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Anyone ever watch these "machinists"?
If your Leg, Dog, or Kid, was caught in them..... I think you would like the pain to quit quickly. Then rapidly freewheel, whatever was caught, free. Clutch or relief valve. does not care what hurts, time is money....... -
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sb 9 back gear missing detent/tensioner - won't stay in back gear.
My 37 workshop is the same.. I put a pad of copper wool, down the rear backgear guard screw hole... Tightening guard screw, pushes pad against backgear eccentric sleeve. A longer screw could be fitted, with a jam nut, for a bit classier setup..- abarnsley
- Post #2
- Forum: South Bend Lathes
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Step belt J-Head - quill skirt loose from quill - how to re-attach? (and related ?s)
Best to watch a video..... Reassembling the Bridgeport Quill Housing - YouTube Not much work involved. BP often puts setscrews on top of setscrews... No need to mess with spindle bearings, unless they need replacing. Quill can drop out the bottom as a unit... Should be no need for fancy...- abarnsley
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- Forum: Bridgeport / Hardinge and USA Light Iron
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Aftermarket Power Feed for Series 2
Type 150 Power Feed A Stock Item for Series II....... Part numbers listed....- abarnsley
- Post #4
- Forum: Bridgeport / Hardinge and USA Light Iron
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Need help replacing brake shoe
H&W should have videos on Youtub.... Bridgeport Variable Speed Head Top-Half Dissasembly - YouTube On my step pulley machines, I cheat.. and turn a bigger brake shoe pivot pin/screw. And make a thicker/wider brake cam.. Spaces old shoes out a bit more. Collets??? R8 collets never held...- abarnsley
- Post #2
- Forum: Bridgeport / Hardinge and USA Light Iron
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Bridgeport head I’d help
A Chinese or Taiwanese clone.. Quite a few different makers, labels.. Start comparing casting shapes, remnant of Makers label on belt housing shape, to other heads..- abarnsley
- Post #4
- Forum: Bridgeport / Hardinge and USA Light Iron
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British Ajax AJT4 mill lube blockage, rwemedy?
Sounds like standard Bijur fittings. Restrictor fittings are numbered. When clogged, just replace... Bijur Oiler fittings - check valve or? Here is just 1 site, that breaks parts down pretty simply: Bijur Lubrication Products - H & W Machine Repair -
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machining keyway in 8" bore
Scaled up National keyseater cutter.... Home - National Machine Tool Co. -
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Advice for VFD for Bridgeport M head
Have had pretty good luck with AC Tech and the Teco L510 drives.. On the L510, use the online manual, instead of one supplied in the box. A lot more info on setting up, and wiring different types of switches... I use a military ammo can with its bottom mounted vertically, for an enclosure...- abarnsley
- Post #10
- Forum: Transformers, Phase Converters and VFD
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Bale Spike Hydraulics Problems.
Bog standard truck or atv winch setup.. If motor was grounded like a car starter, you would have to reverse polarity of entire car, to rotate motor in reverse. So both brushes go to relays/contactors/switch, that reverses polarity and thus direction... Look up wiring and trouble shooting, for... -
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Removing the Quill Stop Microscrew when the Reverse Trip Lever is Broken and Jammed
All this because.. The snap ring on micrometer screw at bottom, was broken, missing, or not seated in groove... Little thing causing big problems.. Always check for the snap ring.. No ring?? Better order a new trip lever.... And a snap ring...- abarnsley
- Post #6
- Forum: Bridgeport / Hardinge and USA Light Iron
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size of thread on leadscrew dial indicator locking bolt
My 1937 9 in has just a 3/8 pin for the thread dial mounting shaft. 2ea 1/4-20 Allen head setscrews about 1/2 in long... engage divots in the pin, on top of indicator casting, and side/front of apron... Setscrews set below surface of castings when tight.. A longer 1/4-20 could be used on...- abarnsley
- Post #2
- Forum: South Bend Lathes
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Evaluating step belt B'port head statically? (laying on a workbench)
A BP spindle is not in the same class, as a 20k rpm CNC spindle.. A couple Pin spanners. Very clean parts. To make things even simpler, sealed P4 grade bearings are available. H&W slaps them together pretty quick in a Youtube vid.. I spend a bit more time, but a BP is a kids wagon wheel...- abarnsley
- Post #5
- Forum: Bridgeport / Hardinge and USA Light Iron
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Measure pitch diameter of odd number of teeth gear
Sounds like a job for... Gear tooth calipers...... -
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Spindle vibration on a BP clone with VFD speed control
There is such a thing as TOO stable Drill 1/8th in holes on a #2 Horizontal.. Or a #4 vertical... Where did that feel go????? Horizontal loves big cuts, big work.. BP never designed to be a chippie monster. Was designed to do things, not easily done on Stable machines... -
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Spindle vibration on a BP clone with VFD speed control
Spline play is part of it. But the dog clutches on spindle pulley hub, and splined gear hub, are the major noise source.. Hi low lever or cam ring movement, can allow dog clutch teeth to engage slightly more or less. The dog teeth are cut at a slight angle. A little tooth end clearance gets... -
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WTB: South Bend 9 switch pedestal
I can get you measurements. Exact thing you are looking for.. And pics. I have a 1937 9 in Workshop... Could be made pretty easy, with help from a a good muffler shop to bend pipe. Some flat bar, and some welding... Would look pretty close. Not as easy as just finding correct part...- abarnsley
- Post #10
- Forum: Tooling, Parts and Accessories For Sale or Wanted
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Evaluating step belt B'port head statically? (laying on a workbench)
The only way to fix or SEE what is worn.. Is to take it apart.. An unknown head should be pulled down, just because. Leave spindle and spindle bearings alone, if they are smooth and quiet... But your problem is in the belt and gear housing assembly. That is because it skipped out under load...- abarnsley
- Post #2
- Forum: Bridgeport / Hardinge and USA Light Iron
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BP J-head loose key in quill down feed speed selector
Looks like key is slightly bent.... Not too terrible to fix properly... Pull motor, 2 nuts.. Set on table so it can't roll off.. Pull belt housing, 3 nuts. Pull quill feed worm cradle, Allen screw or 2. Pull vertical shaft and bushing, Allen screw or 2. A bit tough to get the bronze...- abarnsley
- Post #4
- Forum: Bridgeport / Hardinge and USA Light Iron
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Spindle vibration on a BP clone with VFD speed control
I trust Reeves drives to wear, turn hp into waste heat, rattle, use costly belts, and require far more service, than a VFD. At 3 hp level, cost of VFD is not a big issue.. 2 or 3 Reeves belts... Modern train locomotives, have been using VFD's for quite a while now.. I don't trust unbalanced...