STK Machine Repairs, Inc.
Specializing in Bridgeport Parts & Service Repairs

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Find your replacement parts with our On-line Parts Manual, then simply fax to 847-888-0897.
Bridgeport Series I parts diagrams are below:
For Sale:
Used/Rebuilt Bridgeport mills
For Sale:
Used/Rebuilt surface grinders
Variable Speed Top Housing Assembly

Item No. Part No. Description Item No. Part No. Description
11459Speed Changer Chip Shield 44-A1115Timing Belt 1.5 HP
21460Machine screws 44-B1536Timing Belt 2 HP
31603Bearing block 451564Spindle pulley spacer
4-A1455-AVari-Speed dial 1.5 HP 461573Key
4-B1455-BVari-speed dial 2 HP 47-A1117Spindle pulley hub 1.5 HP
51463Roll pin 47-B1537Spindle pulley hub 2 HP
61464Speed change stud 481543Snap ring
71465Speed changer chain 491508Wave spring washer
81462Roll pin 501542Ball bearing
91488Speed change chain drum 511489Timing pulley clutch sleeve
101487Speed changer spur gear 521560Snap ring
111457Socket set screw 531556Pivot sleeve (2 req.)
121461Bronze bearing 541554Socket head cap screw (2 req.)
131348Bronze bearing 551551Speed change plate
141132-03Hex nut 561557Spindle pulley bearing sliding housing
151478Plastic face plate 2 HP 571559Adjustable drive vari-disc assy.
161477Flat head cap screw (2 req.) 581558Ball bearing
171458Speed changer housing 591126Plastic insert (2 req.)
181480Socket head cap screw (4 req.) 601095Plastic key
191486Bronze bearing 61-A1113Plastic insert 1.5 HP (2 req.)
201356Roll pin 61-B1114Plastic insert 2 HP (2 req.)
211343Worm gear 62-A1035-BPlastic key 1.5 HP variable disc
221472Bronze bearing 62-B1035-APlastic key 2 HP variable disc
231307Socket set screw 63-A1037Adjustable 1.5 HP motor variable assy.
24-A1473-ASpeed change shaft 63-B1036Adjustable 2 HP motor variable assy.
251479Socket set screw 64-A1571Retainer ring 1.5 HP
261471Wave spring washer 64-B1599Retainer ring 2 HP
271476Speed change handwheel 64-C016-0070Retainer ring 2 HP CNC
281475Caution plate 651307Socket set screw
291474Speed change handle 66-A1567Roll pin 1.5 HP drive key
301026Two-life drawbar 66-B1407Roll pin 2 HP drive key
311544Socket head cap screw (2 req.) 67-A15681.5 HP drive key w/roll pin
321195Socket cap screw (3 req.) 67-B15972 HP drive key w/roll pin
331468Top bearing cap 68-A15691.5 HP stationary motor variable disc
341466Drum switch 68-B15982 HP Stationary motor variable disc
351552Cotter pin 69-A1564-011.5 HP Motor shaft
361555Washer 69-B1546-031.5 HP motor shaft (old style)
371545Hex jam nut 69-C1547-012 HP motor shaft
381553Speed change plate pivot stud 69-D1547-032 HP CNC motor shaft
391469Socket head cap screw (2 req.) 70037-0113Master link
401548Hex head screw (2 req.) 711311Key
41-A1546Motor 1.5 HP (Rebuilt) 721582Lubrication data plate
41-B1547Motor 2 HP (Rebuilt)
421467Belt housing
431105Vari-speed drive belt



For more information, please call
(847) 888-0797
STK Machine Repairs, Inc.
500 N. La Fox St.  
South Elgin, IL 60177
www.stkrebuilders.com