Harrison Alpha 550S – Year 2001
CNC Lathe

Year of manufacture 2001

Programming language Harrison Alpha or G-Code

Screen language German

4-fold quick tool changer make PARAT

center distance 2000mm

Swing over slide 370mm

Swing over bed 554mm

spindle through bore 104mm

speed ranges 18-200 / 55-605 / 140-1800 (3-step gear)

spindle nose Camlock D1-11

Tailstock cone MK5

Removable Lynette Clamping range approx. 70-240mm

Operating hours approx. 15.000H (hour counter defective at 11.500H)

Accessories:

1stk. 3-jaw chuck D=315mm

1stk. 4-jaw chuck D=315mm

Total 23 pcs. Tool holder (partly with tool)

2pcs. holder MK4 resp. MK3 for drill chuck/drill/sinker

6pcs. holder with prism for boring bars

15pcs. holder for shank tools up to #30mm

Various accessories such as chuck wrenches, wear and spare parts, stops, mounting tool for

tool set-up, coolant connections, lines, various base and top jaws for

3 and 4-jaw chucks.

Repairs carried out (2017 and 2018 respectively):

New main board for the control system.

New ball screws and feed nuts for X- and Z-axis respectively.

New bearing for the main spindle

In the course of replacing the feed screws, a complete service of both slides was performed by

by an external service technician. Both slides were disassembled and cleaned, the

lubrication lines of the central lubrication system in the slides were renewed,
the guide play was adjusted,

the load bearing of the motors were checked, the wedges of the dovetail guides were replaced and

all wipers and seals were renewed. The PARAT tool holder was also disassembled,

the dowel pins were renewed and the spring assembly replaced.