No. 37 & 47 Universal Thread Grinding Machines

Three models are available, each having design characteristics sutaible for specific applications.

Type 1. Plain thread grinding machine : Equally sutaible for production work, toolroom work or external gauges manufacture to most international screw thread standard.

Type 2. Semi -Automatic pluge cut machines:primarily used for accurate high-speed productionof short lenghths of external threads using the plunge grinding technique.

Type 3. Taper thread grinding machines: Developed from the type 1 machines for girnding precision taper screw gauges up to 1 in 4 on daimeter to API and other international standards either external or internal.

Specification: 

                                                                No.37 Machine                                          No. 47 Machine

Maximum diameter admitted                                                       355mm 14in

Maximum length between centres                     500mm 20in                                         1066mm 42in

Maximum length ground at one setting              457mm 18in                                         1016mm 40in

Maximum helix angle                                                                 45° right or left hand

Pitch range                                                                               0,4 to 300mm 60tpi to 12in lead

Workhead and tailstock centres                                                   no. 4 morse

Workhead speeds (forward)                                                       0.21 to 31 rpm

Workhead speeds (reverse)                                                        6,35:25 or 100 rpm

Wheelhead motor for grinding and dressing                                  4,5/2.25kw 6/3 hp

Wheelhead motor for crushing                                                    0.25 kw 1/3 hp

Special large swign machne available 406mm (16in)