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product overview plastic ball bearings & components PLASTICS TECHNOLOGY

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product overview plastic ball bearins & components PLASTICS TECHNOLOGY plastics technoloy INNOVATIVE SOLUTIONS MADE OF PLASTICS Characteristics and advantaes of plastic ball bearins: Flexibility in desin
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product overview plastic ball bearins & components PLASTICS TECHNOLOGY plastics technoloy INNOVATIVE SOLUTIONS MADE OF PLASTICS Characteristics and advantaes of plastic ball bearins: Flexibility in desin for the best possible production interation No lubrication, maintenance-free Outstandin runnin characteristic due to free material selection Very low (up to 80 % less than steel) Electrically isolatin Resistant to acid and lye Temperature resistance of up to above 200 C Under the brand of SMG, Schmein offers a wide-ranin assortment of technically sophisticated and hih-quality parts and components made of plastics. From the plannin stae throuh the production of prototypes to serial production the customer is supported in an interated manner. The combination of construction, cuttin manufacturin, tool makin and injection mouldin results in products with optimally adapted details. In this scope SMG stands for a variety of standard products, such as radial and thrust ball bearins as well as ball transfer units on the one hand. On the other hand SMG also offers services in the field of plastic processin, which include the customer-desined production of turned, milled and injection moulded parts. This often opens out into customised developments which help overcomin challenes whilst producin cost reductions especially in the case of special applications. For example plastic ball-bearins made of PEEK, S or PI with balls made of lass or stainless steel for the usae in the hihtemperature rane. These do not require any lubrication and are suitable even in a hih-humidity atmosphere and under steam. PAGE 2 plastics technoloy QUALITY IS OUR DEMAND DIN EN ISO 9001:2000 certified Our products are tested for quality and lifetime on our own test machines. The complex cleanin process and the strict quality control ensure that SMG ball bearins are used worldwide in the food and pharmaceutical industry, amonst others. CLEANING PROCESS No matter if available product or service ordered: Latest testin and measurin machines as well as an own laboratory for the material control lay the ideal foundations. SMG and SCHMEING are members of the Groz-Beckert Group. Groz-Beckert is the leadin manufacturer of needles and precision components for the manufacturin of textile fabrics employin approx. 8,000 people worldwide. The SMG-team offers a broad advisory service on material selection, conception, construction, tool manufacture and production. Our in-house mould-construction translates the CAD-parameters into the tool usin latest CNC turnin and millin machines. The German production site is a hih quality feature for SMG. CNC-TURNING MACHINE INJECTION MOULDING MACHINE PAGE 3 plastics technoloy SOLVING PROBLEMS AND COST-CUTTING Examples for applications: Conveyin systems, apparatus enineerin, air conditionin, electroplatin, food processin, vacuum applications, fibre processin, conveyor ovens, textile finishin, medical radiation (sterilization), photo processin, computer assembly, Deep roove plastic ball bearins Sinle row and double row plastic ball bearins and uide rollers Special ball bearins Application: Specially desined to be used as pulleys for flat and round belts in the production of computer motherboards. Application: These ball bearins and uide rollers are desined to serve as pulleys improvin side uidance in conveyor technique. Application: Special rollin bearins for special applications interated into the product as complete structural component or as ball bearin with toothed wheel. Desined for the use in the transport technoloy. Advantaes: Simplified construction of the installation and outstandin chemical resistance when usin special materials resultin in cost reduction. Advantaes: Suitable for use in food and permitted for use in the food-processin sector (FDA) even in the hih-temperature rane of up to 250 C usin special materials. They do not require any lubrication even at hih humidity or under steam. Advantaes: Possibility of customizin results in cost savin. PAGE 4 plastics technoloy SPECIAL THRUST BALL BEARING WITH STAINLESS STEEL ROLLERS AND PEEK-HOUSING. RADIOLUCENT, RESISTANT TO RADIATION, HIGH CHEMICAL AND TEMPERATURE RESISTANCE. Standard steel ball bearins with plasticcovered outer rin Deep roove ball bearins with Z-shields, insert bearins, etc. Linear uides made of plastics Application: Used as rope pulleys or deflection rollers inside diital printers and lare-scale copiers. Application: Used for patient transportation trolleys with bearins made of PEEK, radiolucent and resistant to radiation. Application: For use in many sterile application fields such as the food-processin industry. Customized product modification possibilities are available upon request. Advantaes: Offer noise attenuation and are suitable for the transport of sensitive oods. Advantaes: Simplified construction of the installations, suitable for the use in the medical technoloy. FDA approval and biocompatibility available with special materials. Advantaes: The uides are operated without any rease or oil and can thereby be used in a variety of sterile fields in the food processin industry. Low kinetic enery due to the use of plastics. The linear uides are developed to specific orders and are also available in small batch series. PAGE 5 plastics technoloy MATERIAL CHARACTERISTICS * standard materials Races Housin Caes Balls Support balls * * PE PET PEEK PVDF S PI polyoxymethylene polypropylene polyethylene polyethylene terephthalate polyaryl ether kethone polyvinylidene fluoride polyphenylensulfid polyimide PA 6.6* polyamide 6.6 * polypropylene PE polyethylene PET polyethylene terephthalate PEEK polyaryl ether kethone PVDF polyvinylidene fluoride S polyphenylensulfid PI polyimide full component Glass* Borosilicate lass Stainless steel / * Stainless steel / AISI 420 Brass Ceramics SI3N4 Ceramics Al2O3 Ceramics ZrO2 polypropylene PA 6.6 polyamide 6.6 polyethylene PVDF polyvinylidene fluoride PA 6.6* Stainless steel / Ceramics SI3N4 Ceramics Al2O3 Ceramics ZrO2 PVDF polyamide 6.6 polyoxymethylene polypropylene polyvinylidene fluoride ALICATIONS Ball Bearins Races Caes Balls Ball transfer units Housin Support Balls Conveyin systems, apparatus, enineerin, air conditionin Electro platin Food processin Vacuum applications Fiber processin Conveyor ovens Textile finishin Medical radiation Medical radiation (sterilization) Photo processin Computer assembly Automotive application (hih temperature) Automotive application Model and liht construction PVDF S PET S /PET S PA PA PVDF PA S PA PET S PA S PA PA Glass Glass Glass Glass Glass Glass Materials-handlin technoloy Swivel tables Food processin Electroplatin Semiconductor industry Medical enineerin (sterilization) Electrical enineerin Vacuum systems Air conditionin /PVDF /PVDF PEEK PVDF PE / PA / PA Ceramics Ceramics PA PVDF Fi.1 PAGE 6 plastics technoloy MATERIAL CHARACTERISTICS Temperature application area ( C) PA66 PET PEEK PVDF S Dynamic load capacity dependin on speed and operatin temperature The dynamic load capacity depends on the operatin conditions. The chart below ives an estimation of the influences the operatin temperature and the speed have on the dynamic load capacity. PI PE C standard material further materials Fi.2 Example: An application uses a bearin type 6204 with races. From the product chart no. 1 shown on pae 8 you take a dynamic load capacity of 420 N and a maximal operatin speed of 1050 min -1. The operatin temperature is 80 C at an operatin speed of 630 min -1. Thermal expansion (10-5 / K) Reduction of dynamic load capacity Stainless steel Glass PA66 PET PEEK PVDF S PI reduction factor Remark: At an operatin speed of below 25 min -1 the static load capacity is to be considered % Operatin speed C Operatin temperature Fi.4 PE standard material further materials Fi.3 The chart states a reduction factor for the operatin temperature of approx The reduction factor for the speed of 630 min -1 (60 % of the max. speed) shows a factor of approx In our application example the load should not exceed 420 N x 0.90 x N PAGE 7 plastics technoloy SINGLE ROW RADIAL BALL BEARINGS SINGLE AND DOUBLE ROW* Material combinations Material combinations Standard Races Races Cae PA 6.6 Cae Chart 1 TYPE ID OD W capacity stat dyn n max. speed Balls Balls N N rpm lass lass PAGE 8 * Double row ball bearins with ZZ-shields on request. The basic load ratin and speed limits stated herein are basic fiures. Due to different operatin conditions the fiures ained under real-life conditions can vary to a hih extent. Please see the information iven in fi. 4 on pae 7 to partly consider the environmental influences. plastics technoloy BALL BEARINGS INCH DIMENSIONS: SINGLE AND DOUBLE ROW* Material combinations Races Cae PA 6.6 Chart 2 TYPE ID OD W capacity stat dyn n max. speed Balls inch inch inch N N rpm lass R4 ¼ /8 R6 3/8 /8 /32 R8 ½ /8 /4 R10 5/8 /8 /32 R12 3/4 /8 /16 R16 1 ½ * Double row editions of ball bearins listed in charts 1 and 2 on request. * Double row ball bearins with ZZ-shields on request. The basic load ratin and speed limits stated herein are basic fiures. Due to different operatin conditions the fiures ained under real-life conditions can vary to a hih extent. Please see the information in fi. 4 on pae 7 to partly consider the environmental influences. GUIDE ROLLERS AVAILABLE ALSO IN INCH-DIMENSIONS* Material combinations Races Cae PA 6.6 Chart 3 TYPE D B B1 G G1 C C1 capacity stat dyn n max. speed Balls N N rpm KR M KR M KR M KR M10x KR M12x KR M12x KR M16x KR M18x KR M20x * Double row ball bearins with ZZ-shields on request. The basic load ratin and speed limits stated herein are basic fiures. Due to different operatin conditions the fiures ained under real-life conditions can vary to a hih extent. Please see the information iven in fi. 4 on pae 7 to partly consider the environmental influences PAGE 9 plastics technoloy THRUST BALL BEARINGS SMG manufactures thrust ball bearins in nearly all metric and inch dimensions. Also customized editions can be offered. The standard material combination for the races is in full complement execution with alternatin balls out of and. Thrust ball bearins made of any other material listed on pae 6 are available upon request. Material combinations Races Chart 4 TYPE dk DG d Dk H capacity stat dyn n max. speed Balls N N rpm lass * Double row thrust bearins with ZZ-shields on request. The basic load ratin and speed limits stated herein are basic fiures. Due to different operatin conditions the fiures ained under real-life conditions can vary to a hih extent. Please see the information iven in fi. 4 on pae 7 to partly consider the environmental influences. PAGE 10 plastics technoloy OPERATION GUIDELINE Dimensions Assembly instructions (radial ball bearins) The main dimensions of the radial plastic ball bearins are in conformity with the specification of DIN 625-1:1989 and DIN 616:2000 or ISO 15:1989 respectively, except for the distance between the edes. The main dimensions of the plastic thrust bearins, with the exception of the distances between the edes, are in conformance with DIN 616:2000 or ISO 104:2002 respectively. To ensure a proper assembly we recoend a press fit on the ID and a loose fit on the OD (or vice versa). A simultaneous press fit on the ID and OD will result in a preliminary wear of the bearin. For any questions on this matter, please contact SMG. d bearin clearance Bore Radial bearin clearance d [] [μm] more than up to min max The listed tolerances are valid for ball bearins with races made of. Other materials may require different tolerances. These data are standard values for our radial bearins. The bearin clearance can be chaned accordin to customer s order. PAGE 11 plastics technoloy INSERT BEARINGS SINGLE ROW* Material combinations Races Cae PA 6.6 Chart 5 TYPE d D Bi Be m n stat capacity dyn n max. speed Balls N N rpm UC UC UC UC UC UC UC UC UC UC * Double insert bearins with ZZ-shields on request. The basic load ratin and speed levels stated herein are basic fiures. Due to different operatin conditions the fiures ained under real-life conditions can vary to a hih extent. Please see the information iven in fi. 4 on pae 7 to partly consider the environmental influences. All insert bearins fit in the plastic housins listed on pae 13 and in the established cast steel housins. The standard material combination for insert bearins are rins made of, bearins made of stainless steel and caes made of PA. Certainly any other material combination as listed on pae 6 is possible. Special editions are available on request. PAGE 12 plastics technoloy PILLOW BLOCKS AND BOLT FLANGE HOUSINGS MADE OF FIBRE REINFORCED PLASTIC SMG housins are manufactured from extra stron lass fibre reinforced polyamide. Zinc-plated sleeves strenthen the bolt holes by default. Optionally also stainless steel sleeves are available. The dimensions of the housins are in line with coon cast steel housins. They have an exceptional chemical resistance and are noncorrosive and much lihter than steel housins. In addition to the plastic inserts listed on pae 12, our housins also accept many customary steel inserts. Thermoplastic Pillow Blocks TYPE h a e b S1 S2 w PL 200-P PL 201-P PL 202-P PL 203-P PL 204-P PL 205-P PL 206-P PL 207-P PL 208-P Thermoplastic 4 Bolt Flane Housins TYPE a e l s F 200-P F 201-P F 202-P F 203-P F 204-P F 205-P F 206-P F 207-P F 208-P Thermoplastic 2 Bolt Flane Housins TYPE a e l s FL 200-P FL 201-P FL 202-P FL 203-P FL 204-P FL 205-P FL 206-P FL 207-P PAGE 13 plastics technoloy BALL TRANSFER UNITS MADE OF PLASTICS Material combinations Housin (housin balls) Balls Support balls Dimensions () Weiht Basic load ratin TYPE Support balls Ball Ø A max. Ø B heiht of ball D base Ø F flane thickness M bottom flane to top of outer rin L overall heiht C (N) PA ± 0.1 ± 0.2 ± PA ± 0.1 ± 0.2 ± PA ± 0.2 ± 0.3 ± PA ± 0.2 ± 0.4 ± Advantaes of ball transfer units made of plastics in comparison to steel units Advantaes: resistant to acid and lye no lubrication, maintenance-free low friction low (up to 70 % less) appropriate for vacuum or pressure non-conductive saltwater-proof free of metallic components* flexibility in desin for best possible product interation heat resistant up to 250 C (applies to hih performance plastic ) transport of fraile oods such as lass* appropriate for use in explosive atmosphere (acc. to ATEX-uidelines) appropriate for use in aseptic areas (e.. medical technoloy) customized desin possible * dependin on selection of materials Please note: In comparison to steel units, ball transfer units out of plastics are non-conductive and offer a lower load capacity, lower thermal stability (for standard material approx. 90 C) and a hiher thermal expansion coefficient. PAGE 14 plastics technoloy Arranement of the ball transfer units: For articles with a uniform, smooth undersurface the distance between the ball transfer units a is calculated by dividin the smallest ede lenth by 3. Undersurface of the conveyed article = 300 x 800 Distance between the ball transfer units a = 300/3 = 100 Determination of the load for ball transfer units: To determine the load for a ball transfer unit the of the conveyed article is divided by the number of the loaded ball transfer units or at least by 9. Weiht = 500 N Ball transfer unit load (F) F = 500/9 56 N per ball transfer unit Conveyin velocity: Vmax. = 1 m/sec. Temperature C Temperature factor ft Temperature factor: Operatin temperature of up to 30 C. At operatin temperatures of above 30 C, please note the reduction in basic load ratin. The load capacity must be multiplied by the temperature factor. Available with drain outlet on request. PAGE 15 plastics technoloy CYLINDRICAL ROLLER BEARINGS CYLINDRICAL ROLLER BEARINGS ARE AVAILABLE ON REQUEST. Characteristics Due to the usae of cylindrical rollers instead of balls the cylindrical roller bearins are able to accoodate a hiher radial load Shaft expansion in lenth can be compensated by the shiftin of the races (except for the edition NUP). Lubrication free dry operation These ball bearins are made to customer specification Basic types Edition NU: Two interal flanes on the outer rin and no flanes on the inner rin Edition NJ: Two interal flanes on the outer rin and one interal flane on the inner rin Edition NUP: Two interal flanes on the outer rin and two interal flanes on the inner rin. Edition N: Outer rin without flanes and two interal flanes on the inner rin SPHERICAL ROLLER BEARINGS Characteristics Spherical roller bearins contain two rows of rollers and a spherical raceway on the outer rin. Thereby, they are able to absorb misalinments. Lubrication free dry operation These roller bearins are made to customer specification SPHERICAL ROLLER BEARINGS ARE AVAILABLE ON REQUEST. PAGE 16 plastics technoloy SMG SPECIALIST IN PLASTICS In addition to the field of ball bearins, cylindrical bearins and roller bearins, SMG also offers its customers the full premium production spectrum of precision parts made of plastics. SMG s customers benefit from the combination of construction, cuttin and in-plant tool-manufacture and injection mouldin. plastics technoloy VARIABLE PRODUCTION FACILITIES MADE OF PLASTICS Turned parts Production facilities on latest CNC turnin centers equipped with automatic bar stock feed up to a diameter of 72. The maximum collet capacity amounts to 280 available from sinle-piece to lare-scale production. Milled parts SMG has specialized in the manufacture of small parts made of hih performance materials at the hihest deree of accuracy and precision available from sinle-piece to lare-scale production. Moulded parts Our SMG machine outfit includes injection mouldin machines with a clampin force of up to 250 tons. Almost all thermoplastics are processed:, PA,, PMMA, PUR, with or without additives like carbon fiber, lass fiber, raphite, MOS2. Also hih-capacity plastics such as S, PEEK and TPI are used for our moulded parts. PAGE 18 plastics technoloy MATERIALS Thermoplastics PA PE PET S PEEK TPI and many others Special materials Polyimide Carbon Laminated fabrics Duroplaste Hih-performance plastics Composite materials Duroplastics Thermoplastics Synthetic resin fabrics Laminated wood PAGE 19 BALL BEARINGS I GUIDE ROLLERS I BALL TRANSFER UNITS I CUSTOMIZED SOLUTIONS EN Schmein GmbH & Co. KG Ostrin Raesfeld, Germany Phone Fax The depictions provided of our products are not to scale and are intended for illustrative purposes only. Consequently they make no claim to be an accurate representation of the oriinal. = Reistered trademark of the Groz-Beckert company roup. = This publication is copyrihted. All rihts reserved, in particular the riht of duplication, distribution and translation. This publication or any parts thereof may not be reproduced or stored, processed, duplicated or distributed usin electronic systems in any form or by any means whatsoever without the express written consent of Groz-Beckert.
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