Concentrated energyTM

Always striving to innovate • Hightech expertise • An extensive range of spring washers INSPECTION AND SHIPPING A fully equipped inspection laboratory • The importance of packaging DESIGN AND  ENGINEERING WAVED SPRING WASHERS From analysis of your requirements... to custom production... • The experience and expertise of an in-house engineering department From ball bearing pre-stress to custom applications • Use a minimal volume to store and restitute maximal energy SPRING MATERIALS An extensive range of spring materials, usable from -270°C to +1000°C. ONDUFILTM SPRING WASHERS Simultaneously waved...

INTRODUCTION ALWAYS STRIVING TO INNOVATE orrelly has specialised in designing and producing spring washers since the early 1970s. Dominique Borrelly took the reins of the company in 1990 and has continued its growth through a policy of continual innovation. Numerous investments in human and technical resources ensure that the company’s products are at the leading edge of technology. national and international development, and has set up appropriate facilities to attain its objectives: • everal functional production units S suited to innovative manufacturing techniques. • n inspection laboratory...

FROM ANALYSIS OF YOUR REQUIREMENTS... esigning a spring washer requires thorough knowledge of the product, acquired through years of experience. Our in-house engineering department builds on this experience through its familiarity with high-performance computational software. In terms of energy stored per unit volume of material, spring washers are among the most efficient types of spring. We work with you to consider your needs and draw up requirement specifications in order to determine the most technically and economically suitable solution. works with you to determine the spring washer that...

GENERAL CHARACTERISTICS OF THE MATERIALS USED The first phase in designing a spring washer entails determining the material that best meets the stipulated requirement specifications. Usual description Standard AFNOR symbol Young’s modulus E (at 20°C). GPA dynamic method Elastic limit Service Resistance temperature to corrosive Mpa (°C) substances Fatigue resistance Very poor Very poor Lightly alloyed steel 45Si Cr Mo 6 Very poor Very high Very high Very high Very high Very high Very high Very high Very high Austenitic stainless steels 1.4310 1,500 X10 Cr Ni 18-8 NF EN 10-088 Aisi 301 18,000 hardened)...

This table is not intended to be exhaustive. It lists the materials regularly used which have a favourable ratio of elastic limit to longitudinal modulus of elasticity for relatively high elastic deformations. Electrical Usual description Magnetic or thermal AFNOR symbol permeability conductivity Chromium-molybdenum steel 51CrV4 Very good Low Lightly alloyed steel 45Si Cr Mo 6 Very good Low Austenitic stainless steels Waved spring washers, Belleville washers, diaphragm spring washers, OndufilTM, spring rings, located Low due to work hardening in a non-waterproof housing and subject to even lightly...

From dimensional inspection materials resistance and static or dynamic loading tests, our laboratory is fully equipped to check that all products we supply comply with their equipment is traceable to national metrological standards and is regularly Total traceability is guaranteed and records can be archived indefinitely. Batch numbers are linked to full manufacturing details: materials, all production phases, intermediate inspections, final inspection Shipping your parts is of the Because appearance does indeed count, we use resistant, correctly labelled, easy to handle and secure packaging...

WAVED spring washers

WAVED SPRING WASHERS GENERAL: BALL BEARING NOISE Non pre-stressed ball bearing Pre-stressed ball bearing Internal clearance in ball bearings is essential but generates noise and vibrations. Using spring washers to take up internal clearance reduces vibrations considerably and also decreases bearing noise. This has a beneficial effect on bearing service life. Examples of bearing applications Electric motor Tighter clearance, controlled force

PRACTICAL EXAMPLES  • Problem to be solved: Handle pre-stress in a high speed turbine. • Constraints: Cryogenic operating temperatures, particularly small overall dimensions, very tight load tolerance, zero hysteresis. • Solution: Beryllium copper waved spring washers. • Borrelly added value: Characterisation of the design parameters and parameters for manufacturing at 20°C, to achieve a result that fully met the customer’s requirements at 50 K, right from the first prototype. Civil aeronautics • Problem to be solved: Guarantee locking of a multi-pin connector ring. • Constraints: Very small...

CN STANDARD XC 75 AND STAINLESS STEEL WAVED SPRING WASHERS Available from stock The values in the tables are not binding. Data is provided for information only and subject to change without notice. Borrelly references* Standard references for the bearing Material Bore dia. thickness Flat dia. (mm) (mm) (mm) e L OD A ID B Approx. Free dia. (mm) Mean Working height free ht. Load (daN) stiffness (mm) (approximate) (mm) Ho OD A ID B H1 H2 P(H1) P(H2) (daN/mm) ©BorrellyTM - Not legally binding, data provided for information only and subject to change

C3 XC 75 AND STAINLESS STEEL WAVED SPRING WASHERS Available from stock The values in the tables are not binding. Data is provided for information only and subject to change without notice. Standard references for the bearing Approx. Free dia. (mm) free ht. (approximate) (mm) Ho OD A ID B Working Load Mean height (daN) stiffness (mm) P (H)=±10% (daN/mm) * For a stainless steel washer, replace the characters “XT” by “IX” at the end of a reference. ©BorrellyTM - Not legally binding, data provided for information only and subject to change Borrelly references*

OE SPECIAL WAVED SPRING WASHERS WITH EXISTING TOOLS These tables are not restrictive. They are provided to avoid unnecessary expensive tooling costs. Unlike our standard range, we do not keep these washers in stock. They can however be manufactured on request with very short lead times. The values in the tables are not binding. Data is provided for information only and subject to change without notice. Approx. free height Approx. flat force Drcm nnnononvT Drcm Qnnonomv Drcm ^nnnnociv DDcnoQm cncniv