PRODUCT CATALOGUE servo couplings

Drive Technology The company JAKOB JAKOB Antriebstechnik GmbH is an internationally leading manufacturer of servo couplings, safety couplings, and mechanical clamping elements. For more than 55 years JAKOB has been developing and producing various types of torsionally stiff metal bellows couplings and safety couplings for the servo drive industry. Throughout our history we have earned ourselves a reputation of being a reliable and competent partner in the motion and drive industry. JAKOB is the market leader in the area of mechanical tool and component clamping with its innovative and unique...

Drive Technology Servo Couplings I Contents Metal Bellows Couplings KM • 6-corrugation bellows • simple installation with EASY-clamping hub • cost-effective standard series • up to 200°C KP • 4-corrugation bellows • simple installation with EASY-clamping hub • short design • high torsional stiffness • up to 200°C • straight bellows • simple installation with EASY-clamping hub KR • low restoring forces • high torsional stiffness • up to 200°C KPH KMH KRH • simple installation • split-hub design • flexible • variable length • backlash-free • torsionally stiff • up to 200°C KPP • plug-in design...

Drive Technology Servo Couplings I Contents KE • with flange hub on both sides for variable attachment / 2 - 4 - 6 corrugated metal bellows Elastomerkupplungen EKM • plug-in • backlash-free • oscillation dampening • different shore hardnesses • with lateral clamping hub EKM-VA • plug-in • backlash-free • stainless steel design • oscillation dampening • with lateral clamping hub • simple installation due to split-hub design EKH • plug-in • backlash-free • stainless • with conical hub on both sides ESM-A • rotational symmetry • high-speed EKS • expansion cone hub - radial clamping hub Miniaturkupplungen...

Distance couplings WD/WDS • variable length between 0.2 and 6 m • simple installation • split-hub design • high-speed • simple installation • split-hub design • high-speed and torsional stiffness EKHZ • variable length up to 3 m • stainless • plug-in • backlash-free • oscillation dampening WD-VA • stainless steel version up to 350°C • split-hub design SF • no additional intermediate storage • split-hub design

Servo couplings are compensating couplings with a backlash free and conformal torque transfer providing high torsional stiffness and a low moment of inertia. According to these requirements, JAKOB metal bellows couplings can be regarded as the ideal solution. For more than 40 years, they have proven themselves in numerous servo drives as an excellent choice. Elastomer couplings with a flexible polyurethane spider can also represent a perfect alternative for different applications because of their product-specific advantages. All JAKOB servo couplings are backlash-free and flexible to allow for...

Drive Technology Couplings I Dimensioning Technical Information - Definitions / Details: Nominal torque of the coupling: TN - [Nm] The nominal torque of the coupling defines the max. load of the prolonged alternating-stress strength. If in normal operation, TN is not exceeded, an infinite number of operation cycles can be carried out (see d „durability“). The values for the moment of inertia are defined for medium hub-bores in the given diameter range Dmin/Dmax. Conversion: [kgcm2] = [10-4kgm2] Torsional stiffness: CTK - [Nm/arc min] The values for the specific torsional stiffness of all couplings...

Drive Technology Couplings I Dimensioning c) according to shaft diameter: After selecting the coupling type, it must be checked whether the requested shaft diameter corresponds with the allowed diameter (Dmin / Dmax) of the hub bores. Another coupling type or size must be chosen, if the shaft diameter is overdimensioned in relation to the torque, which means it is larger than Dmax of the hub. note: hub bores which are smaller than “Dmin” are possible, but an optimal transfer of the nominal torque cannot be guaranteed in this case, so a reduction of the drive torque is necessary. d) durability:...

Drive Technology Couplings I Installation Instructions Alignment of shafts: Axial and angle misalignment are usually without problems and also simple to measure. To obtain the lateral misalignment, it is recommended to proceed as follows: Fit a dial gauge with an appropriate holding device on one shaft end or on one hub of the coupling and bring the feeler onto the second shaft end or onto the second coupling half (sketch). Now the shafts are turned with the dial gauge and the deflection is read. One half of the total deflection is the lateral misalignment. The admissible value for the shaft...

1. Stainless Steel Bellows advantages: • absolutely backlash-free, precise torque transmission • extremely high torsional stiffness • high flexibility for compensation of shaft misalignments • minimized moment of inertia • high-quality precision manufacture • system modules with a multitude of different bellows variations • maximized JAKOB-KNOW-HOW of the specific bellows dimensioning • JAKOB developed and patented the brass-wire press-fit method in 1974, which is the optimal, backlash-free connection of aluminum hubs with multi-layered stainless steel bellows. Alternatively, the steel or stainless...

cylinder hex socket screw ISO 4762 / 12.9 zinc flake coating 4. Lateral Clamping Hub advantages: • clamping hub made from high-tensile aluminum • simple lateral fitting of shaft-hub-connection • ensures the backlash-free, force-fitted transfer of the declared nominal torque value (no keyway necessary) • minimized moment of inertia, low mass, stainless design • short delivery time due to modulary system • hub bores (D1/D2 standard tolerance G6); customization possible • keyway possible on request • revolution of coupling fitting • no shortening or extension of bellows • grave time saving, no reworking...