PIC Design - RBC Bearings

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TECHNICAL SECTIONAxial Take-Up MechanismsTYPICAL SOLUTIONS —Backlash Compensation Without High Drag TorqueThe standard method for takingup backlash is to bias two nuthalves axially using some typeof compliant spring. (Wavywasher, compression spring,rubber washer, etc.)The unit is very stiff in the direction in which the nut half is loadedagainst the flank of the screw thread. However, in the direction awayfrom the screw thread, the nutis only as axially stiff as theamount of preload which thespring exerts.For example, if the maximumaxial load which the system issubjected to is 50 lbs., the amount of spring preload must be equal toor greater than 50 lbs. in order to maintain intimate screw/nut contact.The problems arising from preloading in this manner are increasedtorque and nut wear.An alternate method would thus be to replace the spring with a stiffspacer sized to fit exactly between the two nut halves.There would then be noexcessive preload force at theinterface and the unit wouldbe capable of carrying highaxial loads in either directionwith no backlash.This is fine initially. However, asuse time increases, wear beginson the nut threads causing a gapto develop between the spacer(L) and the nut halves.This gap (Δ1 +Δ 2) is now theamount of backlash which has developed in the unit. This backlash can beremoved by replacing the stiff spacer with a new spacer equal to(L + Δ1 +Δ 2). This process, although effective, would be extremelycostly and difficult to implement on a continuous basis.A PATENTED SOLUTIONWhat is needed, then, is a stiff spacer which will continually expand toaccommodate the wear which occurs during use.This is done by creating a spacer threaded at one end with a complimentarynut torsionally biased to advance when a gap develops.The thread at the end of the spacer is a fine helix such that an axial loadwill not backdrive the nut oncespacer growth has occurred.The amount of preload on theunit is only that necessary toturn the spacer nut on thespacer rod and is independentof the external systemloadings. THIS PATENTEDDESIGN HAS A SELF-WEAR COMPENSATING UNIT WHICH HAS EX-TREMELY LOW FRICTIONAL DRAG TORQUE YET HIGH AXIAL STIFF-NESS.JOURNAL/END MACHINING & MOUNTING ACCESORIESFor Use With Series S10 and S12 BlocksUNDERCUT - .04 Max Width.015 Max DepthD +.0000-.0003 D +.000-.001End MachiningAvailable at an additional cost. PIC offers a typical journal for use with abearing/ mount support. Custom end machining available. Send drawingwith your RFQ.— Please Note:— Bearing Shaft Spacers are listed in Catalog Section 6— Couplings are listed in Catalog Section 7— Linear Bearings and Shafting are listed in Catalog Section 4LDThe data presented below will be useful when designing lead screw systemsusing Series S10 Universal Bearing Blocks and Series S12 Bearing Blocks.When Using Series S10 Universal Bearing BlocksScrewDia.DJournalDia.LJournalLengthBall Retaining Shim ShaftBearing Ring Pack Collar3/16 0.1247 1.00 E1-3 Z1-1 SP-06 C1-11 /4 0.1247 1.00 E1-3 Z1-1 SP-06 C1-15 /16 0.1872 1.12 E1-8 Z1-2 SP-08 C1-23 /8 0.2497 1.12 E1-9 Z1-3 SP-10 C1-37 /16 0.2497 1.12 E1-9 Z1-3 SP-10 C1-31/2 0.3747 1.38 E1-15 Z1-5 SP-14 C1-105/8 0.3747 1.38 E1-15 Z1-5 SP-14 C1-10When Using Series S12 Bearing BlocksD L FlangedScrewFlange FlangeJournal JournalBall BearingDia.Adaptor SpacerDia. LengthBearing Housing3 /16 0.1247 0.6 LMB-4 E2-3 S12-41 /4 0.1247 0.6 LMB-4 E2-3 S12-45 /16 0.1872 0.75 LMB-6 E2-6 S12-53/8 0.2497 0.813 LMB-6 E2-9 S12-87/16 0.2497 0.813 LMB-8 E2-9 S12-81/2 0.2497 0.813 LMB-8 SMB-8 E2-9 S12-85 /8 0.3747 1.083 LMB-10 SMB-10 E2-15 S12-103-4Phone: 800-243-6125 ■ FAX: 203-758-8271E-Mail: sales@pic-design.comDESIGN®www.pic-design.comInteractive catalog ■ CAD ■ e-commerce
PRECISION PS STYLE LEAD SCREWSFor use with PZ, PK and PV Style Nuts.0006 Inch/ Inch (mm/ mm) Lead AccuracyPart NumberPS—Material: 303 Stainless SteelRepeatability: .000050 inchesSystem (lead screw and nut) SpecificationOperating Temperature Range: 32 O F - 200 O F (0 O C-93 O C)Coefficient Of Friction (Nut To Screw): .08 Static.15 Dynamic(.09 when TFE coated)Features:● Precision rolled● 303 Stainless steel used for●uniform grain structure toimprove lead accuracy●●Lead screw accuracy of.0006 in./ in. (mm/ mm)Straightness tolerance of.003 in/ ft.Screws have burnished finishof better than 16 micro-inchdue to the rolling process●Available with custom TFEcoating to extend normal life inas much as 300%■Part Numberfrom Table■Coating:T = TeflonBlank = no coating■Length in inches(Consult factory for special lengths)Screw Dia.1 /43 /87 /161 /23 /4Lead Root Dia. Efficiency EF Standard** Part No.(in. or mm) in. (mm) ( % ) Length (in.)0.062 0.170 52 PS4006 -0.250 0.168 79PS4025 -12, 36, 721.000 0.170 84 PS4100 -1.5 mm 0.172 (4.37) 51 PS4M01.5 -0.100 0.266 53 PS6010 - *0.200 0.266 69 PS6020 -0.300 0.255 76 PS6030 -0.500 0.265 81PS6050 - *12, 36, 721.000 0.254 84 PS6100 -1.200 0.254 84 PS6120 -2 mm 0.254 (6.45) 47 PS6M02 -5 mm 0.266 (6.76) 69 PS6M05 -0.250 0.325 70 PS7025 -0.500 0.328 8024, 48, 72PS7050 -3 mm 0.363 (9.22) 52 PS7M03 -5 mm 0.313 (7.95) 65 PS7M05 -0.050 0.433 28 PS8005 -0.100 0.364 46 PS8010 - *0.200 0.366 63PS8020 - *24, 48, 720.500 0.352 79 PS8050 -1.000 0.372 84 PS8100 - *1.000 0.619 81PS12100 - *24, 48, 722.000 0.611 84 PS12200 -NOTES:When Teflon coating is used, do not use lubrication. Random voids in the teflon coating have no effecton system performance. The lubricant, although solid, has some “spreading” ability as in fluid lubricantsUncoated screws should not require lubrication. For those instances where lubrication may be desired, asilicone or lithium-based lubricant is suggested.** Left hand thread available.** For Teflon coating insert aT before dash.For Example: PS4006T - 72www.pic-design.comInteractive catalog ■ CAD ■ e-commerceDESIGN®Phone: 800-243-6125 ■ FAX: 203-758-8271E-Mail: sales@pic-design.com 3-5
Page 7 and 8: CATALOG SERIES INDEXIf a Part Numbe
Page 9 and 10: RDESIGNRECISIONNDUSTRIALOMPONENTSRL
Page 11 and 12: LINEAR MOTION SYSTEMSSTEPBEARING SE
Page 16 and 17: TECHNICAL SECTIONSystem 10 — Econ
Page 18 and 19: LINEAR MOTION SYSTEMS WITH INTEGRAL
Page 20 and 21: POSITIONING STAGESBall or Crossed R
Page 22 and 23: ROTARY TABLERatios 45:1, 90:1, 180:
Page 24 and 25: TECHNICAL SECTIONTypical coefficien
Page 26 and 27: BALL SLIDESCarriage Hole SpacingTot
Page 28 and 29: ALUMINUM CROSSED ROLLER SLIDESMeasu
Page 30 and 31: ECONOMY CROSSED ROLLER SLIDES.0001"
Page 32 and 33: BALL SLIDE GUIDESCompact Designh 1S
Page 34 and 35: X-XY-XYZ POSITIONERS WITH MICROMETE
Page 36 and 37: TECHNICAL SECTIONLead Screw Assembl
Page 40 and 41: PZ STYLE LEAD SCREW NUTSFor Use Wit
Page 42 and 43: PV STYLE LEAD SCREW NUTSFor Use Wit
Page 44 and 45: ACME LEAD SCREW POWER NUTSInch and
Page 46 and 47: ANR STYLE ADJUSTABLE COMPLIANT NUTS
Page 48: BEARING HOUSING BLOCKSDiagram 1Mate
Page 58 and 59: TECHNICAL SECTIONWhatever your appl
Page 60 and 61: PRE-DRILLED SHAFTSTYPE D Solid AISI
Page 62 and 63: SHAFT SUPPORT BLOCKS / HANGERSClamp
Page 64 and 65: RECIRCULATING BALL LINEAR BEARINGSI
Page 66 and 67: SELF-ALIGNING BEARINGSInch and Metr
Page 68 and 69: PIC CERAMIC COATED LINEAR BEARINGSL
Page 70 and 71: METRIC LINEAR BEARING HOUSINGFor Cl
Page 72 and 73: NOTES4-16Phone: 800-243-6125 ■ FA
Page 74 and 75: TECHNICAL SECTIONApplication Inform
Page 76 and 77: NO-SLIP SERIESPIC’s No-Slip and N
Page 78 and 79: NO-SLIP POSITIVE DRIVE BELT - ULTRA
Page 80 and 81: NO-SLIP POSITIVE DRIVE BELT32DP, .0
Page 82 and 83: NO-SLIP POSITIVE DRIVE BELT24 DP .1
Page 84 and 85: NO-SLIP POSITIVE DRIVE BELT.1475CP,
Page 86 and 87: NO-SLIP POSITIVE DRIVE BELT20DP, .1
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NO-SLIP POSITIVE DRIVE BELT20DP, .1
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NO-SLIP POSITIVE DRIVE BELT “CHAI
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NO-SLIDE TIMING BELTS40 DP (.0816 P
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NO-SLIDE TIMING BELTS3 /8" Pitch, 1
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E*P*S DRIVER SYSTEM SELECTION PROCE
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E*P*S TIMING BELTS.080 Pitch, 1 /8"
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E*P*S TIMING BELTS40 D.P. (.0816 Pi
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E*P*S TIMING BELTS1 /5" (.200) Pitc
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E*P*S TIMING PULLEYS1 /5" (.200) Pi
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E*P*S HTD ® TIMING BELTS3mm HTD ®
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E*P*S HTD ® TIMING BELTS5mm HTD ®
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ROUND BELTS AND PRECISION GROOVED P
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ROUND BELTS AND PRECISION GROOVED P
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.1475 PITCH MINIATURE PITCH SPROCKE
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TECHNICAL SECTIONTo help customers
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PRECISION BALL BEARINGSABEC 1,3, An
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SINTERED BRONZE BEARINGSSleeve & Fl
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NON-METALLIC BEARINGSSleeve & Flang
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NON-CORROSIVE BALL BEARINGSInch & M
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ROD ENDSNylon & Phosphor Bronze Rac
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BEARING HOUSING — 3 /8" , 1 /2" a
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OUTER RACE SHIM SPACERSMaterial:300
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LAMINATED BRASS SHIM SPACERSPRECISI
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ADJUSTABLE HUB CLAMPRef.Gear Bore*N
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PRECISION GROUND SHAFTING — 1 /32
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PRECISION CASE HARDENED & GROUND SH
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RDESIGNRECISIONNDUSTRIALOMPONENTSRC
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FLANGE MOUNTED-POWER OFF BRAKES24 V
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SLIP CLUTCHES — CONTINUOUS SLIP O
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ROLLER CLUTCHES■ Ideal for indexi
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BELLOWS COUPLINGS.12 to 3 /8" Bore
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MULTI-JAW COUPLINGS — 64 PITCH1 /
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FLEXIBLE-ZERO BACKLASH COUPLING1 /8
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PRECISION UNIVERSAL JOINTS1 /8", 3
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DESIGNRPRECISION HARDWARERRECISIONN
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SOCKET HEAD SHOULDER SCREWS303 & Ha
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“SILVER-GRIP” SET SCREWSInch an
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SET SCREWS — CUP POINTConforming
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PRECISION WASHERSMachinedC ±.006 A
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METRIC RETAINING RINGSAll Dimension
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PRECISION SYNCHRO MOUNTING CLAMPSTa
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METRIC PRECISION DOWEL PINS — PRE
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KNURLED THUMB SCREWS#4-40 To 1 /4-2
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STAINLESS PRECISION SPRINGSCompress
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HANDLES — CHASSIS5/16min.Material
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PRECISION ENGRAVED DRUM DIALSClockw
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PRECISION HAND CRANKS.1248.1873.249
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RDESIGNRECISIONNDUSTRIALOMPONENTSRM
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TECHNICAL SECTIONStructural Design
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MOUNTING COMPONENTSConnecting Angle
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MOUNTING COMPONENTSAdjustable Joint
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FASTENING HARDWAREFasteners / T-Slo
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ACCESSORIESStandard & [MiniatureT-S
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RDESIGNRECISIONNDUSTRIALOMPONENTSRE
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PRECISION BREADBOARD KITSPRECISION
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DESIGNRSPEED REDUCER & GEAR HEADSRR
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PRECISION GEAR HEADS1 1 /16 " Dia.
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HELICAL GEAR ASSEMBLIES — 48 PITC
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GENEVA MECHANISMSIntermittent Motio
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RDESIGNRECISIONNDUSTRIALOMPONENTSRG
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TECHNICAL SECTIONTable of Pitch Dia
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SPUR GEAR-16 PITCH — 3 /16" Face
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SPUR GEAR-24 PITCH — 1 /8" Face W
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SPUR GEAR-96 PITCH — 1 /16", 3 /3
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SPUR GEAR-120 PITCH — 1 /16", 3 /
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FINE PITCH RACK DATA — 24 to 120
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DELRIN ® SPUR GEAR-24 PITCH — 3
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DELRIN ® SPUR GEAR-48 PITCH — 3
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PRECISION CLUSTER GEARSAGMA 10CLUST
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ANTI-BACKLASH GEAR-24 PITCH — 3 /
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ANTI-BACKLASH GEAR-48 PITCH — .10
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HELICAL GEAR-48 NORMAL PITCH 3 /16"
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ANTI-BACKLASH WORM WHEEL- 48 PITCHS
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ANTI-BACKLASH WORM WHEEL- 64 PITCH1
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MITER & BEVEL GEARS- 72 PITCH — 2
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GEAR BLANKS — NO TEETHPin Hub —
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SPUR GEARS — 0.3 Module ■3.18mm
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SPUR GEARS — 0.4 Module ■3.18 a
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SPUR GEARS — 0.8 Module ■9.52 F
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GEAR & DIAL HUB-PIN TYPE — 1 /8",
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RDESIGNRECISIONNDUSTRIALOMPONENTSRT
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TECHNICAL SECTIONSECTION 2. Basic G
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TECHNICAL SECTIONSECTION 2. Basic G
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TECHNICAL SECTIONSECTION 3. Backlas
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TECHNICAL SECTIONSECTION 5. Toleran
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TECHNICAL SECTIONSECTION 7. Equival
Page 287 and 288:
ALPHABETICAL INDEXPRODUCT DESCRIPTI
Page 289 and 290:
ALPHABETICAL INDEXPRODUCT DESCRIPTI
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PIC Design - RBC Bearings

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