Linear & Rotary Motion [Archive]

Why are "Tuning Constants" of identical Servos in identical machines different? (0 replies)
System 48 Cog Broken (6 replies)
Chinese Sliding Axis (0 replies)
What would you choose (2 replies)
Recommendation for motors and controller with rotating nut (11 replies)
Some questions to JAZZCNC or any other closed loop stepper experts (25 replies)
Hiwin Lubrication (2 replies)
Build in Progress (0 replies)
Build in Progress (0 replies)
New TBI Ball screw - How not bent is enough? & How to test? (2 replies)
Micro steps (13 replies)
will it work or not (7 replies)
4th axis as a "poor man's lathe" (34 replies)
Question about couplings... (5 replies)
Rotating ball nut, Ballscrew Pitch, RPM limits, and my particular build pickle (21 replies)
Driver help (21 replies)
Trying to identify component (2 replies)
90:1 vs 180:1 gear ratio (7 replies)
Looking for an economical XY (well and Z) solution that is not for the normal use (27 replies)
Gear reducing kit recommendation (16 replies)
Ballscrew source. (2 replies)
Low cost closed loop steppers from Alibaba (1 replies)
Soft limit setting trouble shooting (0 replies)
Nema 34 stepper shaft (6 replies)
4th axis brake enquiry (17 replies)
Purchase from linearmotionbearings2008 is turning out to be a total disaster (5 replies)
Looking for models (1 replies)
Replace bearings in BK12 & BF12 fittings (8 replies)
Wiring an 8 wire Nema to 4 core CY cable to an AM882 (19 replies)
theoretical speed (1 replies)
SBR20LUU seal interference (6 replies)
Repacking nut... numbering on diverters? (5 replies)
Simple Rack and Pinion Zero Backlash (no springs) (8 replies)
Another Marvel of Chinese manufacturing (12 replies)
Chinese Ballscrew nut play (9 replies)
Cutting ballscrews to length the easy way? (10 replies)
MOD1 Spur Gear query (2 replies)
Gerber Dim 200 X and Y axis u/s! (0 replies)
Hiwin rails / blocks (12 replies)
Mod 1.0 rack DIN standard??? (8 replies)
1500mm SBR16 + for £300?? (1 replies)
tb6560 controller problem (3 replies)
What are these mgn15c good for? (4 replies)
Z axis Ball screw basic advice, please. (4 replies)
Greasing Hiwin 15mm (13 replies)
Chinese MGN rails. Should I use them? (5 replies)
Belt drive vs direct coupling pro's and cons, Poll (10 replies)
will this 4th axis work (43 replies)
Why is Y axis "squaring" necessary only with twin motors? (10 replies)
Chinese Harmonic 4th axis (16 replies)
Workshop made Acetal / DELRIN Rack & Pinion (26 replies)
Do you grease HiWin rail Sliders? (2 replies)
Misumy linear rails (5 replies)
hiwin rail hole placement question (2 replies)
Gas Strut placement (2 replies)
Putting Bearing on Drill (10 replies)
Backlash , Any suggestions ? (18 replies)
Chain drive (7 replies)
BALLS!...The race type (7 replies)
TPI in metric? And a few other leadscrew confusions for newbie (8 replies)
axis movement jamming (3 replies)
Sturdy Rotary Axis for CNC table (7 replies)
Sioboni Gearboxes from zapp, any one have one? (0 replies)
Nitrile O-ring belt drive - suggested stretch percentage..? (23 replies)
festo H (7 replies)
Z mounted 4th axis (8 replies)
Suggestions please on a small desktop CNC, lead screws or belt drive? (10 replies)
angular contact bearings - back to back, further apart (16 replies)
Bearing fit problem (7 replies)
Shafts, bearings and circlips.... (7 replies)
Diy 4th axis rotary table using 100mm chuck with minimal backlash (3 replies)
x&z not working (5 replies)
Juddering Y axis (5 replies)
Fourth Axis... Thoughts? (3 replies)
motor gearing (cog) help please (5 replies)
non-locating / floating bearing - shaft location (5 replies)
Nema17 motors driving 1204 ballscrews ...that ok? (17 replies)
AC Motor upgrade - pulley sizes (7 replies)
Stay with Gearbox or retro fit DC motor etc; (1 replies)
Linear rail and ballscrew dimensioning for R/C router (0 replies)
Taperlock and translock bushes (2 replies)
Various nema 23's (9 replies)
taper roller bearings vs deep groove ball bearings (8 replies)
Supported rails and ballscrew / Different hights (4 replies)
shaft - grinding part joint (9 replies)
bearing mount, alignment and anything related (2 replies)
Advice needed for Z Design (8 replies)
"Racks" VS "ball screw" (1 replies)
router jumping position (9 replies)
Mounting motor under table? (51 replies)
Linear Motion , CHEAP!! (10 replies)
Axis resolution advice (8 replies)
Motor size 23' and 2/1 reduction for Z axe on SX3 retrofit. (0 replies)
Help with my build please (3 replies)
Missing Steps + Stalling X-axis (5 replies)
cnc machine stiffness calculator (13 replies)
Straightness of steel/alumunium box section (50 replies)
Z-axis design - help sizing materials please! (52 replies)
Bearings(Rotary) (7 replies)
Just a small question (4 replies)
Loading Calculator for Z axis (7 replies)
wonderfull linear solution ???????? (0 replies)
Stepper shaft size and pulley bore size problem (13 replies)
Arrrgh! Missed Vee bearings on ebay....! (10 replies)
Physics Guru needed (10 replies)
chain drive (9 replies)
Which X Axis drive arrangement? (0 replies)
Anyone have a UK source for open ended 10mm T5 Polyurethane belt (18 replies)
I don't know what to expect (11 replies)
new build - Rails & ballscrews & motors (9 replies)
Axis Directions (9 replies)
Looooobrication (7 replies)
dual drive x-axis? (36 replies)
New build - Screw specification??? (25 replies)
HELP Gary, I'm having a disaster (3 replies)
Lubrication (OOooeerr missus) (3 replies)
RockCliff Linear Hardware (5 replies)