp/1000 1 80 280 90 320 90 360 2 80 280 90 320 90 360 3 80 320 90 360 100 400 4 100 320 100 360 110 450 5 100 320 100 360 110 450 6 100 320 100 360 110 450 8 110 360 125 400 125 450 10 110 360 125 400 125 405 FAX: 01827 253390 www.apex-trans.co.uk TEL: 01827 253340 sales@apex-trans.co.uk 24