Servoflex SFF

Servoflex SFF
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Servoflex SFF

Product catalog summary
Overview: The document provides comprehensive information on the SERVOFLEX series of Metal Disc Couplings, designed for high-speed and high-precision applications in servomotors. These couplings are characterized by high stiffness, low inertia, and no backlash, making them ideal for industrial applications such as machine tools, semiconductor manufacturing, and printing presses.
Specifications: The SERVOFLEX couplings come in various models, including SFC, SFF(-N), SFS, SFF, SFM, and SFH, each with distinct stiffness, inertia, and torque capabilities. They are constructed from high-strength aluminum alloy and SUS304 metal discs, with surface treatments like alumite and black coating for enhanced durability.
Features: Key features include ultra-high stiffness, ultra-low inertia, high response speed, and easy mounting. The couplings are backlash-free and comply with RoHS standards. They offer customization options such as tapered shafts and special order lengths.
Applications: These couplings are suitable for NC lathes, machining centers, chip mounters, actuators, and semiconductor manufacturing equipment. They support high-speed and high-torque applications, with some models capable of handling up to 8000 N·m of torque.
Customization: Customization options include mounting slit plates for position detection sensors and using long spacers for extended shaft distances. Custom assemblies can incorporate components like shaft locks and timing pulleys.
Durability and Torque Transmission: The couplings are designed to withstand high torsional loads, enduring 10 million cycles without significant deterioration. The clamping method ensures secure shaft connection, with a keyway milling option for enhanced security.
Noise and Vibration Management: Noise and vibrations can be managed by adjusting the resonant filter of servo motors or altering the rotation speed for stepper motors. STEPFLEX couplings are recommended for further vibration suppression.
Mounting and Handling: Couplings should be handled carefully to avoid damage. They are pre-assembled with high accuracy for concentricity. The operating temperature range is -30°C to 120°C, and they are designed to be waterproof and oilproof, though excessive exposure should be avoided.
Installation and Removal: Proper installation involves ensuring no torque or axial load during removal, and clamping bolts should be alternately tightened to the specified torque using a calibrated wrench. Detailed instructions are provided for mounting and removing the couplings.
Technical Data: The document includes tables detailing specifications of various SERVOFLEX models, including rated torque, misalignment tolerances, maximum rotation speed, torsional and radial stiffness, moment of inertia, and mass. It also provides standard bore diameter combinations and dimensions for different coupling sizes.
Specifications and Models: Various models are outlined, specifying dimensions and element shapes. Models like SFF-040SS/DS-8N and SFF-090SS/DS-300N are listed with their respective dimensions and element shapes, which can be square or hexagonal.
Installation and Adjustment Procedures: Instructions are provided for adjusting runout and tightening clamping bolts to the appropriate torque. It is recommended to operate the system for a period and then retighten the bolts to prevent initial loosening.
Selection Procedures: The selection of couplings involves calculating the torque applied using the driver's output capacity and rotation speed. Formulas are provided for determining the natural frequency of a feed screw system.
Considerations for Feed Screw Systems: Attention is given to servo motor oscillation, which can occur if the torsional natural frequency is 400 to 500 Hz or less. Adjustments to torsional stiffness and system characteristics are necessary to resolve oscillation issues.
Torque and Load Calculations: Guidelines are provided for determining the corrected torque applied to the coupling, ensuring it is higher than the rated coupling torque. A table for usage factors based on load properties is included.
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Catalog excerpts

Servoflex SFF-1

Metal Disc Couplings Metal Disc Couplings SERVOFLEX Ultra-high stiffness Low inertia High response No backlash Applications Machine tool, semiconductor manufacturing equipment, actuator, chip mounter, printing press, packing machine High-stiffness and Low-inertia Servomotor Couplings Metal disc couplings developed for high-speed and high-precision positioning and ultra-precise control of servomotors, etc. While achieving high stiffness, high torque, low inertia, and high response speed, these couplings are also flexible in the torsional direction, in the uneven directions, and in the shaft direction, and are totally free from backlash. Models with various characteristics are available, and each model has a single element type that emphasizes stiffness and a double element type that emphasizes flexibil

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Servoflex SFF-2

ELECTROMAGNETIC CLUTCHES & BRAKES SPEED CHANGERS & REDUCERS Compact (medium and small capacity) SFC y P.036 LINEAR SHAFT DRIVES TORQUE LIMITERS Feed shaft SFF(-N)/SFF » P.046 P.064 Metal Disc Couplings SERVOFLEX High-rigidity Couplings SERVORIGID High torque SFH Metal Slit Couplings HELI-CAL Metal Coil Spring Couplings BAUMANNFLEX Pin Bushing Couplings PARAFLEX I Model Selection Link Couplings SCHMIDT Dual Rubber Couplings STEPFLEX Jaw Couplings MIKI PULLEY STARFLEX Model type Plastic Bellows Couplings BELLOWFLEX Rubber and Plastic Couplings CENTAFLEX O Steel -30-120 MODELS SFC SFF(-N) SFS SFF...

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Servoflex SFF-3

Metal Disc Couplings Product Lineup Ultra-low inertia High response Easy to remove Wide range No backlash of options ■ Simple and Reliable Connection Small- and medium-capacity model, which is made of a high-strength aluminum alloy and whose outer hub diameter is linked to the shaft diameter to achieve a ultra-low inertia ideal for high-speed rotation. Three different shapes are available depending on the combination of bore diameters you use. TYPE B ■ High Stiffness and Ultra-low Inertia Max. rated torque Bore ranges Applications: NC lathe, machining center, chip mounter, actuator, SCARA robot,...

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Servoflex SFF-4

Ultra-low inertia High torque Highly accurate No backlash mounting This model has an extremely high torsional stiffness and Bore ranges Spacer material: S45C or an equivalent Surface finishing: Black coating applied has achieved a high rated torque of up to 1.5 times of that Clamping hub material: S45C or an equivalent Surface finishing: Black coating applied of our previous models, as well as an ultra-low inertia. ■ High-precision Clamping Connection substantially. You can remarkably reduce mounting time. Element material: SUS304 metal disc Collar: S45C or an equivalent Element material: SUS304...

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Servoflex SFF-5

Metal Disc Couplings Customization Cases ■ SFC Model with slit plate A slit plate for a position detection sensor can be mounted A slit plate is mounted between the hubs to allow it to be used with position detection sensors such as an encoder and photo sensor. ■ SFC Model with long spacer This is a specification for when the mounting distance This is a custom order specification for an assembly of the between shafts is long. It can be used in applications such SFC model, POSI-LOCK (shaft lock) PSL-K, timing pulley, and as synchronization of gantry mechanism. For details, please visit our website....

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Servoflex SFF-6

Q1 What are the durability and aging deterioration of the SERVOFLEX? s We conduct a torsional durability test by applying a load larger than the rated torque. SERVOFLEX passed the test by withstanding the metal fatigue limit of 10 million cycles of repeated load. SERVOFLEX is all made of metal materials so the deterioration is extremely slow, and it is able to transmit torque with high precision for a long period of time. Initial static stiffness ELECTROMAGNETIC CLUTCHES & BRAKES SPEED CHANGERS & REDUCERS LINEAR SHAFT DRIVES TORQUE LIMITERS Torsional characteristics of the SERVOFLEX before and...

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Servoflex SFF-7

Metal Disc Couplings SERVOFLEX COUPLINGS SFF SS(-N) Types Single Element Type Specifications Model Torsional stiffness [N-m/rad] * Max. rotation speed does not take into account dynamic balance. * Torsional stiffness values given are calculated for the element alone. * The moment of inertia and mass are measured for the maximum bore diameter. * The nominal diameter for the clamping bolt M1 is equal 30-32 35-38-40-42 to the quantity minus the nominal diameter of the screw threads, where the quantity is for a hub on one side.

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Servoflex SFF-8

Standard Bore Diameter Combinations Model Standard bore diameter d1 [mm] 8 TORQUE LIMITERS SERIES Metal Disc Couplings Metal Slit Couplings High-rigidity Couplings Metal Couplings Link Couplings Dual Rubber Couplings STEPFLEX Rubber and Plastic Couplings MIKI PULLEY STARFLEX Jaw Couplings SPRFLEX Plastic Bellows Couplings BELLOWFLEX Rubber and Plastic Couplings HELI-CAL Metal Coil Spring Couplings Pin Bushing Couplings

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Servoflex SFF-9

Metal Disc Couplings SERVOFLEX COUPLINGS SFF DS(-N) Types Double Element Type * The nominal diameter for the clamping bolt M1 is equal to the quantity minus the nominal diameter of the screw threads, where the quantity is for a hub on one side. D: Double element Material - Bore dia. d (Small dia.) Affixing -method B: Clamp Nominal rated torque (Refer to the specifications) Countershaft tolerance Blank: h7, K: k6, M: m6, J: j6, S: 35+0?'

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Servoflex SFF-10

Standard Bore Diameter Combinations Model Standard bore diameter d1 [mm] 8 TORQUE LIMITERS SERIES Metal Disc Couplings Metal Slit Couplings High-rigidity Couplings Metal Couplings Link Couplings Dual Rubber Couplings STEPFLEX Rubber and Plastic Couplings MIKI PULLEY STARFLEX Jaw Couplings SPRFLEX Plastic Bellows Couplings BELLOWFLEX Rubber and Plastic Couplings HELI-CAL Metal Coil Spring Couplings Pin Bushing Couplings

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Servoflex SFF-11

Metal Disc Couplings SERVOFLEX SFF(-N) ModelsItems Checked for Design Pur ses I Precautions for Handling SFF(-N) models come pre-assembled. Couplings are assembled at high accuracy using a special mounting jig to ensure accurate concentricity of left and right internal diameters. Take extra precautions when handling couplings, should strong shocks be given on couplings, it may affect mounting accuracy and cause the parts to break during use. do not subject them to excessive amounts of water and oil as it may cause part deterioration. (2) Handle the element with care as it is made of a thin stainless...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.