Handling of UHP and Run Flat Tires. A challenge for the aftermarket. Bernhard Hoffmann Business Unit Manager Wheel Service.

Transcription

1 Handling of UHP and Run Flat Tires A challenge for the aftermarket Bernhard Hoffmann Business Unit Manager Wheel Service Made in Germany

2 AGENDA Mounting & Demounting of UHP and RunFlat Tyres - Issues experienced in the field - Results of the German working group wdk, BRV, DEKRA, ASA The Solutions provided by NUSSBAUM

3 Mounting / Demounting UHP and Run Flat Tyres In 2006 an order for an expertise commissioned a damage on a tyre 205/45R17 84V mounted on a MINI COOPER initiated a process to look deeper into the issues in mounting and demounting procedures of RF tyres

4 Mounting / Demounting UHP and Run Flat Tyres Following this investigation the suspicion was there that the damage was the result of wrong handling during the Mount / Demount procedure More than 50 mount and demount procedures were performed on tyre changers of several makes and the results were documented

5 Damages experienced

6 Damages experienced Traction point during Mounting

7 Damages experienced Bead reamed despite use of lubricant

8 Damages experienced Bead broken

9 Damages experienced Bead damaged

10 Damages experienced Bead squeezed and torn

11 Mounting / Demounting UHP and Run Flat Tyres Further tests on over 220 new and 100 used tyres (in total over 2000 mount / demount procedures) were performed R E S U L T The following variables are responsible for a successful and damagefree mount / demount process of Run Flat tyres: - Design of the wheel - Design of the tire - Design of the tyre changer including it s mounting tools and accessories (i.e. Tyre lubricant) - Temperature in the shop and the tyre - Training level of the operator Only one of these variables NOT within specification can result in a damage of the tyre during the mount / demount process.

12 Mounting / Demounting UHP and Run Flat Tyres A working group led by wdk involving car manufacturers, tyre manufacturers, tyre changer manufacturers, BRV, DEKRA and TÜV was formed to create: Mount and demount instructions for a damage-free handling of Run Flat and UHP tyres. General specification for the tyre changer to handle RF tyres Certification procedure to check the performance of the tyre changer on Run Flat tyres by a neutral official body (i.e. DEKRA, TÜV) Catalogue of possible damages and consequences Specification for the optimum tyre temperature Training and Education strategy

13 MOUNT / DEMOUNT INSTRUCTION Wirtschaftsverband der deutschen Kautschukindustrie e. V. Rev. August 18, 2007

14 MOUNT / DEMOUNT INSTRUCTION Insert bead pusher Steel wheelsfelgenhornschutz Wirtschaftsverband der deutschen Kautschukindustrie e. V. Stand August 18, 2007 Bild 10

15 MOUNT / DEMOUNT INSTRUCTION Step by step mounting Wirtschaftsverband der deutschen Kautschukindustrie e. V. Stand August 18, 2007 Bild 11

16 MOUNT / DEMOUNT INSTRUCTION Demounting Upper Bead 1. Position the sensor to the mounting head as shown 2. Use bead depressors to push the bead to below the rim flange 3. Move rim slowly in direction of rotation 4. Use bead depressors to keep the bead in the drop centre of the rim 5. The last part of the bead should slip over the rim flange near the sensor Ventil Drehrichtung 0 Montagekopf Montiereisen Wirtschaftsverband der deutschen Kautschukindustrie e. V. Stand August 18, 2007

17 Catalogue of possible damages and consequences Apparent damage: Strong castings to the bulge by lever and high tension at the traction point during demounting Cause of the damage: Unsuitable lever, high energy expenditure, to high tension during demounting Consequence: Check tyre for damage and air leakage. Check inner liner in this area Avoidance strategy: Use bead hold down devices and suitable lever, lift bead with little energy, use sufficient lubricants

18 CERTIFICATION OF TYRE CHANGERS The certification for the tire changer is done by a neutral official body, i.e. DEKRA, TÜV The certification process includes - App. 50 Mount and Demount procedures including bead breaking - Measurement of the forces in the traction point during Mounting and Demounting Costs are taken over by the manufacturer of the tire changer The certification is compellingly necessary for the approval through a car manufacturer After the tyre changer has passed the test a dedicated sticker and a certificate will be provided.

19 CERTIFICATION OF TYRE CHANGERS The Technical University in Darmstadt developed a device to measure the forces that are generated during MOUNTING in the traction point to measure the forces generated by the tyre lever during DEMOUNTING

20 CERTIFICATION OF TYRE CHANGERS With this device the exact forces can be measured and documented. The experience shows that forces up to 1,5 kn during MOUNTING and 2 kn during DEMOUNTING do not cause any damages to the RF tyre. (the forces shown in the graph below do exceed those values and the machine cannot be certified)

21 CERTIFICATION OF TYRE CHANGERS The certification of the tire changer is documented by the wdk sticker on the front of the machine A list of certified tire changers and the relevant mountinginstructions are available on the wdk homepage and can be downloaded from there

22 AGENDA Mounting & Demounting of UHP and RunFlat Tyres - Issues experienced in the field - Results of the German working group wdk, BRV, DEKRA, ASA The Solutions provided by NUSSBAUM

23 Certified tire changers The following tire changers in the NUSSBAUM portfolio are wdk certified: TC 110 PRO TC 210 The following accessories are compulsory: - Pneumatic Mounting help PT 250 / M0MN - wdk Kit / M0SN TC 310 The following accessories are compulsory: - Pneumatic Mounting help PT 250 / M0MN - wdk Kit / M0SN TC 355 The following accessories are compulsory: - Pneumatic Mounting help PT 250 / M0MN - wdk Kit / M0SN TC 450

24 TIRE CHANGER TC 110 PRO

25 TIRE CHANGER TC 110 PRO The tire changers TC 110 PRO is the low cost start up product for workshops that do only mount UHP and Run Flat tires from time to time but are in need of a machine that is capable to handle these tires (wdk certified) and do not wan t to spend to much money With the swing arm concept the machine can be placed closed to the wall and requires less space In conjunction with the BM 11 or the BM 30-2 it is the right package for small workshops The TC 110 PRO is the only wdk certified swing arm tire changer in the market

26 TIRE CHANGER TC 110 PRO Pneumatic Mount / Demount Help device and wdk accessories are included in the extend of delivery Bead pressing roller at the mounting head to hold the bead below under the head during mounting

27 TIRE CHANGER TC 110 PRO Technical Specifications Tire changer with mounting arm swinging to the side Pneumatic Mount / Demount Help device included in extend of delivery wdk certified INNER clamping range OUTER clamping range Max wheel width 310 mm / 12 Max wheel diameter 1000 mm / 40 Max rim width 12 Max rim diameter 23 Bead breaker range mm / 2 13 Weight 215 kg Dimensions (H x W x D) 1780 x 2050 x 1160 mm

28 TIRE CHANGER TC 210

29 TIRE CHANGER TC 210 The tire changer TC 210 is the perfect machine for the garage and the small tire shop With the wide clamping range the TC 210 can be used as an universal tire changer for all kinds of wheels from Scooter and Motorcycle (with optional accessories) as well as standard wheels and UHP and Run Flat tires In terms of price / performance ratio it is one of the leading machines in the industry

30 TIRE CHANGER TC 210 Pneumatic Mount / Demount Help device and wdk accessories are COMPULSARY and need to be ordered separately to make the TC 210 wdk compliant M0MN M0SN

31 TIRE CHANGER TC 210 Technical Specifications Tire changer with mounting arm pneumatically hinged to the back Plastic protections for jaws, mounting head, bead breaker blade and tire lever included in the extend of delivery In conjunction with optional accessories PT 250 and wdk kit wdk certified INNER clamping range OUTER clamping range Max wheel width 350 mm / 14 Max wheel diameter 1100 mm / 43 Max rim width 13 Max rim diameter 25 Turntable speed 6 rpm Bead breaker range mm / 2 15 Weight 256 kg Dimensions (H x W x D) 1960 x 1340 x 1850 mm

32 TIRE CHANGER TC 310

33 TIRE CHANGER TC 310 The tire changer TC 310 is the professional machine for the bigger garage and tire shop where speed of operation is a requirement With the 2 speed operation via foot pedal operation it allows a fast and safe handling of the tire due to inverter technology The pneumatic movement of the hexagon bar and the mounting head assists the operator to place the mounting head to the rim in an ergonomic way With the wide clamping range the TC 310 can be used as an universal tire changer for all kinds of wheels from Scooter and Motorcycle (with optional accessories) as well as standard wheels and UHP and Run Flat tires

34 TIRE CHANGER TC 310 Pneumatic Mount / Demount Help device and wdk accessories are COMPULSARY and need to be ordered separately to make the TC 310 wdk compliant M0MN M0SN

35 TIRE CHANGER TC 310 Technical Specifications Tire changer with mounting arm pneumatically hinged to the back Plastic protections for jaws, mounting head, bead breaker blade and tire lever included in the extend of delivery In conjunction with optional accessories PT 250 and wdk kit wdk certified INNER clamping range OUTER clamping range Max wheel width 350 mm / 14 Max wheel diameter 1100 mm / 43 Max rim width 13 Max rim diameter 25 Bead breaker range mm / 2 15 Turntable speed 6 / 12 rpm Weight 270 kg Dimensions (H x W x D) 1960 x 1340 x 1850 mm

36 TIRE CHANGER TC 355

37 TIRE CHANGER TC 355 Automatic Mountinghead The automatic mounting head is designed in a way that NO tire lever is required This is an advantage especially when handling tires with hard side walls UHP and Run Flat tires) but does also help to reduce the efforts for the operator when handling standard tires The automatic mounting head is operated by one control only

38 TIRE CHANGER TC 355 Conventional Clamping of the wheel Today s tire changers with automatic mounting head are all clamping the wheel through the mid center hole. During clamping increased care is required Especially when handling UHP and Run Flat tires high forces are applied to the sidewall of the tire which can lead to a deformation of the mid center hole On the other hand every operator is used to clamp wheel through the 4 jaws of a standard turntable

39 TIRE CHANGER TC 355 Conventional Bead breaker Today s tire changers with automatic mounting head are all equipped with a roller bead breaker. This is pretty good when breaking the beads of UHP and Run Flat tires but has limits with standard tires that have softer side walls. In many cases these wheels cannot be handled on a special tire changer at all The TC 355 is equipped with a conventional bead breaker that can handle all types of tires, from motorcycle to standard tires up to UHP and Run Flat tires. Out of this the TC 355 is also the perfect solution during the high season in the workshop Of course the upper bead can be broken with the roller disc of the pneumatic mounting help

40 TIRE CHANGER TC 355 Pneumatic Mount / Demount Help device and wdk accessories are COMPULSARY and need to be ordered separately to make the TC 355 wdk compliant M0MN M0SN

41 TIRE CHANGER TC 355 Technical Specifications NO need for a tire lever to mount and demount the tire Standard turntable with 4 jaws and standard Electromotor with Inverter for double speed wdk certified INNER clamping range OUTER clamping range Max wheel width 350 mm / 14 Max wheel diameter 1100 mm / 43 Max rim width 13 Max rim diameter 25 Bead breaker range mm / 2 15 Turntable speed 6 / 12 rpm Weight 280 kg Dimensions (H x W x D) 1960 x 1340 x 2000 mm

42 TIRE CHANGER TC 450

43 TIRE CHANGER TC 450 In the market there are mainly big special machines available to mount and demount difficult tires. Those do have very few similarities to standard tire changers, the machines require intensive training, in a lot of cases the operators are reluctant to start working with these machines The handling of tires, especially of UHP and Run Flat tires, is still a delicate matter even though in the meantime there are several instructions and accessories available for conventional tire changers Nevertheless tire changers that are especially designed for the handling of UHP and Run Flat tires cannot be used during high season when the job has to be done quickly The TC 450 combines the advantages of a special machine with those of a conventional tire changer and offers a solution to the operator that he is used to The TC 450 is wdk certified and replaces the TC 410, that is removed from the product offering

44 TIRE CHANGER TC 450 Automatic Mountinghead The automatic mounting head is designed in a way that NO tire lever is required This is an advantage especially when handling tires with hard side walls UHP and Run Flat tires) but does also help to reduce the efforts for the operator when handling standard tires The automatic mounting head is operated by one control only

45 TIRE CHANGER TC 450 Mounting column The mounting column does not, like on competitors machines, pneumatically swing to the back but swings to the side This movement is patented and unique in the market Thanks to the movement of the arm to side the machine can be placed close to a wall. Compared to competitors machines this saves app. 750 mm of space in the workshop

46 TIRE CHANGER TC 450 Conventional Clamping of the wheel Today s tire changers with automatic mounting head are all clamping the wheel through the mid center hole. During clamping increased care is required Especially when handling UHP and Run Flat tires high forces are applied to the sidewall of the tire which can lead to a deformation of the mid center hole On the other hand every operator is used to clamp wheel through the 4 jaws of a standard turntable In addition the turntable is adjustable in the height so that the operator is always standing in an ergonomic position respective to the wheel

47 TIRE CHANGER TC 450 Conventional Bead breaker Today s tire changers with automatic mounting head are all equipped with a roller bead breaker. This is pretty good when breaking the beads of UHP and Run Flat tires but has limits with standard tires that have softer side walls. In many cases these wheels cannot be handled on a special tire changer at all The TC 450 is equipped with a conventional bead breaker that can handle all types of tires, from motorcycle to standard tires up to UHP and Run Flat tires. Out of this the TC 450 is also the perfect solution during the high season in the workshop Of course the upper bead can be broken with the roller disc of the pneumatic mounting help The bead breaker itself is adjustable in 2 positions and can handle wheels up to 14 width

48 TIRE CHANGER TC 450 Variable speed The motor works via an inverter that drives the speed of the turntable, which is controlled using a foot pedal, continuously from 7 to 17 rpm The motor automatically adapts the speed of rotation to the opposed force, reducing the stress put on the tire during the mounting/demounting operation. Thus, tire damage is avoided.

49 TIRE CHANGER TC 450 Pneumatic Mount / Demount help device The pneumatic mount / demount device is included in the extend of delivery, already mounted to the TC 450. The mount / demount device assist in the following operations: Push the rim into the jaws to safely clamp the wheel. Since the cone automatically is blocked over the center of the wheel the operator does not have to take care that all jaws are in right position. On machines where the mount / demount device is attached to the right side the operator has to check carefully that the wheel is placed properly to the jaws Breaking the upper bead if this has not yet been done with the bead breaker blade Push the bead close to the mounting head to position the head Push the bead 180 opposite of the head into the drop center in order to demount the upper bead Push down the bead during mounting. One roller is pushing on the 2 o clock position while a second roller is turning with the movement of the wheel

50 TIRE CHANGER TC 450 Pneumatic Mount / Demount help device

51 TIRE CHANGER TC 450 Technical Specifications Tire changer with turntable and 4 jaws NO need for a tire lever to mount and demount the tire Standard bead breaker blade, breaking the upper bead can also be done with the roller disc of the pneumatic help device Bead breaker is adjustable in 2 positions Electromotor with Inverter for variable speed Turntable height adjustable in 2 position Pedal operated inflator Storage with 4 compartments for valves etc. Pneumatic Mount / Demount help device included in extend of delivery Delivered completely mounted on a pallet in plug and play configuration wdk certified

52 TIRE CHANGER TC 450 Technical Specifications INNER clamping range OUTER clamping range Max wheel width 370 mm / 14,5 Max wheel diameter 1120 mm / 44 Max rim width 14,5 Max rim diameter 27 Bead breaker range mm Bead breaker range mm Geschwindigkeit Spanntisch 7 17 rpm Weight 425 kg Dimensions (H x W x D) 2120 x 2800 x 1900 mm

53 TIRE CHANGER ACCESSORIES Accessories for scooters and motorcycles M09N - Set of scooter jaws M08N SET of motorcycle jaws Reduces clamping range for 4 Increases clamping range for M12N Kit for Go Kart Wheels M84N Mounting head for Handles wheels from 5 13 motorcycle and scooter wheels including quick exchange device (requires M0PN)

54 TIRE CHANGER ACCESSORIES Accessories for passenger cars M42N - Set of plastic rim protections M1ZN Chain with 6 segments Protects rim and tire when mounting to mount UHP and Run Flat tires UHP and Run Flat tires M1XN Bead clamp for steel wheels M1YN Bead clamp for alloy wheels (requires M0PN) M83N Plastic mounting head including quick exchange device

55 TIRE CHANGER ACCESSORIES Other accessories for passenger cars M0JN - TIX inflation device Helps inflating tires with soft side walls (requires M27N) M27N Foot pedal inflation device FPI M05N Roller board M1NN - Set of jaws to increase Assists in the bead breaking operation clamping range for 6 incl. plastic protections

56 Otto Nußbaum GmbH & Co. KG Korker Strasse 24 D Kehl-Bodersweier Tel.: +49 (0) Fax: +49 (0) info@nussbaum-lifts.de Irrtümer und Änderungen vorbehalten Stand: 09. Mai 2011 Ho Made in Germany