CHURCHILL RH8 GEAR HOBBING

Maximum Diameter

250 mm

Min Module

4

Max Module

6

Max Height

940 mm

Max Hob Outside Dia

102 mm

Max Height Work Spindle To Arbour

191 mm

Max Height Work Spindle To Arbour

393 mm

Max outside dia-using 3in(76.2mm) dia. Hob

8in (203-2mm)

Maximum length of travel

8in (203-2mm)

Maximum DP (Mod) cast iron or steel

Maximum height, work spindle to Tailstock centre

37in (940mm)

Minimum height, work spindle to centre of Hob Arbor

7in (191mm)

Maximum height, work spindle to centre of Hob Arbor

15in (393mm)

Max. distance centre of work spindle to centre of Hob Arbor

5in (139.7mm)

Min. Distance centre of work spindle to centre of Hob Arbor

1 1/2 in (38mm)

Hob Arbor Dia (STD)

1 1/4 in (32mm)

Hob Arbor keyway

5/16 in x 5/32 in (7.93x3.97mm)

Hob Head Swivels

0^o to 90^o R & LH

Maximum Hob outside Dia.

4 in (102mm)

Hob Speeds

3:1 ratio Hob Head, 70 to 260 rev/min
2:1 ratio Hob Head, 200 to 500 rev/min

Vertical feeds per revolution of work

.006in to .250in (0.152 to 6.35mm)

Infeed rate of Hob Slide per minute

.010in to 1.80in (0.254 to 45.7mm)

Main drive motor

7 1/2 HP, 1500 rev/min

Rapid transverse motor

2 1/2 HP, 2800 rev/min

Hydraulic pump motor

1 1/2 Hp 1000 rev/min

Approximate floor area

22 1/2 sq.ft (2.069 sq m)

Machine heights

84in (2134mm)

100in (2540mm)

Shipping specification

Nett 3 tons 15 cwts, (3810 kg)
Gross 4 tons 8 cwts, (4470 kg)

Case dimensions

5ft 8in x 5ft 8in x 9ft 0in (1727mm x 1727mm x 2743mm)