Servoflex SFC

Servoflex SFC
1 / 12 PagesView full catalog

Servoflex SFC

Product catalog summary
Overview: The document provides comprehensive information on SERVOFLEX metal disc couplings, which are 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 couplings come in various models, each with distinct features. The SFC model focuses on high stiffness and low inertia, while the SFF and SFS models offer flexibility and adaptability. They are constructed from high-strength aluminum alloy and SUS304 metal discs, with surface treatments for enhanced durability.
Product Features: Key features include ultra-high stiffness, ultra-low inertia, high response speed, and a wide range of customization options. The couplings are designed for easy and reliable connection, utilizing a single clamping method that reduces mounting time and ensures high concentricity.
Applications: These couplings are suitable for various applications, including NC lathes, machining centers, chip mounters, and actuators. They support high-speed rotation and precise control, with models capable of large torque transmission and high torsional stiffness.
Customization Options: Customization options include adding a slit plate for position detection sensors or using a long spacer for extended shaft distances. Custom assemblies with additional components like timing pulleys and shaft locks are also available.
Conclusion: SERVOFLEX metal disc couplings offer a versatile and high-performance solution for precision machinery, combining high stiffness, low inertia, and customizable options to meet specific industrial needs.
Technical Specifications: The couplings are designed to withstand high torsional loads, confirmed by durability tests showing endurance of 10 million cycles without significant deterioration. They are entirely metal, ensuring slow aging and high precision torque transmission over time.
Torque Transmission: The clamping method for shaft connection is tested with a sufficient safety factor to prevent slippage at rated torque levels. A keyway milling option is available for enhanced connection security.
Noise and Vibration Control: Noise and vibrations can be minimized by adjusting the resonant filter of servo motors or altering the rotation speed for stepper motors. STEPFLEX couplings with high damping ability are recommended for further vibration suppression.
Mounting and Handling: Proper mounting involves ensuring coupling clamping bolts are loosened, and surfaces are free from rust, dust, and oil. Care must be taken to avoid excessive force during insertion and to maintain concentricity. Specific steps for mounting and removal emphasize alternating bolt tightening to achieve the correct torque.
Precautions: The couplings are designed for temperatures between -30°C and 120°C and are resistant to water and oil, though excessive exposure should be avoided. The thin stainless steel metal disc requires careful handling to prevent injury and damage.
Technical Data: Detailed tables provide information on rated torque, misalignment tolerances, maximum rotation speeds, torsional and radial stiffness, moment of inertia, and mass for various models. Standard bore diameter combinations and dimensions for both single and double element types are included.
Specifications and Models: Various models of couplings are outlined, specifying their dimensions and element shapes. Models such as SFF-040SS/DS-8N and SFF-090SS/DS-300N are listed with their respective sizes and element shapes, which can be either square or hexagonal. Hexagonal elements offer higher torsional stiffness but less flexibility compared to square elements.
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 bolts to prevent initial loosening.
Selection Procedures: The document details how to select a coupling based on torque requirements, involving calculating the applied torque (Ta) using the driver's output capacity and rotation speed, and ensuring the rated coupling torque (Tn) exceeds the corrected torque (Td).
Natural Frequency and Servo Motor Oscillation: Guidance is given on determining the natural frequency of a feed screw system, which involves the torsional stiffness of the coupling and feed screw, and the moments of inertia of the driving and driven sides. If the natural frequency is 400 to 500 Hz or less, servo motor oscillation may occur, necessitating adjustments to the system's torsional stiffness and inertia.
Recommendations and Contact Information: For systems experiencing extreme vibrations or servo motor oscillation, it is advised to contact Miki Pulley for assistance. The document also provides a table for load properties and usage factors to adjust torque calculations.
See more

Catalog excerpts

Servoflex SFC-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

 Open the catalog to page 1
Servoflex SFC-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...

 Open the catalog to page 2
Servoflex SFC-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,...

 Open the catalog to page 3
Servoflex SFC-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...

 Open the catalog to page 4
Servoflex SFC-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....

 Open the catalog to page 5
Servoflex SFC-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...

 Open the catalog to page 6
Servoflex SFC-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.

 Open the catalog to page 7
Servoflex SFC-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

 Open the catalog to page 8
Servoflex SFC-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?'

 Open the catalog to page 9
Servoflex SFC-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

 Open the catalog to page 10
Servoflex SFC-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...

 Open the catalog to page 11

All VMA Antriebstechnik GmbH catalogs and technical brochures

  1. Servoflex SFF

    12  Pages

  2. SIK N- series

    4  Pages

*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.