Turcon Excluder F, G Scraper DA27

Transcription

1 TRELLEBORG SEALING SOLUTIONS Turcon Excluder F, G Scraper DA27 YOUR PARTNER FOR SEALING TECHNOLOGY

2 Your Partner for Sealing Technology Trelleborg Sealing Solutions is a major international sealing force, uniquely placed to offer dedicated design and development from our market-leading product and material portfolio: a one-stop-shop providing the best in elastomer, thermoplastic, PTFE and composite technologies for applications in aerospace, industrial and automotive industries. Facilities are certified to ISO 9001:2008 and ISO/TS 16949:2009. Trelleborg Sealing Solutions is backed by the experiences and resources of one of the world s foremost experts in polymer technology: the Trelleborg Group. With 50 years of experience, Trelleborg Sealing Solutions engineers support customers with design, prototyping, production, test and installation using state-of-the-art design tools. An international network of over 70 facilities worldwide includes over 20 manufacturing sites, strategically-positioned research and development centers, including materials and development laboratories and locations specializing in design and applications. Developing and formulating materials in-house, we utilize the resource of our material database, including over 2,000 proprietary compounds and a range of unique products. Trelleborg Sealing Solutions fulfills challenging service requirements, supplying standard parts in volume or a single custom-manufactured component, through our integrated logistical support, which effectively delivers over 40,000 sealing products to customers worldwide. ISO 9001:2008 ISO/TS 16949:2009 The information in this brochure is intended to be for general reference purposes only and is not intended to be a specific recommendation for any individual application. The application limits for pressure, temperature, speed and media given are maximum values determined in laboratory conditions. In application, due to the interaction of operating parameters, maximum values may not be achieved. It is vital therefore, that customers satisfy themselves as to the suitability of product and material for each of their individual applications. Any reliance on information is therefore at the user s own risk. In no event will Trelleborg Sealing Solutions be liable for any loss, damage, claim or expense directly or indirectly arising or resulting from the use of any information provided in this brochure. While every effort is made to ensure the accuracy of information contained herewith, Trelleborg Sealing Solutions cannot warrant the accuracy or completeness of information. To obtain the best recommendation for a specific application, please contact your local Trelleborg Sealing Solutions marketing company. This edition supersedes all previous brochures. This brochure or any part of it may not be reproduced without permission. All trademarks are the property of Trelleborg Group. The turquoise color is a registered trademark of Trelleborg Group. 2012, Trelleborg Group. All rights reserved.

3 Scrapers Contents Turcon Excluder F... 3 Installation Recommendation... 9 Turcon Excluder G Installation Recommendation Scraper DA Installation Recommendation

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5 Turcon Excluder F Double Acting Rubber Energized Double-acting Scraper Material: Turcon and Zurcon 3

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7 Turcon Excluder F Turcon Excluder F Description The Turcon Excluder F is a double-acting scraper with two geometrically different scraper lips, which are positioned back-to-back. The scraper is always installed with 2 O-Rings as elastic energizing elements in one groove. The scraper function itself is performed by the Excluder F, Turcon element. The O-Rings maintains the pressure of the scraper lips against the sliding surface and compensates deflections of the piston rod. O-Ring Turcon scraper ring Very good scraping effect even against firmly adhered dirt, etc. Very good sealing effect from the inside against the residual oil film adhering to the surface of the piston rod Identical installation as the Zurcon Excluder 500 and Excluder 5 from WE50 to WE52 Very high resistance to hydraulic media Available for diameters from 19 up to mm (Turcon ), up to mm (Zurcon Z51/Z52) ISO/DIN 6195 Type D installation on recommended dimensions from ø 40 to ø 140 mm. Disadvantages compared to Excluder 2 and 5 Require 2 pcs O-Rings Not completely axially locked in the groove More disposed to wrong installation. Figure 1 Turcon Excluder F Excluder F has two functions: Scrape contaminants from the retracting piston rod and thus to protect the system from soiling Hold back the residual oil film on the extending piston rod on the medium side. Excluder F is preferably used in conjunction with our rod seals Turcon Stepseal 2K or Zurcon Rimseal, i.e. seals with a hydrodynamic back-pumping function. Application wise the Excluder F is placed between Excluder 2 and Excluder 5 for medium to light-heavy duty such as in: Light construction machinery Truck crane Agriculture machines Hydraulic presses Injection moulding machines Hydraulic actuators Advantages In principle the same as for Excluder 2 and 5: Outstanding sliding properties Stick-slip-free, no sticking for Turcon materials Tough scraper particular in Zurcon materials Can compensate for deflections of the piston rod or plunger Advantages compared to Excluder 2 and 5 Easier installation in closed groove Improved radial flexibility Improved sealing function due to O-Ring arrangement. Technical Data Operating conditions: Speed: 15 m/s for Turcon materials 2 m/s for Zurcon Z80 1 m/s for Zurcon Z51/Z52 Temperature: Media: -45 C to +200 C for Turcon materials -60 C to +80 C for Zurcon Z80-45 C to +110 C for Zurcon Z51/Z52 (depending on O-Ring materials) Mineral oil-based hydraulic fluids, flame retardant hydraulic fluids, environmentally safe hydraulic fluids (bio-oils), phosphate ester, water, air and others, depending on scraper and O-ring material compatibility. Important Note: The above data are maximum values and cannot be used at the same time. e.g. the maximum operating speed depends on material type, environment, temperature and media. 5

8 Turcon Excluder F Materials The following material combination has proven effective for most applications: All round material for hydraulic applications with reciprocating, short stroke or helical movements in mineral oils, flame retardant hydraulic fluids HFC, phosphate ester, bio-oils or fluids having less satisfactory lubricating properties: Turcon Excluder F: Turcon M12 O-Ring: Set code: NBR, 70 Shore A N FKM, 70 Shore A V M12N or M12V For medium to heavy applications with reciprocating movements in mineral oils and other media with good lubrication: Excluder F Turcon T46 O-Ring: Set code: NBR, 70 Shore A N FKM, 70 Shore A V T46N or T46V For specific applications, all Turcon materials are available. Other viable material combinations are listed in Table 1. Design and Installation Instructions All Excluder F scrapers are preferably installed in closed grooves - installation dimensions see Table 2. 6

9 Turcon Excluder F Table 1 Turcon and Zurcon Materials for Excluder F Material, Applications, Properties Turcon M12 First material choice for linear motion Overall improved properties For new constructions and updating For all commonly applied hydraulic fluids including fluids with low lubrication performance Lowest friction and best sliding properties Lowest wear on scrapers Improved absorption of abrasive contaminants No wear or abrasion of counter surface Mineral fibre and Additives filled Colour: Dark grey Turcon T40 For lubricating and non-lubricating fluids High frequency and short strokes Water hydraulics Surface texture is not suitable for gas Carbon fibre filled Colour: Grey Turcon T46 For lubricated hydraulics in linear motion High compressive strength High extrusion resistance Very good sliding and wear properties BAM tested Bronze filled Colour: Light to dark brown, which may have variations in shading. Zurcon Z51*** For mineral oil based fluids Very high abrasion and extrusion resistance For counter surface with rougher surface finish Hard to installlimited chemical resistance Max. working temperature 110 C Cast polyurethane Colour: Yellow to light-brown. Code O Ring Material Shore A Code O-Ring Operating Temp.* C M12 NBR - 70 N -30 to +100 Steel NBR - 70 T -45 to +80 Low temp. FKM - 70 V -10 to +200 T40 NBR - 70 N -30 to +100 Steel NBR - 70 T -45 to +80 Low temp. FKM - 70 V -10 to +200 EPDM-70 E** -45 to +145 Mating Surface Material Steel, hardened Steel, chrome plated (rod) Steel plated (rod) Cast iron Stainless steel Titanium Steel, chrome plated (rod) Cast iron Stainless steel Aluminium T46 NBR - 70 N -30 to +100 Steel, hardened NBR - 70 T -45 to +80 Low temp. FKM - 70 V -10 to +200 Z51 NBR - 70 N -30 to +100 Steel NBR - 70 T -45 to +80 Low temp. Steel, chrome plated (rod) Cast iron Steel, hardened Cast iron Ceramic coating Stainless steel * The O-Ring Operation Temperature is only valid in mineral hydraulic oil, except EPDM. BAM: Tested by Bundesanstalt Materialprüfung, Germany. ** Material not suitable for mineral oils. *** max. ø 2200 mm Highlighted materials are standard. Speed m/s max

10 Turcon Excluder F Material, Applications, Properties Zurcon Z52*** For mineral oil based fluids High abrasion resistance For counter surface with rougher surface finish Good extrusion resistance Limited chemical resistance Max. working temperature 110 C Cast polyurethane Colour: Turquoise. Zurcon Z80 For lubricating and non-lubricating fluids Water based fluids, air and gases Dry air pneumatics High abrasion and extrusion resistance For service in abrasive conditions and media with particles Good chemical resistance Limited temperature capability (-60 to +80 C) UHMWPE (Ultra High Molecular Weight Polyethylene) Code O Ring Material Shore A Code O-Ring Operating Temp.* C Z52 NBR - 70 N -30 to +100 Steel NBR - 70 T -45 to +80 Low temp. Z80 NBR - 70 N -30 to (+100) NBR - 70 T -45 to +80 Low temp. EPDM-70 E** -45 to (+145) Mating Surface Material Steel, hardened Steel, chrome plated (rod) Cast iron Stainless steel Aluminium Steel Steel, chrome plated (rod) Stainless steel Aluminium Ceramic coating * The O-Ring Operation Temperature is only valid in mineral hydraulic oil, except EPDM. BAM: Tested by Bundesanstalt Materialprüfung, Germany. ** Material not suitable for mineral oils. *** max. ø 2200 mm Highlighted materials are standard. Speed m/s max

11 Turcon Excluder F Installation Recommendation L 3 r 1 d 2 60 r max. 0.3 a min. 1.0 d N D 4 D 3 Figure 2 Installation drawing Table 2 Installation dimensions Standard recommendations Series No. Recommended Range Rod dn f8/h9 Available Range D 3 H9 L Bore D 4 H11 Radius r 1 max. Step a min. O-Ring Cross- Section WEF d N d WEF d N d WEF d N d WEF d N d WEF d N d WEF d N d Sizes above mm are available on special part number. d 2 Ordering example Turcon Excluder F complete with O-Ring in NBR, standard application: Series: WEF1 (from Table 2) Rod diameter: d N = 50.0 mm TSS Part No.: WEF (from Table 3) Select the material from Table 1. The corresponding code numbers are appended to the TSS Part No. Together these form the TSS Article Number. The TSS Article Number for all intermediate sizes not shown in Table 3 can be determined following the example below. TSS Article No. Series No. Type (Standard) Rod diameter x 10 WEF M12 N Quality Index (Standard) Material Code (Seal Ring) Material Code (O-Ring) 9

12 Turcon Excluder F Table 3 Installation dimensions / TSS Part No. Rod Bore Radius Step d N f8/h9 D 3 H9 L D 4 H11 r 1 max. a min *) *) *) *) *) *) *) *) *) *) *) *) TSS Part No. WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF O-Ring Size x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x

13 Turcon Excluder F Rod Bore Radius Step d N f8/h9 D 3 H9 L D 4 H11 r 1 max. a min TSS Part No. WEF WEF WEF WEF WEF WEF3000 WEF3050 WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF WEF O-Ring Size x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x

14 Turcon Excluder F Rod Bore Radius Step TSS Part No. O-Ring Size d N f8/h9 D 3 H9 L D 4 H11 r 1 max. a min WEF WEF WEF x x x WEF WEF WEF x x x WEF WEF WEF x x x WEF WEF WEF x x x WEF WEF WEF x x x WEF WEF WEF x x x WEF WEF x x 8.40 The rod diameters in bold type comply with the recommendations of ISO 3320 *) Installation in grooves according to ISO 6195 Type D Other dimensions and all intermediate sizes up to 2600 mm diameter including imperial (inch) sizes can be supplied upon request. 12

15 Turcon Excluder G Double Acting Rubber Energized Double-acting Scraper Material: Turcon and Zurcon 13

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17 Turcon Excluder G Turcon Excluder G The Turcon Excluder G is a double-acting scraper with two geometrically different scraper lips, which are positioned back-to-back. The scraper is always installed with 2 O-Rings as elastic energizing elements. The scraper function itself is performed by the Turcon Excluder G element. The O-Rings maintains the pressure of the scraper lips against the sliding surface and compensates deflections of the piston rod. Drain O-Ring Tough scraper (particular in Zurcon materials) Can compensate for deflections of the piston rod or plunger Good scraping effect even against firmly adhered dirt, etc. Good sealing effect from the inside against the residual fluid film adhering to the surface of the piston rod Very high resistance to hydraulic media (Turcon ) Available for diameters from 100 up to mm (Turcon ), up to mm (Zurcon Z51/Z52). Disadvantages compared to Excluder 2, 5 and F P Turcon Scraper Ring Require 2 pcs O-Rings in different sizes Drain required Demanding installation operation Only available for diameter above 100 mm Figure 3 Turcon Excluder G Excluder G has two functions: Advantages compared to Excluder 2, 5 and F No dirt trapping because of extended scraping lip Technical Data Scrape contaminants from the retracting piston rod and thus to protect the system from soiling Hold back the residual fluid film on the extending piston rod on the fluid side. Excluder G is preferably used in heavily dirty environments where it is mandatory to prevent dirt from being trapped in front of the scraper element e.g. when the rod is facing upwards, typically for bigger rod diameters in applications like: Mining equipment Hydraulic presses Steelworks Heavy construction machinery Offshore installations Water works Advantages Operating conditions: Speed: 5 m/s (Turcon ) 2 m/s for Zurcon Z80 1 m/s for Zurcon Z51/Z52 Temperature: -45 C to +200 C (Turcon ) -60 C to +80 C (Zurcon Z80) -45 C to +110 C (Zurcon Z51/Z52) (depending on O-Ring material) Media: Mineral oil-based hydraulic fluids, flame retardant hydraulic fluids, environmentally safe hydraulic fluids (bio-oils), phosphate ester, water, air and others, depending on scraper ring and O-Ring material compatibility. Important Note: The above data are maximum values and cannot be used at the same time. e.g. the maximum operating speed depends on material type, environment, temperature and media. In principle the same as for Excluder 2, 5 and F. Outstanding sliding properties Stick-slip-free, no sticking (for Turcon materials) 15

18 Turcon Excluder G Installation Instructions Excluder G scrapers are always installed in closed grooves - installation dimensions see Table 5. First O-Ring 1 is installed in the groove. O-Ring 2 is mounted on the scraper ring before compressed into a kidney-shape and placed in the groove see Figure 4. Place the Turcon Excluder G in compressed form into the groove and push against the Scraper in the direction of the arrow at Figure 4. Materials The following material combination has proven effective for most applications: All round material for hydraulic applications with reciprocating, short stroke or helical movements in mineral oils, flame retardant hydraulic fluids HFC, phosphate ester, bio-oils or fluids having less satisfactory lubricating properties: Turcon Excluder G: Turcon M12 O-Ring: NBR, 70 Shore A N FKM, 70 Shore A V Set code: M12N or M12V For medium to heavy applications with reciprocating movements in mineral oils and other media with good lubrication: Turcon Excluder G: Turcon T46 Figure 4 Installation of Turcon Excluder G O-Ring: NBR, 70 Shore A N FKM, 70 Shore A V Set code: T46N or T46V For specific applications, all Turcon materials are available. Other viable material combinations are listed in Table 4. 16

19 Turcon Excluder G Table 4 Turcon and Zurcon Materials for Excluder G Material, Applications, Properties Turcon M12 First material choice for linear motion Overall improved properties For new constructions and updating For all commonly applied hydraulic fluids including fluids with low lubrication performance Lowest friction and best sliding properties Lowest wear on scrapers Improved absorption of abrasive contaminants No wear or abrasion of counter surface Mineral fibre and Additives filled Colour: Dark grey Turcon T40 For lubricating and non-lubricating fluids High frequency and short strokes Water hydraulics Surface texture is not suitable for gas sealing Carbon fibre filled Colour: Grey Turcon T46 For lubricated hydraulics in linear motion High compressive strength High extrusion resistance Very good sliding and wear properties BAM tested Bronze filled Colour: Light to dark brown, which may have variations in shading Zurcon Z51*** For mineral oil based fluids Very high abrasion and extrusion resistance For counter surface with rougher surface finish Hard to install Limited chemical resistance Max. working temperature 110 C Cast polyurethane Colour: Yellow to light-brown Code O Ring Material Shore A Code O-Ring Operating Temp.* C M12 NBR - 70 N -30 to +100 Steel T -45 to +80 NBR - 70 Low temp. FKM - 70 V -10 to +200 Mating Surface Material Steel, hardened Steel, chrome plated (rod) Cast iron Stainless steel Titanium T40 NBR - 70 N -30 to +100 Steel NBR - 70 T -45 to +80 Steel, chrome plated Low temp. (rod) Cast iron FKM - 70 V -10 to +200 Stainless steel EPDM-70 E** -45 to +145 Aluminium T46 NBR - 70 N -30 to +100 Steel, hardened NBR - 70 T -45 to +80 Steel, chrome plated Low temp. (rod) Cast iron FKM - 70 V -10 to +200 Z51 NBR - 70 N -30 to +100 Steel NBR - 70 T -45 to +80 Steel, hardened Low temp. Cast iron Ceramic coating Stainless steel * The O-Ring Operation Temperature is only valid in mineral hydraulic oil, except EPDM. BAM: Tested by Bundesanstalt Materialprüfung, Germany. ** Material not suitable for mineral oils. *** max. Ø 2200 mm Highlighted materials are standard. Speed m/s max

20 Turcon Excluder G Material, Applications, Properties Zurcon Z52*** For mineral oil based fluids High abrasion resistance For counter surface with rougher surface finish Good extrusion resistance Limited chemical resistance Max. working temperature 110 C Cast polyurethane Colour: Turquoise Zurcon Z80 For lubricating and non-lubricating fluids Water based fluids, air and gases Dry air pneumatics High abrasion and extrusion resistance For service in abrasive conditions and media with particles Good chemical resistance Limited temperature capability (-60 to +80 C) UHMWPE (Ultra High Molecular Weight Polyethylene) Code O Ring Material Shore A Code O-Ring Operating Temp.* C Z52 NBR - 70 N -30 to +100 Steel T -45 to +80 NBR - 70 Low temp. Mating Surface Material Steel, hardened Steel, chrome plated (rod) Cast iron Stainless steel Aluminium Z80 NBR - 70 N -30 to (+100) Steel NBR - 70 T -45 to +80 Steel, chrome plated Low temp. (rod) Stainless steel EPDM-70 E** -45 to (+145) Aluminium Ceramic coating * The O-Ring Operation Temperature is only valid in mineral hydraulic oil, except EPDM. BAM: Tested by Bundesanstalt Materialprüfung, Germany. ** Material not suitable for mineral oils. *** max. Ø 2200 mm Highlighted materials are standard. Speed m/s max. 1 2

21 Turcon Excluder G Installation Recommendation L 3 d 2 (1) d 2 (2) Drain r 1 r max. 0.3 a d N D 4 D 3 Figure 5 Installation drawing Table 5 Installation dimensions Standard recommendations Series No. Recommended Range Rod d N f8/h9 Available Range D 3 H8 L /-0 Bore D 4 H8 Radius r 1 Step a +0/-0.1 O-Ring 1 Cross- Section O-Ring 2 Cross- Section d 2(1) d 2(2) WEG d N d N WEG d N d N WEG d N d N WEG d N d N Sizes above mm are available on special part number. Table 6 Minimum Installation Materials Zurcon Z52 Turcon Materials Zurcon Z51 and Z80 Rod diameter (min.) 100 mm 120 mm 140 mm Table 7 Calculation of O-Ring ID Diamater Series No. O-Ring 1 O-Ring 2 WEG1 (d N + 1) x 5.33 (d N + ) x 3.53 WEG2 (d N ) x 5.33 (d N + ) x 3.53 WEG3 (d N ) x 7.00 (d N + 6.0) x 5.33 WEG4 (d N ) x 8.40 (d N + 6.0) x

22 Turcon Excluder G Ordering example Turcon Excluder G complete with O-Rings in NBR, standard application: Series: WEG3 (from Table 5). Rod diameter: dn = mm. TSS Part No.: WEG (from Table 8). Select the material from Table 4. The corresponding code numbers are appended to the TSS Part No. Together these form the TSS Article Number. The TSS Article Number for all intermediate sizes not shown in Table 8 can be determined following the example beside. TSS Article No. Series No. Type (Standard) Rod diameter x 10 WEG M12 N Quality Index (Standard) Material Code (Seal Ring) Material Code (O-Ring) Table 8 Installation dimensions / TSS Part No. Rod Bore Radius Step TSS Part No. O-Ring 1 Cross-Section O-Ring 2 Cross-Section d N f8/h9 D 3 H8 L 3 +0/-0.2 D 4 H8 r 1 max. a +0/-0.1 d 1 d WEG x x WEG x 5, x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x 5.33 The rod diameters in bold type comply with the recommendations of ISO Other dimensions and all intermediate sizes up to 2600 mm diameter including imperial (inch) sizes can be supplied upon request. 20

23 Turcon Excluder G Rod Bore Radius Step TSS Part No. O-Ring 1 Cross-Section O-Ring 2 Cross-Section d N f8/h9 D 3 H8 L 3 +0/-0.2 D 4 H8 r 1 max. a +0/-0.1 d 1 d WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x 5.33 The rod diameters in bold type comply with the recommendations of ISO Other dimensions and all intermediate sizes up to 2600 mm diameter including imperial (inch) sizes can be supplied upon request. 21

24 Turcon Excluder G Rod Bore Radius Step TSS Part No. O-Ring 1 Cross-Section O-Ring 2 Cross-Section d N f8/h9 D 3 H8 L 3 +0/-0.2 D 4 H8 r 1 max. a +0/-0.1 d 1 d WEG x x WEG x x WEG x x WEG x x WEG x x WEG x x 5.33 The rod diameters in bold type comply with the recommendations of ISO Other dimensions and all intermediate sizes up to 2600 mm diameter including imperial (inch) sizes can be supplied upon request. 22

25 Scraper DA27 Double Acting Rubber Energized Double-acting Scraper Material: NBR Elastomer 23

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27 Scraper DA27 Scraper DA27 The scraper DA27 is a moulded double-acting elastomer scraper. It has two geometrically different scraper lips. Surface Quality diameter: Rz<6.3, Ra<1.6 Rod diameter due to installed rod seal Material Standard material: NBR, 90 Shore A Applications Presses Injection moulding machines Big size hydraulic cylinders Processing Figure 6 Scraper DA27 The scraper is preferably used for reciprocating piston rods and plunger pistons in large hydraulic cylinders. It prevents the penetration of dirt into the system and on the medium side holds back the residual oil film from the extending piston rod. The scraper is preferably used in conjunction with our rod seal Turcon Stepseal K, Zurcon Rimseal i.e. seals with a hydrodynamic back-pumping function. Advantages -Low friction Good scraping effect both inwards and outwards Simple, installation groove Compact design Easy installation and removal without tools Technical Data Speed: up to 1 m/s Temperature: -30 C to +100 C Media: Mineral oil-based hydraulic fluids, flame retardant hydraulic fluids and bio-oils with reduced temperature range due to media Most of the listed sizes and additional sizes are produced by vulcanisation from a master mould. This is indicated on the 5th digit of the TSS part no. by a V for vulcanisated scraper or a O for only moulded (high volume). Sealing system design options In some cases, like in long stroke applications, the volumen between the main seals and scraper can be filled with fluid during the outstroke. To prevent pressure build up between the Scraper DA27 and the seal, a drain line is recommended or a manual notching of the inward lip. (One notch per circumference) Notch Figure 7 Scraper DA 27 Important Note: The above data are maximum values and cannot be used at the same time. e.g. the maximum operating speed depends on material type, pressure, temperature and gap value. Temperature range also dependent on medium. 25

28 Scraper DA27 Installation Recommendation r max. 0.4 r 3.0 B L3 a d N D4 D3 Figure 8 Installation drawing Ordering Example Scraper DA27 Rod diameter: d N = mm TSS Part No.: WD27V5000 (from Table 9) Material: Standard material NBR 90 Shore A, Code N9T52 TSS Article No. WD27 V TSS Series No. Type Rod diameter x 10 Quality Index N9T52 Material code 26

29 Scraper DA27 Table 9 Installation dimensions / TSS Part No. Rod Bore Step d N f8/h9 D 3 H9 L D 4 H11 a min. B TSS Part No. WD27V4000 WD27V4100 WD27V4200 WD27V4250 WD27V4300 WD27V4350 WD27V4400 WD27V4500 WD27V4600 WD27V4700 WD27V4800 WD27V4850 WD27V4900 WD27V4950 WD27V5000 WD27V5100 WD27V5200 WD27V5300 WD27V5400 WD27V5500 WD27V5600 WD27V5700 WD27V5800 WD27V5850 WD WD27V6100 WD27V6150 WD27V6200 WD27V6300 WD27V6400 WD27V6500 WD27V6600 WD27V6700 WD27V6800 WD27V6950 WD27V7000 Other dimensions on request 27

30 Scraper DA27 Rod Bore Step d N f8/h9 D 3 H9 L D 4 H11 a min. B TSS Part No. WD27V7100 WD27V7200 WD27V7300 WD27V7400 WD27V7500 WD27V7600 WD27V7700 WD27V7800 WD27V7900 WD27V8000 WD27V8100 WD27V8200 WD27V8250 WD27V8400 WD27V8450 WD27V8500 WD27V8600 WD27V8700 WD27V8800 WD27V8850 WD27V8900 WD27V9000 WD27V9200 WD27V9500 WD27Y1000 WD27Y1010 WD27Y1045 WD27Y1050 WD27Y1100 WD27Y1220 WD27Y1250 WD27Y1300 Other dimensions on request 28

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32 Trelleborg is a world leader in engineered polymer solutions that seal, damp and protect critical applications in demanding environments. Its innovative engineered solutions accelerate performance for customers in a sustainable way. The Trelleborg Group has local presence in over 40 countries around the world. facebook.com/trelleborgsealingsolutions twitter.com/trelleborgseals youtube.com/trelleborgseals flickr.com/trelleborgsealingsolutions 2012 Trelleborg Group. At time of publication the information contained in this literature is believed to be correct and accurate. 99GBWACATAE1112