FINE CYCLO E CYCLO Zero Backlash Precision Gearboxes

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Fine Cyclo Fine Cyclo series Table of contents Fine Cyclo ECY series Operating principle - Series A, DA, and C Operating principle Series UA and T Operating principle of Series ECY Speed ratio and rotation direction - Series A, D, DA, and C Speed ratio and direction of rotation Series T and UA Speed ratio and rotation direction - Series ECY Features and advantages Application Examples Reduction ratio and acceleration torque Max. bending moment on the output flange Max. hollow shaft diameter Reduction ratio and outer diameter Torques and speeds Flow chart and equation of selection 4 Description...

Fine Cyclo Introduction 1 The Fine Cyclo reducer Construction A-Series FC-A Construction DA-Series Cycloid disc Eccentric input shaft Input shaft bearing Main Bearings Ring gear (housing) Oil seal

Fine Cyclo Introduction Construction C-Series Construction UA-Series Construction T-Series Cycloid disc Main bearing(cross roller bearing) Eccentric input shaft Input shaft bearing Main Bearings Ring gear (housing) Oil seal output side Output flange Output shaft planetary gears input shaft with spur gear Construction ECY-Series Ring gear housing Output ring gear housing Cycloid spline Eccentric bearing Eccentric input shaft Input shaft

Fine Cyclo Introduction 1.1 Operating principle - Series A, DA, and C The gearbox of the Fine Cyclo series is fundamentally different in principle and mechanism from the helical gearing mechanism of competitors' gear motors. The unique reduction gearbox is an ingenious combination of the following two mechanisms: • A planetary gear and a fixed internal sun gear (hollow gear). On the Fine Cyclo the planetary gear has cycloidal cam motion (cycloid disc) and the fixed sun gear has a circular arrangement of ring gear pins. The fixed sun gear has one or two "teeth" more than the "planetary gear" (cycloid...

Fine Cyclo Introduction 1.2 Operating principle Series UA and T The Series UA and T gearboxes are double-stage and differ from the single-stage series by having 3 eccentric discs (cycloid disc), driven by the input shaft with spur teeth. The cycloid discs are driven via 3 eccentric shafts and not directly by one eccentric input shaft. The pins and the eccentric shafts in the output shaft are evenly spaced on a circle, which is concentric with the axis of the sun gear. The pins transmit the rotation of the planetary gear by rolling internally around the circumference of the bores of each planetary...

Fine Cyclo Introduction 1.3 Operating principle of Series ECY Every ECY series model always comprises four components. • he eccentric bearing deforms the planetary gear into an elliptical shape. T • he main axis of the cycloid spline, which now has an elliptical shape, engages with the ring gear housing and the output T ring gear housing. • f the housing containing the internal gear is actually stationary and the eccentric bearing rotates clockwise, the cycloid I spline rotates anti-clockwise by exactly the difference in the number of teeth and is elastically deformed in the process. • his rotation...

Fine Cyclo Introduction 1.4 Speed ratio and rotation direction - Series A, D, DA, and C Output shaft Ring gear housing Input shaft Gear reduction Input: Input shaft Output: Output shaft Fixed: Ring gear housing n = –1/i Gear reduction Input: Input shaft Output: Ring gear housing Fixed: Output shaft n = 1/(i+1) Gear reduction Input: Output shaft Output: Ring gear housing Fixed: Input shaft n = i/(i+1) 4 When all elements rotate at the same time, the speed ratio consists of a combination of the representations to . n = Speed ratio = (output speed/input speed) ("–" indicates the possible opposite...

Fine Cyclo Introduction 1.6 Speed ratio and rotation direction - Series ECY The speed ratio and rotation direction depend on the positions of the input, output and stationary element, as shown in the illustrations below. Output shaft Gear housing Input shaft Gear reduction Input: Input shaft Output: Output shaft Fixed: Gear housing n = –1/i Gear reduction Input: Output shaft Output: Input shaft Fixed: Gear housing n = –i Gear reduction Input: Gear housing Output: Input shaft Fixed: Output shaft n =i+1 When all elements rotate at the same time, the speed ratio consists of a combination of the...

Fine Cyclo Introduction 1.7 Features and advantages Compact design The right size for every application The high reduction ratios, in one or a maximum of two stages, allow for extremely compact designs with a long lifetime. Moreover, due to the different versions available, these gearboxes can be optimally integrated into the machine environment. The wide range of gearbox series and the many size gradations within each series enable selection of the right gearbox for any precision application. Simple installation The Series A, DA and C gearboxes are lubricated for life in the factory and completely...

Fine Cyclo Introduction 2 Nomenclature 2.1 Fine Cyclo F Reduction ratio Standard version: Special version: Shape of ring gear housing: Cylindrical – Flange F Symbol for Cyclo Bearing: without output side bearing: integrated cross roller bearing: integrated tapered roller bearing: tapered roller bearings and output shaft: integrated angular ball bearings: Reduction ratio 50, 80, 100 Auxiliary device type Size 103, 105, 107 Standard version: Special version: Symbol for series Symbol for E Cyclo

Fine Cyclo Introduction 3 Gearbox selection 3.1 Reduction ratio and acceleration torque 14000 3.2 Max. bending moment on the output flange A-Serie UA-Serie T-Serie C-Serie DA-Serie ECY-Serie 3.3 Max. hollow shaft diameter ø19 ø21 Fine Cyclo