Brigeport One brigeport Vertical milling, drilling and boring machines

Bridgeport SERIES ONE
Vertical milling, drilling and boring machines
VERSATILITY
HIGH
PRODUCTIVITY
POWERFUL
METAL REMOVE
The Bridgeport Series One is a míllíng, drilling and boring machíne that, with the combínation of head, ram, turret and table movements, can machíne a workpiece longer and wider than its own table and from any angle. 
With the extensive range of attachments available, the machine caп virtually become a workshop in itself and can readily accommodate changes in type of work.
Maximum strength and rigídity under cut is ensured by the robust
constructíon of the major castings, extra wide slideways, twin knee/column locks and twin table/saddle locks, giving years of accurate and economical production.
The Bridgeport Series One universal turret milling machine is a classíc in its own right and with over 1 million produced to date, ít ís unquestionably the world s most popular milling machine.
Fífty years unrivalled expeńence in turret mill manufacture combined with continuous development ensures the very best value for money in quality, performance and reliability.
Machine shown with optional perspex splash guard.
Cover photo by courtesy of 
NEWBOULD ENGINEERING
IS0 9001 /Bs5750 Pt1

MACHINE FEATURES
Míllíng heads wíth wíde spíndle speed range
R8 Taper toolíng
SERIES ONE
Twin table/saddle locks
Extra wide slídeways
VERTICAL MILLING, DRILLING Twin knee/column locks

 AND BORING MACHINE Unique ram clamp
 Turret setting scale
Ram setting scale
AL Quíck release adjustable micro depth stop
Optional 2 axís digital read-out
Work holding accessoríes
Optíonal power feed/rapíd traverse
Optional shapíng and slotting head
The original Bridgeport turret mill was desígned in 1938 by Magnus Wahlstrom and Rudolph Bannow, two Swedish engineers líving in America.
They found that conventional machines could not utilize the full capabilíties of the míllíng,
drilling and boríng head which they had been buílding since 1928. Their new design provided a totally new concept in milling machines.
The versatílity of thís new machíne allowed the milling head to be moved into practically any position relative to the table and workpíece. Not only could it machine an area larger than the table, but by rotating the head through 180 , a second head mounted on the opposite end of the ram could be used. This permitted the milling and boring operations to be followed by haping and slotting etc., without dísturbíng the original set-up.
It was a brílliant concept and this versatílíty has remaíned one of the hallmarks of the Brídgeport Series One.
For certain photographs in thís /eaf/et, the machíne cutter guard  has been removed to present the applicatíon with greater claríty.
Cutter guards musł be fitted at all times when the machine is in operation.

SUPERIOR DESIGN
STANDARD DEMONSTRATION CUT
The standard demonstration cut of the Bridgeport Seríes One BR2J2 is:
Metal removal volume 28 cu. cros/min 1 /8 cu. ins/min
Material 30 ton/tensile mild steel
Cutter 4 tooth end mill 
spindle speed 1200 гpm
Feed rate 75mm/min 3 /min
Depth of cut 25mm 1
Width of cut 15mm 5/8
Type 2J2 Head
TOUGHER THAN YOU THINK MILLING HEADS
The very high quality of the component parts and assembly procedures enables extraordinarily heavy cuts to be made in relation to the power supplied. The type 2J2 milling head is powered by a 2 /akW 3hp motor with infinitely varíable spindle speeds from 50 to 3750 rpm, whilst the 3/a-1 /2kW 1-2hp motor of the Type J heads provídesl5 changes of speed ín the range 67 to 4600 rpm.
GIUILL
The quill is hard chrome plated, accurately ground and lapped to fit the honed bore іп the main casting. The sensítíve hand feed lever and slow feed handwheel aгe readily detachabie for operator convenience. There are three rates of power feed in both
directions.
Maximum productivity is assisted by a quick release depth stop for adjustíng quill depth. When setting the feed disengagement position for accurate boring and míllíng operations, the micro-adjuster can be moved rapidiy to the approxímate position followed by minimal adjustment for fine posítioníng.
The design of the positive quill clamp prevents over-tightening and risk of quill distortion, while a slipping clutch mechanism provides protection from overload.
SUPERIOR DESIGN  
AIR EXHAUST BELT HOUSING MOTOR AIR INLET

BELT HOUSING AND MOTOR SUPPORT REVERSE FLOW AIR COOLING
The belt housing and motor support may be swívelled through The uníque and patented air cooling system of the 2J2 head
360 , enabling the head to be used ín posítíonswherethe housíng ensures that the heat build-up in the spindle bearings, belt and or support might otherwise foul. quil is kept to an absolute minímum. This is achieved by the air being drawn ínto the housing past the spindle bearings by the rotation of the drive belt and fínally emitted out of the exhaust at
the top. Distortion is avoided by maintaining the operating temperature to wíthín 11 C 20 F of ambient, resulting in íncreased belt and bearíng lífe and maintained accuracy.
SPINDLE AND R8 TAPER
The R8 spíndle taper was specially designed for the Bridgeport Seríes One and facílitates the ínterchangeability of a wide range of spíndle toolíng. It ís now accepted as a standard by leading spindle and tool chuck manufacturers all over the world.
The majority of the work carríed out on the Series One is end míllíng usíng collets, which with the R8 taper can be located dírectly ínto the spindle nose. Thís reduces the distance between the spíndle bearing and the end of the cutter to a mínimum.
The quíck actíng spindle brake may be locked on to facilítate rapid tool changíng.
SUPERIOR DESIGN ;
RAM CLAMP
The ram runs in vee slídeways and is moved backwards and forwards through a rack and pinion mechanism to enable accurate positioning. The Bridgeport patented method of clampíng the ram ; is to expand the гam into the slideways on top of the turret. Thís method gives a wider area of contact for a very rigid joínt, so increasing stitfness and reducing vibration.
CENTRALISED LUBRICATION
Correct lubrication gives longer accurate life to the machine, reducing maintenance and making the machine more sensitive and easier for the operator to work. A centralised system lubricates slideways, leadscrews and the bevel gears of the knee elevating mechanism. Operation by a single lever saves the operator time and makes ít easy to give each moving part the correct amount of oil, pre-determined by a series of ineteríng
valves built into the system.
HARD CHROME SLIDEWAY OPTI0N
The manufacturing specification includes the option of hard chrome plated slídeways to give extra years of accurate life. The specíal Poeton-Tibon precísion process enables the hand scraped slideway to be hard chrome plated to a uniform thickness of approximately The surfaces plated are:
1. Top of cross slide - longitudinal movement.
2. Top of knee - cross movement.
3. Cross slide to table gib.
Poeton chrome plating becomes an integral part of the base casting and sínce heat is not involved in the process, it causes no stresses or strains. The slightly porous deposit provides an idea lubricant absorbing surface with an extremely low co-effícient of friction and also gives corrosion resístance to the slideways.
Hardness exceeds Rockwell , giving outstandíng wear qualities.
SUPERIOR CAPACITY
CAPACITY
The highly successful Bridgeportconcept of utilizing the combined movements of table cross-slide, ram and turret, allows a component considerably larger than íts own table to be machíned without the necessity of costly re-setting procedures. The Series One table
síze of 1065mmx 230mm 42 x 9 has proved to be more than adequate for a vast number of jobs that might otherwise have required a consíderably larger and more expensive machine.
BRIDGEPORT UN1T HEADS .
Ѕ Whilst the Type J , 2J2 and E heads are primaríly íntended for use on the Brídgeport machine, their independent motor drive 1828 makes them suitable for use on other conventional milling machines and special purpose tools.
Dimensions in mm.
TYPE `E SLOTTING AND SHAPING HEAD OPTION
The type E slotting and shaping head mounted on the rear of the 1/8 to 4 x /a , adjustment being made simply by slackening ram ís an extremely useful additíon. The swivelling turret a nut and turníng the indicator dial.
enables the E head to be quickly and easily swung into position
to slot or shape a previously machined component without Cuttíng tools can be located vertically or horízontally in the tooldisturbing the original set-up. The swível adaptor e nables the holder, which íncorporates a clappeг box for tool relíef on the head to work vertically or at any angle. Driven by its own /4kW return stroke. The clapper box can be locked when not hp motor, it has síx rates of oscillatíon from 60-350 strokes required. Capacity for horízontally mounted tools is 9mm з/8 per minute. The stroke is adjustable from 3-100mm in 3mm steps and for vertically mounted tools is 15mm 5/8 .

SUPERIOR CAPABILITY
DIGITAL READ-OUT OPT10N tNF1N1TELY VARIABLE POWER FEED OPTIONS
The 2 axis digital read-out system can provide higher production lnfinitely variable power feed uníts are avaílable for both the efficiency and a better, more uniform machiníng quality, leading longitudinal X and cross Y axes and can be fítted to machinesto a reduction of rejects and qualíty control costs, together with having table lengths up to 1220mm 48 . Both units incorporate less strain on the operator. rapid traverse controlled by means of a pushbutton, while the feed ís selected by turning the graduated dial mounted on the Features include memory storage of reference point, datum front of the unit. Feed rates of both units are variable from 20mm information and parameters. Using a second datum, incremental to 875mm 3/4 to 35 per minute and the rapid traverse feed rate and countdown moves can be made and a true inch/metric is 1143mm 45 per minute.
conversíon facility is provided. System resolution is and the standard traversing lengths are X axis 660mm
26 and Y axis 305mm 12 .
A complete DRO system is avaílable for retro-fit.
HIGH PRODUCTION
CAPABILITY
DISTORTION-FREE CLAMPS
The digital read-out system is provided with special reed type distortion-free clamps fitted to the machine table and cross-slide. These eliminate the dísplacement which often occurs withnormal mílling machine clampíng systems.
SUPERIOR OPERATION
SAFETY OPERATOR CONVENIENCE
The machine is designed to ensure that the investment in people, Grouping of controls
machine, tooling and components is protected. All the main controls are easily operated from the front of the machine, íncluding the slide clamps for all three axes.
Safety Features Feed selection
1. Spindle brake - rapidly stops the spindle and can be locked on Quick and simple selection of cross and longitudinal traverse
for tool changing. is controlled by graduated dial. Rapid traverse is operated by
pushbutton.
2. slipping clutch - protects the quill from possible damage owing to overload. síngle spanner operatíon
The standard Bridgeport spanner fits all the movement controls
З. Cutter guard - supplied as standard. The illustration above and locking bolts on the milling head, ram, turret and ram shows the optional perspex splash guard. adaptor.
4. Traverse handles - automatically disengage when traversing. Centralísed lubrícatíon system síngle lever movement lubricates all slides, leadscrews and
5. Kпee elevation handle - positíon may be reversed when not in elevatíng bevel gears.
use.
6. Electrical interlocks - the feed cannot be started if the spindle is stationary.
7. stop button - a red headed mushroom emergency stop button is incorporated into the control panel.
MACHINE DIMENSIONS .
30 Longitudinal traverse Manual only 760mm
Longitudinal traverse Power feed fitted 
12 Cross traverse 305 m m
16 Vertical traverse 405mm
3 Number of tee slots 3
5/8 Width of tee slots
Centres of tee slots
Power Feed Optíons
Feed rate - long and cross 20 - 875 mm/mín infinitely variable
45 in./min Rapid traverse - long and cross 1143 mm/min
SPINDLE
R8 Tapeг R8
50 - 3750 гpm Spindle speed Type 2J2 head 50 - 3750 гpm
3hp 30 min Motor Type 2J2 head 30 min
2hp continuous continuous
6 3/a-19 Spindle centre to column face 162 - 467mm
0-9 Spindle to table 73 - 480mm
12 Ram movement 305mm
.0015,.003,.006 Oui11 feeds - peг rev. of spindle 
SHIPPING PARTICULARS
82 Machine height BR2J2 2085m m
82 x 64 F1oor space occupied 2085mm x 1625mm
115 cu. ft Volume occupied
19881 Nett weight basic machine BR2J2 900kg
26041 Gross weight basic machine BR2J2 1180kg
Alternatíve tabie sízes availabie:
915mm x 230mm 36 x 9 , longitudinal traverse 610mm 24
1220mm x 230mm 48 x 9 , longitudinal traverse 915mm 36
Longitudinal power feed when fitted reduces table traverse by 90mm 31/2
irrespective of table size.
SlIPERI0R

ACCESSORIES
The comprehensive range of accessories considerably extends of the Bridgeport Series One s basic versatility. Most accessories  may be retro-fítted, thus allowing the machines capabilítíes toaccommodate changíng productíon requirements. 
 WOULD YOU DO THESE JOBS?
QUILLMASTER QUILLMASTER R1GHT ANGLE ATTACHMENT
The advantages of the Quíllmaster are quickly recognised Ьy tool The Quillmaster gearing provides an increase of 50 over the and díemakers, as any corner with a small radius can be finish machíne spindle speed to permit the efficíent use of small end
mi11ed to a degree of sharpness not previously possíble. The mills. Collet capacities are 2, 3, 4, and 5mm /a , 5/з2 and spindIe housing of the attachment may be adjusted to any з/ıs díameter. 
position between vertical and horizontal and through 360 on the
quill. By tíltíng the spindle housing, the inside walls of an The Quillmaster Right Angle Attachment QRA increasesimpression may be milled. even further the usefulness of the attachment. The QRA unít has permanently sealed bearings and has a 5mm 
Precision built to rigid standards, the Quillmaster is fitted with diameter capacity.
permanently lubricated precision bearings and a hardened ground spindle.
SUPERIOR  ACCESSORIES
RIGHT ANGLE ATTACHMENTS FOR M1LLING HEADS EGIUIPMENT CABINET
Ideal for machining pockets and cavítíes, these attachments Specifically designed to accommodate the small accessories facilítate milling, drilling, boring and reaming at right angles to the and spindle tooling of the Bridgeport Series One, the cabinet has spíndle of the milling head. two large smooth actíon drawers, three shelves which are pivoted
for easy access, and lockable doors. Provision is made for Two sízes are available: the No. 3 attachment 4:3 speed mountíng the clamp set on an exterior side panel.
reduction for relatively heavy duty work and the No. 4attachment 2:1 speed reduction for use in positions that would
be inaccessible to the larger No. 3 unít.
The cutter and drive spindles of both attachments are mounted in their own anti-friction bearings and are dríven dirèct from the R8 taper of the milling head by a drive shaft. Mounting consists of placíng the attachment on the quill, securing the drive shaft by
means of the spindle draw bar a 3/a is required fór the No. 4 unit and then tíghtening the clamping screw to hold the attachment firmly to the quill
OTHER ACCESSORIES AVAILABLE
Right Ang1e Arbor Support Bracket
Splash Tray
Cross Travel Stop
lnch/Metric Dual Reading Dials
F1ood Coolant System
Low Voltage Machine Líghtíng
Clamp Set
Slotting and Shaping Head page 7
Hard Chrome Slideways page 6
Power Feeds page 8
Digital Read-out page 8
SPINDLE TOOLING
Spíndle Collets and Adaptors
R8 Taper - available from 2mm to 20mm diameter in 1 mm steps
No. 2 Morse Taper - available from 3mm to 13mm diameter in
Adaptors can be supplied to convert the R8 Taper to No. 1 or No.
2 Morse Taper.
Stub Arbors
R8 Tapeг - left and ríght hand thread, supplied complete wíth
spacers and nuts in the following diameters: 8, 10, 13, 16, 22, 27,
Collet Chucks
Titanic - R8 Tapeг - complete wíth set of 6, 10, 12, 16mm 1/4 ,
3/a , 1/2 , 5/a collets, or with 25mm and 32mm 1 and 11/4 collets.
Clarkson Autolock Chucks - R8 Taper - complete with set of 6, 10, 12, 16mm /a , 3/8 ,1/2 , 5/8 collets or with 25mm 1 collet.
Drill Chucks
Jacobs - R8 Tapeг - 13mm 1/2 oг 20mm 3/4 capacity.
Albrecht Keyless - R8 Taper - 10, 13 or 16mm 3/a , 1/2 or 5/a capacity.
SPINDLE TOOLING
End Mill Holders
End mills can be rigidly locked ín these holders and the leading edge is chamfered to allow maximum vision when machining pockets. The short overal length ensures that the tool is held as close as possíble to the spindle bearing, thus ensuring maximum rigídity under cut. Sízes aгe 6, 10, 12, 16, 25mm 1/4 , 3/ 1/2 , 5/8 , 3/a , 1 diameters.
Hígh speed Flycutter
The High Speed Flycutter is counter-balanced to províde faster machining wíth ímproved surface finish. It ís supplied complete with one unground solíd carbide cutting tool of general grade M 10 .
Addítíonal tools can be supplied in packs of 5.
Boring Heads
R8 Taper - No. 1 Boring Head comprising 4 boring tools, 1 boríng baг, 2 Allen keys.
R8 Taper - No. 2 Boring Head comprísíng 4 boring tools, 4 boríng bars, 3 Allen keys.
shapíng Tools
For use wíth the type E shaping and slotting attachment. The set comprises 5 high speed steel tools of varyíng shapes and sizes as índícated, plus 2 bars and a specíal holder for side mounting in the clapper box. The extensíon bars and side mounting holder are desígned to take 5mm 3/,б tool bits.