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Miki Pulley COUPLINGS Manual
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Miki Pulley COUPLINGS Manual

Flexible couplings and hub-shaft connections
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Flexible Couplings and Hub-shaft Connections
COUPLINGS

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Summary of Contents for Miki Pulley COUPLINGS

  • Page 1 Flexible Couplings and Hub-shaft Connections COUPLINGS...
  • Page 2 Through Finite Element Analysis SERVO FLEX is an ultrahigh-rigidity flexible coupling derived from Miki Pulley's unique development capability. It has gained high reliability by its layered plate spring format as its best shape, which is rigid in the torsional direction and flexible in the bending asymmetrical and axial directions.
  • Page 4 The role of flexible couplings is not only simply to joint the driving shaft and driven shaft but also to resolve the above problems by selecting appropriate flexible couplings suitable for each purpose.
  • Page 5 F L E X I B L E C O U P L I N G S No Backlash The power transmission of SERVO FLEX is performed entirely by a friction lock, enabling no backlash, accurate shaft rotation, and ultraprecision control operation. Elastic (metal) coupling Elastic (rubber and resin) coupling Corrected coupling...
  • Page 6 S E R V O F L E X Full Selection MODEL ò Superbly strong high-strength aluminum alloy adopted ò Low inertia achieved by the shaft diameter interlock-type hub outer diameter ò No hazardous substances used, RoHS Directive compliant ò High-rigidity single element ò...
  • Page 7 F U L L L I N E U P SFF · SFM MODEL ò SFM for the machine tool main shaft, SFF for the feed shaft ò The main shaft-compatible type allows a maximum rotation speed of 20000 min –1 ò...
  • Page 8 An ideal-shaped plate spring, designed based on thorough analysis using the advanced finite element method (FEM) is applied for the element. Two types of couplings, either a high-rigidity type with one element or a high-flexibility type with two elements using a spacer, can be selected.
  • Page 9 A Wide Range of Installation Methods ò By adoption of the clamp method, installation is easy and exact. ò The servo motor taper shaft can be optionally supported. SFC MODEL...
  • Page 10 SFC MODEL High-strength aluminum alloy hub SFC High-rigidity single element SFC-£SA2-£B-£B Clamp lock High-flexibility double element SFC-£DA2-£B-£B High-rigidity single element SFC-£SA2-£B-£BC + Taper shaft compatible High-flexibility double element SFC-£DA2-£B-£BC Structure and Material ¢ SFC-SA2 SFC-DA2 Clamp bolt material: SCM435 Clamp bolt material: SCM435 Surface treatment: Solid lubricant film treatment Surface treatment: Solid lubricant film treatment Element material: Plate spring SUS304...
  • Page 11 Power transmission is performed entirely by a friction lock. There is no backlash. A specialized jig is used for assembling couplings, so high-precision concentricity is ensured. It is also compatible with the servo motor taper shaft by installing a taper adapter.
  • Page 12 SFC MODEL SFC-SA2 Specification ¢ Max. permissible misalignment Max. rotation Permissible Torsional Radial Moment of inertia Mass Shape speed Model tourque stiffness displacement Price Angular Axial Parallel offset TYPE misalignment displacement [N·m] [N·m/rad] [N/mm] [kg·m [kg] [min –1 [mm] [ ˚ ] [mm] SFC-005SA2 0.02...
  • Page 13 Standard bore diameter ¢ Standard bore diameter d1·d2 [mm] Model 6.35 9.525 10 30 32 35 38 40 SFC-005SA2 ò ò ò SFC-010SA2 ò ò ò ò ò ò SFC-020SA2 1.2 ò ò ò ò ò ò ò SFC-030SA2 2.8 3.4 ò...
  • Page 14 SFC MODEL SFC-DA2 Specification ¢ Max. Max. permissible misalignment Permissible Torsional Radial Moment of Mass rotation Shape Model torque stiffness displacement inertia Price Angular Axial Parallel offset speed TYPE misalignment displacement [N·m] [N·m/rad] [N/mm] [kg·m [kg] [mm] [min –1 [ ˚ ] [mm] 0.05 0.5 (one side)
  • Page 15 Standard bore diameter ¢ Standard bore diameter d1·d2 [mm] Model 6.35 9.525 10 30 32 35 38 40 SFC-005DA2 ò ò ò SFC-010DA2 ò ò ò ò ò ò SFC-020DA2 1.2 ò ò ò ò ò ò ò SFC-030DA2 2.8 3.4 ò...
  • Page 16 SFC MODEL Design Check Items Spring characteristics ¢ ò Axial Load and Displacement Amount 100SA2 SFC-£SA2 100SA2 080SA2 090SA2 080SA2 090SA2 060SA2 035SA2 060SA2 035SA2 040SA2 040SA2 050SA2 050SA2 010SA2 040SA2 040SA2 030SA2 050SA2 050SA2 010SA2 020SA2 030SA2 005SA2 020SA2 005SA2 Displacement [mm] Displacement [mm]...
  • Page 17 Selection procedure ¢ (1) Calculate torque Ta applied to the coupling based on the In servo motor drive, multiply the service factor K=1.2 to 1.5 motor output P and coupling operating rotation speed n. by the maximum torque of servo motor Ts. Td = Ts ×...
  • Page 18 SFC MODEL Design Check Items Feed-screw systems Mounting ¢ ¢ (1) Oscillation phenomena of servo motors The concentricity of the right and left bore diameters is ensured If the eigenfrequency of the entire feed-screw system is under by adjusting with an specialized jig. However, the assembly 400 to 500Hz, oscillation may occur depending on the gain accuracy may be disturbed if a strong impact is given to the adjustment of the servo motor.
  • Page 19 Certain shaft installation positioning may result in damage problem in terms of performance of the couplings. Contact us to the coupling itself and lowering of shaft-retaining force. It for advice regarding whether bore diameter surface treatment is recommended to use a circular shaft for fully satisfactory should be used according to the customers’...
  • Page 20 SERVO FLEX: A Wide Selection of Metal Plate Spring Couplings Made of Steel Three types of couplings, either a high-rigidity type with one element, a high-flexibility type with two elements using a spacer, or a floating shaft with configurable spacer length can be selected.
  • Page 21 Available to Assemble in Parts ò The product can be delivered in parts, so that this can be used even for designs where parts cannot be mounted on the finished item. S, W, and G types ò A finished-assembly product is also available as a standard.
  • Page 22 SFS MODEL General-purpose steel hub SFS High-rigidity single element SFS-£S Pilot bore High-flexibility double element SFS-£W Double-element floating shaft SFS-£G High-rigidity single element SFS-£S-£H-£H Key/set screw item High-flexibility double element SFS-£W-£H-£H Double-element floating shaft SFS-£G-£H-£H High-precision friction lock High-rigidity single element SFS-£S-£M-£M High-flexibility double element SFS-£W-£M-£M...
  • Page 23 SFS-£S-£M-£M based on Miki Pulley’s standard bore processing s p e c i f i c a t i o n s . T h e p a r t s c a n b e a s s e m b l e d immediately after delivery to the customer.
  • Page 24 SFS MODEL SFS-S Specification ¢ Max. permissible misalignment Max. rotation Permissible Torsional Radial Moment of Mass Model torque speed stiffness displacement inertia Price Angular misalignment Axial displacement [N·m] [min [N·m/rad] [N/mm] [kg·m2] [kg] [ ˚ ] [mm] ±0.6 25000 16000 0.11×10 0.30 –...
  • Page 25 Dimensions ¢ SFS-£S-£M-£M C A D C A D Model CAD file No. − Screw bore for Screw bore for SFS-06S dismounting M2 dismounting M2 SFS-M11 SFS-M12 SFS-M13 − SFS-08S SFS-M14 SFS-M15 SFS-M16 SFS-M17 − SFS-09S SFS-M18 SFS-M19 SFS-M110 − SFS-10S SFS-M21 SFS-M22 SFS-M23 SFS-M24 −...
  • Page 26 SFS MODEL SFS-W Specification ¢ Max. permissible misalignment Permissible Max. rotation Torsional Radial Moment of Mass Model torque speed stiffness displacement inertia Price Angular Axial Parallel offset misalignment displacement [N·m] [min [N·m/rad] [N/mm] [kg·m [kg] [mm] [ ˚ ] [mm] 1 (one side) ±1.2 10000...
  • Page 27 Dimensions ¢ SFS-£W-£M-£M C A D C A D Model CAD file No. Spacer − Screw bore for S LP S SFS-06W dismounting M2 SFS-W8 SFS-M11 SFS-M12 SFS-M13 − Spacer SFS-08W SFS-W9 SFS-M14 SFS-M15 SFS-M16 SFS-M17 Spacer − SFS-09W SFS-W10 SFS-M18 SFS-M19 SFS-M110 −...
  • Page 28 SFS MODEL SFS-G Specification ¢ Max. permissible misalignment Permissible Max. rotation Torsional Radial Moment of Mass Model torque speed stiffness displacement inertia Price Angular Axial Parallel offset misalignment displacement [N·m] [min [N·m/rad] [N/mm] [kg·m [kg] [mm] [ ˚ ] [mm] 1 (one side) ±1.2 20000...
  • Page 29 Dimensions ¢ SFS-£G-£M-£M C A D C A D Model CAD file No. Spacer − Screw bore for SFS-06G SFS-G8 SFS-M11 SFS-M12 SFS-M13 − dismounting M2 Spacer SFS-08G SFS-G9 SFS-M14 SFS-M15 SFS-M16 SFS-M17 Spacer − SFS-09G SFS-G10 SFS-M18 SFS-M19 SFS-M110 −...
  • Page 30 SFS MODEL Standard Bore Processing Specification Dimensions ¢ ¢ SFS-S • Bore processing is available upon request. Products are stored with pilot bores. • Bores are machined based on the following specification. • Assign as described below when ordering. E.g.) SFS-10W 32H-38H •...
  • Page 31 Centering and finishing in flange bore drilling ¢ If customers are planning to apply bore diameter processing using pilot bore items by themselves, the instructions below should be followed: ò Centering ò SHPANNRING specification According to Figure A , check the Finish as illustrated in Figure B when center run-out of each size by the 0.02...
  • Page 32 SFS MODEL SFS-SS Specification ¢ Max. permissible misalignment Permissible Max. rotation Torsional Radial Moment of Mass Model torque speed stiffness displacement inertia Price Angular Axial Parallel offset misalignment displacement [N·m] [min [N·m/rad] [N/mm] [kg·m [kg] [mm] [ ˚ ] [mm] SFS-080SS 0.02 ±0.55...
  • Page 33 Combination of standard bore diameter ¢ Standard bore diameter d2 [mm] SFS-080SS ò ò ò ò ò ò Standard ò ò ò ò ò bore ò ò ò ò diameter ò ò ò ò ò [mm] ò Standard bore diameter d2 [mm] SFS-090SS ò...
  • Page 34 SFS MODEL SFS-DS Specification ¢ Max. permissible misalignment Max. rotation Torsional Radial Moment of Mass Permissible Model speed stiffness displacement inertia Price Angular Axial Parallel offset torque [N·m] misalignment displacement [min [N·m/rad] [N/mm] [kg·m [kg] [mm] [ ˚ ] [mm] SFS-080DS 1 (one side) ±1.1...
  • Page 35 Combination of standard bore diameter ¢ Standard bore diameter d2 [mm] SFS-080DS ò ò ò ò ò ò Standard ò ò ò ò ò bore ò ò ò ò diameter ò ò ò ò ò [mm] ò Standard bore diameter d2 [mm] SFS-090DS ò...
  • Page 36 SFS MODEL Design Check Items How to evaluate the eigenfrequency of Selection procedure ¢ ¢ feed-screw system (1) Calculate torque Ta applied to the coupling based on the motor output P and coupling operating rotation speed n. (1) Select the coupling according to the normal operating torque and maximum torque of the servo motor/stepping motor.
  • Page 37 Coupling size hub, and finally installing the element (spacer). SFS-S/W/G-M-M Reamer bolt type can even insert shafts after assembling couplings by Tightening torque [N·m] installing elements on the flange hub and centering them. When Pressure bolt doing so, see mounting method of SFS-SS/DS models.
  • Page 38 SFS MODEL Design Check Items Centering method Dismounting ¢ ¢ ò Parallel Offset (ε) (1) Confirm if any torque or axial direction load does not act on the coupling. (Torque may be applied to the coupling when a Fix the dial gauge on one side of the shaft and read the run-out safety break control system is activated.
  • Page 39 Pressure bolt nominal desig. × length 40.5 Recommended N dimensions [mm] ò SFS-S This is an example of a pilot bore-type flange hub processed for Miki Pulley’s shaft lock, POSI LOCK PSL-K, and jointed with a straight shaft. Ball screw shaft POSI LOCK POSI LOCK...
  • Page 40 A selection of SFF models is available for use by the feed shaft, and a selection of SFM models is available for use by the main shaft. Two types of couplings, either a high-rigidity type with one element or a high-flexibility type with two elements using a spacer, can be selected respectively.
  • Page 41 High-speed Rotation, High-precision Positioning ò The coupling specially designed for high-speed applications allows a maximum rotation speed of 20,000 min SFM model ò Centering mechanisms are set for both the flange and pressure flange to achieve high-precision positioning. SFM model SFF ·...
  • Page 42 SFF · SFM MODEL SERVO FLEX for machine tools SFF for the Friction lock High-rigidity single element SFF-£SS-£K-£K feed shaft High-flexibility double element SFF-£DS-£K-£K SFM for the High-precision High-rigidity single element SFM-£SS-£K-£K main shaft friction lock SFM-£DS-£K-£K High-flexibility double element The Maximum Rotation Speed of 20,000 High-precision Positioning ¢...
  • Page 43 Structure and Material ¢ Flange material: Equivalent of S45C SFF-SS Hexagon socket head cap screw: Equivalent of SCM435 SFF-DS Surface treatment: Black oxide finish Surface treatment: Black oxide finish Sleeve material: Equivalent of S45C Sleeve material: Equivalent of S45C Surface treatment: Black oxide finish Surface treatment: Black oxide finish Sleeve material: Equivalent of S45C Flange material: Equivalent of S45C...
  • Page 44 SFF · SFM MODEL SFF-SS Specification ¢ Max. permissible misalignment Permissible Max. rotation Torsional Radial Moment of Mass Model torque speed stiffness displacement inertia Price Angular Radial Parallel offset misalignment displacement [N·m] [min [N·m/rad] [N/mm] [kg·m [kg] [mm] [ ˚ ] [mm] SFF-070SS 0.02...
  • Page 45 Combination of standard bore diameter ¢ Standard bore diameter d2 [mm] SFF-070SS ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò Standard bore diameter ò...
  • Page 46 SFF · SFM MODEL SFF-DS Specification ¢ Max. permissible misalignment Permissible Max. rotation Torsional Radial Moment of Mass Model torque speed stiffness displacement inertia Price Angular Axial Parallel offset misalignment displacement [N·m] [min [N·m/rad] [N/mm] [kg·m [kg] [mm] [ ˚ ] [mm] SFF-070DS 0.25...
  • Page 47 Combination of standard bore diameter ¢ Standard bore diameter d2 [mm] SFF-070DS ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò Standard bore diameter ò...
  • Page 48 SFF · SFM MODEL SFM-SS Specification ¢ Max. permissible misalignment Permissible Max. rotation Torsional Radial Moment of Mass Model torque speed stiffness displacement inertia Price Angular Parallel offset Axial displacement misalignment [N·m] [min [N·m/rad] [N/mm] [kg·m [kg] [mm] [mm] [ ˚ ] SFM-090SS 0.02 ±0.6...
  • Page 49 Combination of standard bore diameter ¢ Standard bore diameter d2 [mm] SFM-090SS ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò Standard bore diameter ò ò...
  • Page 50 SFF · SFM MODEL SFM-DS Specification ¢ Max. permissible misalignment Permissible Max. rotation Torsional Radial Moment of Mass Model torque speed stiffness displacement inertia Price Angular Parallel offset Axial displacement misalignment [N·m] [min [N·m/rad] [N/mm] [kg·m [kg] [mm] [mm] [ ˚ ] SFM-090DS 0.30 1 (one side)
  • Page 51 Combination of standard bore diameter ¢ Standard bore diameter d2 [mm] SFM-090DS ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò ò Standard bore diameter ò ò...
  • Page 52 SFF · SFM MODEL Design Check Items Mounting ¢ S FF/S FM m o d e l s a r e f i n i s h e d - a s s e m b l y p r o d u c t s . T h e SFF model SFM model concentricity of the right and left inner diameters of the coupling...
  • Page 53 Dismounting ¢ (1) Confirm if any torque or axial direction load does not act on (3) Remove three pressure bolts loosened in (2) (two bolts for the coupling. Torque may be applied to the coupling when a the sizes 070 and 080 of SFF model) and insert them into the safety break control system is activated.
  • Page 54 SFH MODEL The Largest Model Among SERVO FLEX: Metal Plate Spring Couplings The maximum flange outer diameter is ø 262 mm and the permissible torque is 8000 N·m. The most rigid S type has a torsional stiffness of 10,780,000 N·m/rad at maximum.
  • Page 55 Specially Designed for Realizing High Transmission Torque ò High transmission torque has been realized by thorough analysis using the advanced finite element method and torque transmission using six bolts. ò The floating shaft type is also available with flexible length setting according to customers’ requests. SFH-G type SFH MODEL...
  • Page 56 SFH MODEL High-transmission-torque SFH High-rigidity single element SFH-£S Pilot bore item SFH-£G High-flexibility double element SFH-£G LS=£ Floating shaft length indication +Key/set SFH-£S-£H-£H High-rigidity single element screw processing SFH-£G-£H-£H High-flexibility double element SFH-£G-£H-£H LS=£ Floating shaft length indication Structure and Material ¢...
  • Page 57 Specially Designed for Realizing High Available to Assemble in Parts ¢ ¢ Transmission Torque The product can be delivered in parts, so that this can be used even for designs where parts cannot be mounted on the finished A high transmission torque has been realized by thorough analysis item.
  • Page 58 SFH MODEL SFH-S Specification ¢ Max. permissible misalignment Max. rotation Moment of inertia Mass Torsional Radial Permissible Model speed stiffness displacement Price torque Angular Axial Parallel offset misalignment displacement [min [N·m/rad] [N/mm] [kg·m [kg] [N·m] –1 [mm] [°] [mm] SFH-150S –...
  • Page 59 SFH MODEL SFH-G Specification ¢ Max. permissible misalignment Max. rotation Torsional Moment of inertia Mass Radial Permissible Model speed stiffness displacement Price torque Angular Axial Parallel offset misalignment displacement [min [N·m/rad] [N/mm] [kg·m [kg] [N·m] [mm] [°] [mm] SFH-150G 1 (one side) ±0.8 5900 750000...
  • Page 60 SFH MODEL Standard Bore Pprocessing Specification Dimensions ¢ • Bore processing is available upon request. Products are stored with pilot bores. • Bores are machined based on the following specification. • Assign as described below when ordering. E.g.) SFH-150S-32H-35H • The positions of set screws will not be on the same plane. •...
  • Page 61 SFH MODEL Design Check Items How to evaluate the eigenfrequency of ¢ Selection procedure ¢ feed-screw system (1) Calculate torque Ta applied to the coupling based on the motor output P and coupling operating rotation speed n. (1) Select the coupling according to the normal operating torque and maximum torque of the servo motor/stepping motor.
  • Page 62 (spacer). The SFH-S type can even insert shafts after assembling couplings by installing elements on the flange hub and centering them. Reamer bolt...
  • Page 63 This is an example where a pilot bore-type flange hub is processed for POSI LOCK PSL-K, one of Miki Pulley’s shaft locks, and combined with the standard pilot drilled bore flange hub. ε = tan θ × LG POSI LOCK ε...
  • Page 64 At Miki Pulley, customized products according to customer needs Customize are also developed using a thorough system. Useful products will surely be delivered to customers even if they are not satisfied with the catalog specifications. SFC model SFC model Specification without anodic coating film...
  • Page 65 SFC model SFS-G type Assembly specification This is a special-order specification-assembled SERVO FLEX SFC This is a long spacer specification extending the standard SFS- model with POS LOCK (shaft lock) PSL-K, a timing pulley, and G-type spacer. This specification is for long intervals between shaft.
  • Page 66 Application θ SERVO FLEX SFC model for the 6-axis stage system SERVO FLEX SFC model for the -axis rotation stage θ SERVO FLEX SFC model for the -axis swivel stage SERVO FLEX SFC model for the gantry mechanism SERVO FLEX SFC model for the semiconductor SERVO FLEX SFC model wafer stage X-axis with a semiconductor- wafer-lifting shaft manufacturing machine stepper for the Y-axis...
  • Page 67 SERVO FLEX SFM model for machine tools for the machining center main shaft SERVO FLEX SFF model for machine tools for the feed shaft of the X- and Z-axes on the numeric value control disk SERVO FLEX SFS-G type and SFH-G type for printing machines with line shaft specifi cations...
  • Page 68 ò  W hen death or serious injury may result by Always use a calibrated torque wrench and clamp at the mishandling tightening torque specified by Miki Pulley. CAUTION DANGER ò Do not turn on the power of the equipment.
  • Page 69 D o not use the product in an enviro nment where manual may be changed without prior notice. chemicals may spill, humidity is high, or in hot or cold Contact Miki Pulley for additional information or questions on these temperature. precautions.
  • Page 70 Technical Data Miki Pulley Couplings Standard Bore Processing Specification This standard bore processing specification is applicable to bore ò Nominal Set Screw Diameters for Key Slot processing for SERVO FLEX (except SFC model), SPR FLEX, Key slot Basic dimension b2...
  • Page 71 Technical Data Dimensions and Tolerances of Parallel Keys and Key Slots Cross section Cross section Cross section of shaft of bore of key ò JIS (Excerpts from JIS B 1301-1996) Unit [mm] Key dimension Key slot dimension Nominal Applicable Basic shaft Locking type Normal type...
  • Page 72 Technical Data Permissible Dimensional Deviation of Shafts (Excerpts from JIS B 0401) Unit [μm] Measurement Classification [mm] Beyond Below – 30 – 30 – 20 – 20 – 20 – 10 – 10 – 10 – 4 – 4 + 12 + 16 + 20 + 23...
  • Page 73 Technical Data Permissible Dimensional Deviation of Bores (Excerpts from JIS B 0401) Unit [μm] Measurement Classification [mm] Beyond Below K7 M6 M7 N6 N7 + 32 + 38 + 50 + 18 + 22 + 28 + 12 + 16 + 12 + 18 + 30...
  • Page 74 Technical Data Configuration and Dimension of Hexagon Bolts (Parts grade A) ( Excerpts from JIS B 1180-1985 ) X portion closeup Chamfer the edge. The shaded area It is not necessary indicates the for M4 and below. maximum and k´ minimum range of fillet under head.
  • Page 75 Technical Data Configuration and Dimension of Hexagon Socket Head Cap Screws ( Excerpts from JIS B 1176-1988 ) Chamfer the edge. It is not Rounded or The maximum state of the chamfered head necessary for M4 and below. rad. under the head Cone base Roundness f (Max.) = 1.7r (Max.)
  • Page 76 Technical Data Mechanical Properties of Fasteners Made of Carbon Steel and Alloy Steel ( Excerpts from JIS B 1051-2000 ) ò Mechanical Properties of Strength Category Strength category Mechanical properties 10.9 12.9 d≤16 d>16 Nominal 1,000 1,200 Tensile strength Rm* [N/mm Min.
  • Page 77 ò Mechanical Properties and Maximum Tightening Torque of Hexagon Socket Head Cap Screw (For coarse pitch thread of strength categories of 10.9 and 12.9) Supplementary information (Tf max.) Maximum tightening torque [N·m] Effective Minimum tensile load Yield load Proof load Permissible maximum axial force F [N] Nominal d...
  • Page 78 Technical Data Configuration and Dimension of Hexagon Socket Set Screw ( Excerpts from JIS B 1177-1997 ) About 90° or 120° About 45° 90° or 120° 45° Borer base Borer base Cone base Cone base Incomplete thread Incomplete thread The inlet of hexagon (2P and below) (2P and below) The inlet of hexagon...
  • Page 79 Technical Data Configuration and Dimension of Hexagon Bar Wrench (Spanner) ( Excerpts from JIS B 4648-1994 ) Configuration/Dimension [mm] Mechanical properties Nominal Hardness (Min.)* designation Proof torque* of spanner Rockwell Vickers [N·m] Max. Min. Max. Min. About About About hardness hardness 0.711 0.698...
  • Page 80 Technical Data Supplementary information How to Use Hexagon Socket Set Screws ò Shaft Diameter and Set Screw Size ò Shaft Diameter and Shaft Holding Power The impression of screw tip should clearly appear on the shaft The fixation limit (shaft holding power) of shaft and hub or flange cylinder surface.
  • Page 81 ò Set Screw and Length of Fit ò Accuracy of Fit Between Shaft and Hub or Flange Bore Because of the widespread use of zinc die casting or iron As indicated below, shaft holding power does not decrease sintered alloy as internal thread material, the allowable load of until shaft accuracy of h9.
  • Page 82 Technical Data Torque Wrench ò SFC- £ SA2/DA2 (Clamp bolt) Nominal bolt size Tightening torque [N·m] Torque driver (preset type) Hexagon bit Coupling size 0.4 to 0.5 N6LTDK SB 1.5mm 005,010 M2.5 1.0 to 1.1 N12LTDK SB 2mm 010,020 1.5 to 1.9 N20LTDK SB 2.5mm 3.4 to 4.1...
  • Page 83 ò ALS- £ R/Y/B (Set screw) Nominal set screw size Tightening torque [N·m] Torque driver (preset type) Hexagon bit Coupling size N12LTDK SB 1.5mm – N20LTDK SB 2mm – N50LTDK SB 2.5mm – N100LTDK SB 3mm – Nominal set screw size Tightening torque [N·m] Torque wrench (preset type) Hexagon head...
  • Page 84 Technical Data Physical and Mechanical Property of Metals ò Physical Property Thermal Longitudinal elastic Rigidity Thermal expansion Metal material Ratio modulus ×10 modulus ×10 conductivity ×10 −6 [N/mm [N/mm [W/(M·k)] [1/k] Low-carbon steel (0.08C to 0.12C) 7.86 57 to 60 11.3 to 11.6 7.84 10.7...
  • Page 85 ò Approximate Converted Values of Steels to Rockwell Hardness of C Scale Brinell hardness (HB) Rockwell superficial hardness Tensile 10mm sphere Rockwell hardness Diamond conical penetrator strength Load 3000kgf Rockwell Rockwell Vickers Shore [MPa] C scale C scale A scale (HRA) B scale (HRB) D scale (HRD) hardness...
  • Page 86 Technical Data Balance Quality of Rotation Equipment According to JIS B 0513-1985, balance quality is defined as a 100000 “quantity that shows the balance of a rigid rotor and is a product between a specific unbalance and specified angular velocity.” ò...
  • Page 87 Please Consult Our Website. More information on new products and on events such as tradeshows Multilingual Website (4 languages) Japanese, English, Chinese (simplified characters) and Korean. * Some product information is available in Japanese only. 01 Top page Downloading Latest information including a catalog, instruction manual and CAD data can be downloaded.
  • Page 88 HONG KONG R. R. FISHER & CO., LTD. CENTA MP (SHANGHAI) CO.,LTD. CENTA ANTRIEBE KIRSCHEY GmbH MIKI PULLEY (HONG KONG) CO., LTD. UNIT 23 BLOCK E., CARINGBAHBUSINESS PARK 1-3, D3-1F,NO.479 CHUNDONG ROAD,XINGZHUANG POSTFACH 1125 D-42755 HAAN, GERMANY 5TH FL., CCT TELECOM BLDG., 11WO...
  • Page 89 47 48 50 INDONESIA PORTUGAL SWITZERLAND U.A.E PT. HIMALAYA EVEREST JAYA. RF PORTUGAL - ROLAMENTOS E COMPONENTES, LDA. BAMATEC LTD. AEIN GENERAL TRADING CO. LLC JL. DAAN MOGAT KM. 10 NO:151,PESING POGLAR KEDAUNG RUA DO CASTANHAL, 682 Z.I. MAIA - FABRIKSTRASSE POSTFACH CH 8734 DEIRA,DUBAI, P.O.BOX 171349, U.A.E KALI ANGKE-CENGKARENG, JAKARTA BARAT 11710, INDONESIA...
  • Page 90 461 Imai-Minami-cho, Nakahara-Ku, Kawasaki-City, Kanagawa, Japan '09.06-0-SO-COUP2(e)-001A...