sc E I lEVER OPERATED METRIC CONVERS~ON The machine can be fitted with a lever operated English/Metric conversion unit which makes available a metric range of 0'5 to 7 mm. pitches in addition to the standard English range of 4 to 60 TPI. The full range of metric pitches is listed below. If a customer requires to convert a machine with a standard English gearbox by fitting a conversion umt, he can fit the unit at a later date. This would enable him to obtain a range of metric threads from 0'5 to 6 mm. pitch. The full range is listed below. 0·5 075 '±H 15 I 2 251' 4~ 6 I I 0·5 I 0·75 1 I 1·25 I 1·5 I 1·75 2 , I I 2·25 2·5 3 I 3·5 4 4·5 5 I I 6 7 I sc E I METRIC GEARBOX .& 6mm.
PITCH lEADSCREW) Metric: Threads. (With metric gearbox and 6 mm. Leadscrew) The range of metric threads is 0'5 to 7 mm. pitch (coarse) and 0'2 to 0'9 mm. pitch (fine). Change wheels required are I-30T, I-41ST, I-SoT, and I-DOT. A range of 4 to 60 TPI can be cut with the addition of 1-6oT and r-I27T change wheels. I I !NTER- RANGE PITCH TOP MEDIATE BOTTOM I LEVER I OR T.P.I. SHAFT SHAFT SHAFT POSITION Metric I 0·5 to 30 no 48 As gearbox (Coarse) 7 mm. chart Metric 0·2 to 30 80 120 i As gearbox (Fine) 0·9 mm. chart T.P.1. 4 to 60 30 120-127 I 60 As gearbox chart fULL RANG!: Of THREADS PER INCH 4 ~"1~5!1' 6!- I 7 I 7!, fUll RANG!:
Of Hi:; lIftiC PITCHES 0·2 0-25 0·3 ~I ()-4 I 0·45 0·5 0·5625 \ 0·6 16 1. I 19 120l 22 24 26~~ 32 36 I 38 ~ 44 48 52 56 60 8 9 9t1 10 -1-1 -1---:j2 --1--'1- 13 I 14 I 15,' 0·625 (J.7 0-75 I 0·8 I 0·875 I 0·9 1 1·1251 1·25 I I 1·5 1·75 2 12-25 2·5 3 3·5 4 4·5 5 6 71 I 13