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LMDC 3101 Whipple Road, Union City, CA 94587, 510-429-1060, -1065
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LMDC
Air Bearings & Systems Page

Here find slides, spindles and motion systems., and a few air filtering and drying components.
As you know, bearings suspended on air are, absent abuse or dirty air, practically immortal, and will serve your project for a long, long time.

One
Caveat -
Overloads will cause bearing surfaces to "break through" the air film at speed, instantly cold weld together, and equally instantly, destroy the bearing. This is called a hard "crash" . Consider ALL load ratings to be "instantaneous" and plan your setup to never, ever, ever, exceed the ratings. Old hands will know what I mean, and new hands are recommended to bring up systems slowly and carefully.

Please Note: All air bearings LMDC ships are GUARANTEED working when we ship them, and if feasible, re-tested immediately before shipment. If your needs are special, please let us know.

About our inventory - The LMDC air bearing inventory is selected to be of high quality. We have no interest in marginal or failed components. [FYI, another consignment of miniature motorized spindles by ABT and Seagull arrived recently.] Note: You are now able to buy a complete Air Bearing Spindle System, including Air Dryer and Brushless Motor Drive for under $5K. Please call.

A footnote: Mechanical bearing spindles - if you need a non-air-bearing spindle, we have a few used but very quiet ABEC-7 spindle units available in various sizes.


MULTI-AXIS LINEAR AIR-BEARING SYSTEMS


Just in...

Dover Air Bearing Gantry Systems - (click)
Super Precision "H" Configuration

Workspace = 4-Axis:  650x550x100mm + Theta
Linear Motors = Trilogy model LM310 Linear Motors for X & Y, model LM210 for Z
Linear Encoders = Heidenhain or Renishaw Equivalent
DSP Controller = DeltaTau High Performance PMAC Dover "DMM-2100"
HEPA Enclosure = HEPA Filtered, safety interlock, and electronic rack spaces around bottom skirt of frame.

Applications: Optical and Mechanical Inspection, Pick and Place Assembly, Ultra-fine Probing, Scribing,
Laser Machining and many other R&D and Manufacturing operations.

Call for pricing options.


12.5"x 20"x 0.8"x Theta
Anorad Single Plane Air Bearing Systems
- With Brushless Linear Motors, & Glass linear scales.
Superb system providing very precise ultra flat motion in the single plane of a granite reference plate.
X-Y travel is 12.5"x 20" (325 x 500 mm), with resolution of 100nm (1/10µm)
Vacuum Chuck for 8" Wafers or Substrates on top of
Theta stage with 5000 counts/degree resolution, and
20mm Z motion axis with 200nm resolution are included.
Also included is a honeycomb optical table mounted with
kinematic supports for other equipment suspended over the motion platform.
Includes Anorad IDAC controller with all cables.
Two of these systems are available in like-new condition.
LMDC provides full Anorad Factory Trained Support of these and similar stages.
Complete documentation is provided.
Prices upon submission of RFQ. Delivery = Stock ! Price = $77K


26" x 26" x 8" x Theta
Adept Technologies Model 740
"ULTRA-ONE" ultra-precision 4 axis Cartesian Robot

X-Y-Z MOTION (Accuracy and Resolution):
RANGE: 26" x 26" x 8" (661mm x 661mm x 203mm)
(Photo Full View, rear)
ACCURACY, VOLUME:
+/- 0.000 150" (4 x4x4 microns)
ACCURACY, PLANAR: +/- 0.000 100" (2.5 x2.5 microns)
ACCURACY, EACH AXIS: +/- 0.000 075" ( 2 microns)
REPEATABILITY, EACH AXIS: +/- 0.000 040" ( 1 micron)
RESOLUTION, EACH AXIS +/- 0.000 024" (0.6 micron)

CERAMIC AIR BEARING SLIDES (4-6 cfm at 90-110 psi) MOUNTED ON GRANITE PLATFORM (Photo, close rear)

Ø ROTARY MOTION, & Accuracy:
RANGE: +/- 270 degrees
ACCURACY: +/- 0.002 degrees
PAYLOAD: 13.2 lbs / 5kg
DOWN FORCE: 22.2 lbs /10kg

CONTROLLER: Model 316 (similar to: 315) (Photo Full View) (If, perchance, your needs are for a completely modern controller - we suggest giving the Delta-Tau PMAC a try. The difficulty in installing a new controller is not that great)
SHOP FOOTPRINT:
53" x 53" x 80" tall WEIGHT: 2800 lbs.
For conversation, the original installed cost was $532,000 (including integration charges), set up for ultra fine pitch pick and place. (Photo, front) As a component, anout $250k, but from us:
CONDITION: As Removed from clean room environment where operating.



5 Axis Dover Instruments SpinStand Workstation
5"x 5" Air Bearing Stage
with 12krpm Air Spindle model 315-RF-BDC-ENC
and 4"x 4" Mechanical Bearing Stage

Axis Descriptions

X-Y   Axes Stage model M-CLS-5x5 (image), BDC ServoMotors,
         40lbs payload        1.9SCFM/80psi
Ø    (rotary) Air Spindle model 315-RF-BDC-ENC,20lb load,12krpm,0.8SCFM/80psi
        Mounted on manual very-fine adjust Z Axis platform, BDC motor,     
X2-Y2 Axis Daedal 4"x 4" Mechanical Stage with BDC ServoMotors.

With: Granite Base 30"X 42" on roll-around steel frame (as shown in Dover Catalogue)
With: Air Supply regulators and filter System.
With: Delta-Tau PMAC 8-Axis DSP Motion Controller and Motor Driver Package.




LINEAR MOTION X & X-Y AIR SLIDES

Linear Air Bearing, 4" Travel Voice-Coil Linear Motor System
- Our Best: for ultra precision, ultra resolution research and production applications.
Travel = 4" , Air Slide Cross section = 3" x 3" ,
Kaiser Voice Coil Motor rigidly mounted on Dover Air Slide,
Hewlett Packard Single Beam Interferometer Retro-reflector mounted at working end of the slide.

- for ultra-precision scanners (your own confocal microscope system, anyone ?), positioners, and measurement systems, to offer small examples. - (Photo) - our best system - with built-in HP Single Beam 10705 retro-reflector for laser interferometer to be used in applications requiring nano-meter / micro-inch resolution. Slide, Motor, Retro-reflector on stable cast steel base $3870


Dover ES-400-B-125-T12 Linear Air Slide
Travel:           12"       Cross-section:    1.25" x 1.25" 
Carriage length:  3"        Load capacity:    10 lb 
Operating pressure:  80psi  Air consumption:  0.7 scfm 
Stiffness:        125,000 lbs/inch              PRICE $950/ each.



Dover Linear Air Slide Travel: 6" Cross-section: 2.5" x 1.25" Carriage length: 4" Vertical load capacity: 10 lb. Horizontal load capacity: 25 lb. Operating pressure: 80psi. Air consumption: 1 scfm. Stiffness: 250,000 lbs/inch X 125,000 lbs/inch. PRICE $950/ each.
Dover Linear Air Slide Travel: 8" Cross-section: 2.5" x 2.5" Carriage length: 4" Vertical load capacity: 25lb. Horizontal load capacity: 25lb. Operating pressure: 80psi. Air consumption: 1.5 scfm. Mechanical Stiffness: 250,000 lbs/inch PRICE $950/ each
Dover Linear Slide with Lead Screw + NEMA23 motor mount Travel: 4" Cross-section: 1.5"x 1.5" Carriage length: 3" Mechanical Stiffness: 150,000 lbs/inch Horizontal load capacity: 25lb. Operating pressure: 80psi. Vertical load capacity: 25lb Air consumption: 1.5 scfm. Image (in shipping restraint) UNUSED UNITS 6 available PRICE $1595/ each


X-Y Step-Motor Air Bearing Stages:
At this time we have three large motion air-bearing planar X-Y motion systems in stock for immediate delivery. These systems are used, guaranteed. Please note: multiple forcers may co=exist on the same platen.
1 - Normag 78 x 26" travel with single forcer and driver.
2 - Normag 78 x 31" travel with single forcer and driver.
3 - XYnetics / Megamation 30 x 42" with dual forcers and drivers
(see immediately below)

However we also supply this planar step-motor stages, manufactured in Asia. On an OEM basis. US suppliers of this type of stage are Xynetics and Normag. Repeatability is, theoretically speaking, as good as 1 micron. Please specify your reuirements when you enquire. Currently, the largest non special-order platen is 700 x 800 mm, offering motion of approximately 550 x 650 mm
5"x 5" Dover XY Stage model M-CLS
(image), with BDC Servo Motors,
Universal 10TPI precision screw, including Brushless Motor Drivers.
This stage features extremely high rigidity, planarity, flatness and straightness: $9400
Accessories for Air Bearing Stage:
Dover Air Supply controls, regulators and filter System, in 19" rack. $2500
Dover model 2008
8-Axis DSP Motion Controller Package with Delta-Tau PMAC controller, all supplies. Motor drives sold seperately $6500

125 x 125mm X-Y Air bearing Stage with Ballscrew drive. (image, construction detail) Capable of extremely flat and deviation-free motion, this is the design developed for Perkin-Elmer Censor Steppers. A total of four is available and we are offering at the extremely reasonable price of $2900, each.
145 x 145mm X-Y Air bearing Stage with Ballscrew drive. (Image, detail) Capable of extremely flat and deviation-free motion, this is the design developed for Perkin-Elmer Censor Steppers. A total of six is available and we are offering at the extremely reasonable price of $4250, each.
24"x 36" travel X-Y MEGAMATION "MegaOne" Robot
Dual Head Air Bearing - System. This is a linear X-Y Step - Motor System with "thrilling" performance.

This system was used for precision placing of large package, fine lead surface-mount components.
The Motors are just like Nor-Mag linear X-Y Dual Axis Linear Stepper Motors. (view at) http://normag.com/products.html PRICE = $23K


24"x 24"ANORAD GANTRY Air Bearing, - Linear Motor System - large, 60 lb. Payload (photo) Manufactured by Anorad (Anorad illustration ), and integrated with a very rigid frame.

This is a superb system for very precise motion. Does not include a controller. We recommend newer Anorad controllers, or something aloong the lines of the Delta Tau PMAC. Price = $24K (Although not the same design, an air bearing system of equal travel from Dover would exceed $100K !)


720 x 720 mm ANORAD FP720
Flat Panel Inspection Station , with Ultra Flat Planar Air Bearing Suspension, Linear BDC Motors, granite Gantry system, 1 micron resolution linear glass digital encoders. View this system at: http://www.anorad.com/SolutionsLCD_FPDAppl.html

X-Y SINGLE PLANE AIR BEARING TABLE SYSTEM:
ANORAD FP720 http://www.anorad.com/SolutionsLCD_FPDAppl.html
SUPER - FLAT SINGLE PLANE AIR BEARING SYSTEM.
LINEAR GLASS SCALES
LINEAR DC BRUSHLESS SERVO MOTORS
ACCELERATION = 1 G, VELOCITY = 40"/sec

CONTROLLER: IDAC-2 with PWM Servo Drivers, RS-232 command interface.

TABLE SYSTEM AND FRAME TOGETHER 5000 lbs (est.) = $59K


12.5"x 20"x 0.8"x Theta
Anorad Single Plane Air Bearing Systems
- With Brushless Linear Motors, & Glass linear scales.
Superb system providing very precise ultra flat motion in the single plane of a granite reference plate.
X-Y travel is 12.5"x 20" (325 x 500 mm), with resolution of 100nm (1/10µm)
Vacuum Chuck for 8" Wafers or Substrates on top of
Theta stage with 5000 counts/degree resolution, and
20mm Z motion axis with 200nm resolution are included.
Also included is a honeycomb optical table mounted with
kinematic supports for other equipment suspended over the motion platform.
Includes Anorad IDAC controller with all cables.
Two of these systems are available in like-new condition.
LMDC provides full Anorad Factory Trained Support of these and similar stages.
Complete documentation is provided.
Prices upon submission of RFQ. Delivery = Stock ! Price = $77K

6"x 8" Motion Air Bearing System
- with / HP Laser Plane Mirror Interferometer.

Manufactured for TRE 800 Ultra-Res Mask Aligner
X-Y Table System capable of nanometer resolution:
Plane Mirror Interferometer optics, including HP laser source,
Receivers, Interferometers, Mirrors, Beam Splitters and Beam Benders,
X-Y air bearing Table on a Granite base
You must add readout electronics and servo motor drivers: $ 6950


AIR-SPINDLES & ROTARY MOTION


1) COMPLETE ABT AIR BEARING SPINDLE SYSTEM $3995
Air Bearing Technology (ABT) Spindle, Brushless Driver, Accessories -
for optics, semiconductor, metrology, diamond turning, precision balancing, and many more applications.
(Shipping weight 85 lbs.) (Used, Guaranteed - Air Bearings do not wear out !)
SPINDLE

INTEGRAL MOTOR

BRUSHLESS MOTOR CONTROLLER:

AIR SUPPLY ACCESSORIES:

Other Accessories available with this spindle system:
1) Pre-Cut Granite Surface Plate for Precision Mounting: Center Pre-Cut 4.1" Mounting Hole and Threaded Studs to mount spindle and Linear Slides such as our 4" Kensington with micro-step motors. 24" x 24" x 3" 200 lbs. shipping: $395.
2) 4" (100 mm) Stage Subsystem, With 0.1 micron resolution for optical and other precision applications.
Small, but precise and rigid stage subsystem. (Combine two for X-Y table).
Crossed Roller Bearings for rigid, smooth, straight travel.
Universal 10 pitch ultra precison zero-backlash screw.
Compumotor Model 57-83 microstepping motor, 80 oz-in torque.
Compumotor M57 microstepping motor driver (25,000 steps/rev), TTL "step", "direction" and "shutdown" inputs, Requires 120VAC power
Stage, Motor, Microstepping Drive = $1495 (Quantities available) Quality and Satisfaction Guaranteed


2) PI (Professional Instruments) Models B-4, R-4,
(Mfg's Spec Page), Example shown on Granite Stand, (Photo)
Please call because of limited Availability


3) DOVER 956S AIR BEARING WORK SPINDLES
(with Mavlor 3hp DC motor)
:
Please call because of limited Availability

The motors on these spindles have diamond-turned commutators for the ultimate smoothness, low cogging and extremely long running life, and like all permanent magnet DC motors, they are simple to control: RPMs are proportional to DC Voltage, although for precise control requirements, a tachometer is easily included in the feedback loop. These motors are rated at up to 27 amps, or 3HP, and can provide high torque for machining and turning operations. Without mechanical loading, of course, the current drain is much, much less (0.6A/90VDC). Motor Controller can be as simple as a laboratory DC power supply for stability of 5% or so, or as complex as a servo controller system for phase-locked rotational stability.

Factory cost is about $16k, Developed to meet the un-meetable requirements of the disk drive and Video CD industries. Also used in the diamond tool machining of metal optics for lasers and sensors. CONDITION: "Used, Excellent", and of course we run 'em before we ship 'em, Guaranteed $5900

Nominal Thrust  Diameter         9.0"
Nominal Journal Diameter         5.0"
Nominal Journal Length           6.0"
Hollow shaft to front plate for vacuum chuck
Housing							  Square
Axial Rotational Error (at 2rpm) 2 micro-inch
Radial Rotational Error          2 micro-inch
Axial Load Capacity (at 90psi)   460 lbs  (Ultimate=760)
Radial Load Capacity (at 90psi)  440 lbs  (Ultimate=730)
Air Flow (at 90psi)              1.8 SCFM
Rated Speed                      3000 rpm
Maximum speed                    4000 rpm
Output power at rated speed      1.7 HP         
Rotatary inertia                 9.2 in-oz-sec2
Weight of Assembly               125 lbs
Overall length                   17"
Overall height                   11"
Overall width                    10.5"


4) Federal 3" Air Spindle for Grinders and Machining, with Speed Control.
3 Inch Clamp air spindle:
(new cost $10k+), Stiffness = 1,000,000 lbs/inch, Runout < 1 micro-inch, 10,000 rpm maximum speed. Used, Verified, Guaranteed $4750
5) Hitachi High Speed Miniature Motorized Air Spindle WITH DRIVE 12,000 rpm maximum speed. Used, Like New - $950
We have no schematics for the drive assembly, but as is the case with almost all spindles, your everyday three phase BDC motor drive will work just fine.

6) Dover 12k RPM High Speed Motorized Instrument Spindle,
Model 313-RF-BDC-ENC.
Stiffness = 200,000 lbs/inch, Runout < 2 micro-inch, 12,000 rpm max, 20lb load. 80psi/0.7cfm. Used, Verified, Guaranteed $2750

6a) Dover High Speed Spindle model 315-RF-BDC-ENC,20lb load,12krpm, Mounted on manual very-fine adjust Z Axis platform, BDC motor, 0.8SCFM/80psi, includes Brushless Motor Driver $5500
7) Seagull 12k RPM Compact "Stealth II" (top) (side) model
High Speed Motorized air spindles with Encoder and drive.
Used, guaranteed, quite good condition.
12k RPM,
80 PSI, 75/35 lbs. RADIAL LOAD, 300/175 lbs. AXIAL LOAD,
1024 line ENCODER, 30V/phase BRUSHLESS MOTOR
These are premier spindles, preferred in the exquisitly critical disk-drive industry.
Stiffness = 200,000 lbs/inch, Runout <1 micro-inch, 10,000 rpm max, 80psi/0.5cfm.
Used, Verified, Guaranteed $2950
8) Westwind model 1690 dual air bearing spindle block
°°° 20k RPM HS spindle (capable of 35000 rpm with appropriate motor)
°°° Ultra-Precision Theta Spindle wtih HP angle encoder and Voice-coil angle motor.
for "R x Theta" diamond turning systems and many other uses -
New in Boxes = $4900
Used = $1900

PHASE LOCKED SPINDLE DRIVER for WESTWIND SPINDLES: MCS LA2000, Model 62 (unused) = $775


DOVER Rotary Positioner Spindle model 743-RF-XX-ENC

Nominal Thrust  Diameter         7.0"
Nominal Journal Diameter         4.0"
Nominal Journal Length           3.0"
Hollow shaft to front plate for vacuum chuck
Housing  Round, Flanged
Axial Rotational Error (at 2rpm) 2 micro-inch
Radial Rotational Error          2 micro-inch
Axial Load Capacity (at 90psi)   290 lbs  (Ultimate=760)
Radial Load Capacity (at 90psi)  210 lbs  (Ultimate=730)
Air Flow (at 90psi)              0.9 SCFM at 90psi
Rated Speed                      3000 rpm
Maximum speed                    4000 rpm        
Rotary inertia                   2.9 in-oz-sec2
PRICE                      $8900



CONTROLS & DRIVERS
for Motors, Spindles & Slides:

PRECISION MOTION CONTROLLERS

1) Dover / Delta-Tau model 2008 up to 8-Axis DSP Motion Controller Package with Delta-Tau PMAC controller, all supplies. Motor drives sold seperately $ call
2) Dover / Delta-Tau model 2100
up to 8-Axis DSP Motion Controller Package with Delta-Tau PMAC controller, all supplies. Motor drives sold seperately $ call

BRUSHLESS MOTOR DRIVERS, Phase-Lock Capable
1) MFM Model BDC 0610 This as an amplifier with an interesting history. Thousands of these amps found their way into precision instruments costing $100,000+ and requiring the minimum in EMI and the maximum in smoothness. Practical as always, the MFM company (now a part of Bayside Motion) also gave the user the option of a full digital output. Nonetheless, the grea majority of these drives were used for spindles from 0 - 30kRPM, especially ultra-smooth ABEC7 and Air Spindles for diamond turning, optics and disk research. Shown in the image are the BNC inputs for external frequency synchronizing signal. Bi-Directional. Accepts motor encoder signals. Generally the max RPM is limited by EMF rather than frequency considerations. Reliable drive.
Featuring Sine Wave Output Amplifiers for ultimate smoothness, 2.5A cont., 6 A peak, 80V p-p per phase, 1/3 HP, 17"x 6"x 6.5", 19 lbs. Manual Included USED/guaranteed = $479

2) MFM Model BDC 0610
with RS-232 Input, Manual Included USED/guaranteed = $595

2) Motion Control Systems MCS LA2000, Model 62
(specs) "Combining a smaller package with the features of the popular model 61, the model 62 represents a significant advantage to OEMs concerned about cabinet space. All connectors on the model 62 are mounted on one face in order to minimize the space needed for cables. Along with RS232 control, the model 62 also has an analog torque mode and TTL inputs for enable, direction and external frequency."
MCS LA2000, Model 62 UNUSED = $775 (new cost = $2900)


Air for Air Bearings
Air Dryers, Regulators, Particle Filters and Safety Switches
Dover Air Supply System, regulators and filter System, in 19" rack. $1900
Festo Air Control Panel
for conditioning 90-120 psi inlet air for air spindles

Includes:      Inlet Pressure Switch
                      Pressure Switches with Gages  (2)
                      Solenoid Valves                              (2)
                       Regulators                                       (2)
                      Trap, Filter, Deliquescent Dryer, Micron Filter
All mounted on 11.75" x 25" Aluminum Panel
Includes Manual and parts list                        $975


OF SPECIAL INTEREST - for DIAMOND TURNING:
Precision 14" x .5" Copper over Aluminum Disks
for optical surface diamond turning use. Precision balanced about a 1/4" center locating hole. Plated with .5mm of pure copper, Annealed and stress relieved. Created for producing laser disk stamping masters. We've made some terrific large diameter IR mirrors from these $295/ea

OPTICAL TABLE Workstation for Spindles, Stages, Fiber Aligners
18"x 24" Just In: ELECTRO-OPTIC WORKSTATION NEW, UNUSED
(More rigid than granite !!!) with 4" thick 18"x 24" Newport Optical breadboard
4" and 3" finished holes
for spindles, laser beams, cables and mechanisms.
Mounted on vibration damping elastic supports on top of
19" Electronics Rack Cabinet with casters
for easy rolling about the lab. $1175

GRANITE Surface Plates to mount Spindles & Stages
Pre-Cut Granite Surface Plate for Precision Mounting: Center Pre-Cut 4.1" Mounting Hole and Threaded Studs to mount spindle and Linear Slides such as our 4" Kensington with micro-step motors. 24" x 24" x 3" 200 lbs. shipping: $195.


LMDC 3101 Whipple Road, Union City, CA 94587, 510-429-1060, -1065,
E-MAIL (anti-spam):
[inquiry AT lasermotion DOT com], [sales AT lasermotion DOT com], [Purchasing AT lasermotion DOT com]
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