Clausing-Colchester Manual Lathe

Name	Clausing-Colchester Lathe
Date Acquired
Training	Training Required Step 1: Online Step 2: In Person
Manufacturer	Clausing
Description	Manual Lathe
Volunteers

Related Pages

ColchesterThreadCutting

Colchester 101 Presentation (dated - added for historical reference): Colchester101.pdf

This is just a cut a paste from the Wiki. It will need to be updated.

Reference

• \files\committees\machineshop
  • Manuals
  • Lubrication Chart
  • Parts List
  • Accessory Parts
• Parts and Manuals for purchase [WARNING: Some pages on this site are reported to serve malware]
• Carbide Insert Chart from Carbide Depot

Specifications\

Copied from user manual found in Committee Files.

Centers			Leadscrew
Height	6.5 in		Diameter	1.125 in
Dist between	40 in		Thread	4 T.P.I.
Swing			Threads
Over bed	13.25 in		Metric pitches	0.2 - 14 mm (39)
Over cross-slide	8.25 in		Imperial T.P.I.	2 - 72 TPI (45)
In gap	19 in		Module pitches	0.3 - 3.5 MOD (18)
Length in front of spindle nose	4.5 in		Diametral pitches	8-44 D.P. (21)
Spindle			Feeds
Bored to pass	1.625 in		Metric (R10 Series)	0.03mm - 1.0 mm
Nose type	4 in. D.1 camlock		Imperial (R10 Series)	0.001 in x 0.040 in
Morse taper in bush	3 MT		Cross feeds = half longitudinal (approx) values
Spindle Speeds			Height of Machine
No. off	16		Floor to spindle center	41.75 in
Selected in four ranges of four speeds in each range
..30.......40.......54.......72			Overall Length
..98......130......175......235			40 in. machine	78 in
.320......425......570......770			Weight
1030.....1380.....1860.....2500			40 in. machine	890 kg (approx)
Bed			Cross-slide
Width of ways	9.125 in		Width and length	5.875 in x 19.125 in
Type of ways	Vee and flat		Travel	8.25 in
Top slide			Tailstock
Width	3.5 in		Quill Diameter (nominal)	2 in
Travel	3.75 in		...travel	5.75 in
Tool section	1 x 1 in		...Morse taper	3 MT
Quick change tooling	Dickson No. 2		Set over	(0.250 in)
Motor (main)			Coolant pump unit
1800 r.p.m. (60 Hz)	3.7Kw (5HP) Cont.		Type AQ3 50/60 Hz	1/20 h.p.
	L184T Frame size

Tasks

Cleaning

• (Done) Use Scotch-Brite pads to remove surface rust
• (Done) Clean and re-oil ways
• (Done) Clear oiling ports throughout machine
• (Done) Coolant tank cleaned

Lubrication

• Replace all oils per manual

Connect Electrical

Motor in unit is 230v 3 phase which may be a problem at the space. Check with Infrastructure.

• Add pig-tail and plug

Coolant pump

• Verify it works
  • If not, what’s needed to get it working?
• (Done) Attach spigot to cross-slide
• (Done) Find out how to install collection tray

Collet Closer

• (What is this?) Figure out how it attaches and works

Tool Holders

Figure out where they will go and attach them

BXA ToolPost

• Install

Make new Speed Selector Handle

• (Done) Repaired old unit with epoxy, mounted, seems to work fine

Misc Maint

• (Done - yes) New Belt(s)?

Verify operation

• Check that all features work as they should

6” Chuck Backing Plate

• Turn and Mill to fit small 4-jaw

Acquisitions

• Backing plate for 6” 4-jaw (Done)
• Face Plate (Done)
• Large 4-Jaw (Done)
• 5C Collet chuck (Done - Collet closer)
• Plate to attache BXA Quick-Change Tool Post
• Aluminum for speed selector handle
• Pigtail and plug