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Series I
Bridgeport Series I User Manual
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INSTALLATION,
OPERATION,
MAINTENANCE,
AND
PARTS
LIST
SERIES
I
MILLING
MACHINES
Revised:
May
21,
2010
Manual
No.
M-450A
Litho
in
U.S.A.
Part
No.
M
A-0009500-0450
March,
2009
TP5260
2
Table of Contents
Default Chapter
13
Table of Contents
13
Chapter 1 - Installation
17
Uncrating
17
Shortages
17
Cleaning
17
Positioning the Head Upright
18
Lifting the Machine
20
Foundation
21
Placing on a Solid Foundation
21
Leveling the Machine
22
Machine Power Supply
23
Connecting the Power Supply
23
Lubrication
24
Alignment of the Head for Fine Work
25
Chapter 2 - Operation
27
Head Controls
27
High-Low Range Switch
28
Variable Speed Dial
28
Spindle Brake
29
Quill Feed Selector
29
Quill Stop Knob
30
Micrometer Nut
30
Feed Reverse Knob
30
Manual Feed Handwheel
30
Feed Control Lever
31
Feed Control Overload Clutch
31
Quill
31
Spindle
31
Quill Lock
31
Quill Feed Handle
32
Power Feed Transmission Engagement Crank
32
Hi-Neutral-Lo Lever
33
Speed Change Handwheel
34
Motor
35
Drawbar
35
Operational Procedures
36
Spindle Speed
36
Back Gear (Low Speed)
36
Direct Drive (High Speed)
37
Quill Feed
37
Head
39
Operational Procedures
39
Spindle Brake
39
Quill Sensitive Hand Feed
39
Machine
40
Operational Procedures
40
Swivel the Belt Housing
40
Swivel the Turret
40
Move the Ram Slide
41
Saddle Clamping
41
Knee Clamping
42
Power Feed Controls
43
Operational Procedures
43
Variable Table Feeds
43
Quick-Release Safety Handle
43
Variable Cross Slide Feed
43
E-Head Controls
44
Operational Procedures
44
Head Swivel
44
To Change the Speed
45
To Change the Stroke
45
Clapper Box
46
Chapter 3 - Maintenance
49
2J-Head
49
Motor Removal
49
Drive Belt Replacement
50
Timing Belt Replacement
50
Brake Shoe Replacement
51
Head
52
Micro Feed Trip Assembly and Quill Removal
52
Balance Spring Replacement
53
Feed Trip Adjustment
53
Collet Aligning Screw Replacement
54
Gib Strip Adjustment
55
Adjustment of the Table Gib
55
Adjustment of the Saddle Gib
55
Adjustment of the Knee Gib
56
Backlash Adjustment
57
Cross Screw Assembly
58
Backlash Adjustment
58
E-Head
59
Changing the Gear Case Oil
59
Removing the Motor
60
Changing Speed
60
Removing the Reduction Drive Unit or Ram
61
Chapter 4 - Parts Listings
63
2J-Head Top Housing
63
Back Gear
66
J-Head Top Housing
69
2J- and J-Head Lower Housing
72
Basic Machine
77
Lead Screw Assembly
81
Flood Coolant
83
Lubrication System
84
Power Feed Y-Axis (Old Style)
86
Power Feed Y-Axis Control Box (Old Style)
90
Power Feed Y-Axis (New Style)
91
Power Feed Y-Axis Control Box (New Style)
94
6F Power Feed X-Axis
97
Replacement Motor Assemblies Available
108
Motor Assembly J-Head 1 HP Unified Without NFPA
108
Motor Assembly J-Head Unified with NFPA
108
Motor Assembly 2J-Head 2 HP Unified Without NFPA
108
Motor Assembly 2J-Head 2 HP Unified with NFPA
108
Motor Assembly 2J-Head 2 HP 575 Volts Without NFPA
109
Motor Assembly 2J-Head 2 HP 575 Volts with NFPA
109
Replacement Motors Available
109
J Milling Head - Spare Parts Kit
110
Milling Head (1-1/2 HP) - Spare Parts Kit
110
Series I Standard Machine - Spare Parts Kit
111
Lead Screws for Manually Operated Machines (Without Keys)
111
Lead Screws for Machines with Power Feeds (Without Keys)
111
J- and 2J-Head, Metric Conversion Kit
112
Metric Conversion Kits (Hand Feed 36" Table)
112
6F Power Feed Field Conversion Kits for Machines Without NFPA
113
Chapter 5 - Specifications
115
Machine
115
Principle Dimensions
115
Floor Plan Installation Layout
116
Machine Specifications
118
Head
119
Milling Specifications
119
2J-Head
120
General Speed Recommendations
120
Table of Cutting Speeds and Feeds
120
J-Head
122
E-Head
123
6F Power Feed
124
Schematic
124
6F Power Feed Circuit Board
125
8F Power Feed
126
Schematic
126
8F Power Feed Circuit Board
127
8F Power Feed Schematic
128
Parts
129
8F Power Feed Schematic
129
8F Power Feed Circuit Board
130
8F Power Feed Circuit Board
131
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Bridgeport Series I Specifications
General
Type
Vertical Milling Machine
Motor Power
1.5 HP
Table Size
9" x 42"
Spindle Speed
60 - 4200 RPM
Spindle Taper
R8
Y-Axis Travel
12 inches
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