Used U-Bolt for sale (42,182)

Condition: excellent (used), power: 1,700 kW (2,311.35 HP), LOOS U-LS 2600 steam boiler - 2500kg/h - 10 bar - Weishaupt Gas Burner The LOOS U-LS 2000 steam boiler is also on offer. specifications: - working pressure 10 bar - control cabinet - Drechsler gas burner Bwodor Uh A Ropfx Akxsl - Grundfos CR feed pump

Condition: used, Year of construction: 1990, x-travel 2800 mm y-travel 1000 mm z-travel 1200 mm table surface area 2000 x 800 mm rotary table dia. 800 mm spindle taper SK 50 Bjdpoyt Rwlofx Akxowl spindle turning speed - stepless 50 - 2000 U/min max. torque on the spindle 3000 Nm spindle drive 30 kW feeds longditudinal/cross/vertical 2 - 2000 mm/min rapid motion -longitudinal/cross/vertical 7 m/min control SIEMENS control SINUMERIK 850 M no. of tools in magazin 56 workpiece diameter at full load 114 mm wotkpiece diameter with 2 vacant positions 200 mm workpiece length 400 mm weight of tools max. 16 kg tool changing time ca. 8 - 9 sec internal coolant system feed ja / yes weight of the machine ca. 25,4 t = 5-axis CNC-bed-type milling machine with integrated NC-rotary table and NC-swivelling milling head - Acc.: tool pre-setting device, various tool fixtures, chip conveyor, coolant with high pressure pump and filtration device, electron. handwheel, fixators

Condition: used, Year of construction: 1972, functionality: fully functional, total length: 2,000 mm, total height: 1,250 mm, total width: 1,000 mm, saw blade length: 650 mm, cutting range round steel at 90°: 400 mm, input voltage: 400 V, type of input current: three-phase, cutting diameter: 400 mm, Offered from an estate: Kasto EBS 400 U hacksaw Very robust, cast construction Industrial quality Bjdpfx Akeyy R Uxsxowl Made in Germany Year of manufacture: 1972 Two speeds adjustable electrically Additional cutting speeds can be set via pulley adjustment. With rapid traverse. Maximum sawing diameter approx. 400 mm Documentation available. 400V three-phase connection One 650 mm saw blade included Cylinder was resealed some time ago; no oil leakage! Fresh oil change Scraper marks on the guides still visible! With fully functional coolant system. This saw cuts 120 mm round steel in only 4 minutes Sold as seen, for hobbyists/repair. Private sale: no warranty or guarantee of any kind. All information given without liability. Returns excluded.

Condition: refurbished (used), functionality: fully functional, clamping force: 350 kN, Awaiting refurbishment at our headquarters in Northamptonshire is this Arburg 221KS 350/100 U injection moulding machine. Fitted with a Selogica controller. This is a universal machine from Arburg which allows for the clamp unit to be pivoted vertically, ideally suited to insert moulding. These small machines are sought after for the many moulding options they can suit, from a very compact machine. Occasional vertical moulding requirement? These machines are ideal. In standard horizontal configuration, they operate the same as any traditional machine. Any machines awaiting refurbishment with us can be reserved with a 10% deposit and we then prioritise the refurbishment and aim to have the machine available for inspection within 8 weeks from order. Bjdpfx Akswqnggsxewl Refurbished machines from STV Machinery undergo a comprehensive test procedure during which every function of the machine is tested and if necessary repaired. A production run of at least 5000 fault free cycles prior to sign off ensures trouble free operation once delivered. Machines are ultra clean and cosmetically as good as we can get them. We guarantee our refurbs are delivered fault free and leak free. Prices shown are ex-works, but we can quickly provide DAP (Delivered at Place) Incoterm pricing on request. We can take out the hassle and additional costs of purchasing machinery within the UK and EU. Contact us with a potential delivery address and we’ll do the rest. Please note that the video shown is of a near identical machine previously refurbished by STV Machinery. It’s a good example of what can be expected once this machine is fully refurbished by our team. *The video shown in this listing is of a previously refurbished Arburg 221 which is similar to the Arburg 221KS machine we are currently refurbishing. Please contact the team if you would like to see the machine in person.

Condition: ready for operation (used), Year of construction: 2001, functionality: fully functional, grinding length: 900 mm, TECHNICAL DETAILS Maximum grinding length: 900 mm Distance between centers: 600 mm Height of centers (standard): 125 mm Height of centers with raised headstock and tailstock blocks: 175 - 250 mm Maximum swing diameter with riser blocks: 350 - 500 mm Table swivel / each side: 10° Table reversal dwell time: 0 - 5 s Diameter / width / bore: 250 x 13 x 76 mm Grinding wheel spindle speeds: 360 rpm Cross movement of grinding wheel head: 285 mm Rapid infeed and retraction of wheel head: 40 mm Intermittent feed per table reversal: 0.001 - 0.03 mm Bwodpsytf Tbsfx Akxel Micro-adjustment of feed, 1 division on dial: 0.001 mm Continuously variable working speeds (normal / special): 20 - 400 / 10 - 400 rpm MACHINE DETAILS Control type: Conventional

Condition: used, mileage: 576,000 km, power: 368 kW (500.34 HP), first registration: 04/2019, fuel type: diesel, overall weight: 18,000 kg, axle configuration: 2 axles, next inspection (TÜV): 06/2026, brakes: retarder, color: white, gearing type: automatic, emission class: euro6, Year of construction: 2019, Equipment: ABS, air conditioning, electronic stability program (ESP), navigation system, parking heater, soot filter, * Net price * New clutch at 479,000 km * XXL cab with 2 beds * ZF Intarder * 2 tanks (480 l / 480 l) * MAN original stationary air conditioning * ACC distance warning system * LGS lane keeping assistant * Air suspension front/rear * Emergency brake assistant * Hill start assistant * Refrigerator box * Xenon headlights / LED tail lights * Tyres FA: 315/60 R22.5 / RA: 295/60 R22.5 * Unladen weight: 8,372 kg * 1st owner * German vehicle * Top condition Bwodjygzkpopfx Akxjl WhatsApp: Errors and interim sales excepted! Sale takes place with exclusion of any warranty! - We speak Russian - We speak English - We speak Polish - We speak Ukrainian - We speak Spanish

Condition: used, Year of construction: 1998, cutting diameter 260 mm saw band length . mm table height . mm Bandsaw filling machine The tech. Data are manufacturer or operator information and therefore non- binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. About us More than 400 of our own machines in stock Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. We look forward to your visit. Your Markus Hirsch Team Bedpeyycyyofx Akxjwl

Condition: ready for operation (used), Year of construction: 2017, operating hours: 6,929 h, controller manufacturer: HEIDENHAIN, controller model: TNC 530, number of axes: 5, This 5s POSmill H 500 U was manufactured in 2017. It features a Heidenhain TNC 530 control, a 60-station tool magazine, and a KESSLER rotary table with a diameter of 500 mm. The machine includes advanced systems such as automatic coolant level monitoring and a BLUM laser tool measuring system. Consider the opportunity to buy this POSmill H 500 U vertical machining centre. Contact us for further details. • Tool magazine: 60-station, HSK-A63 • Rotary table: KESSLER rotary table, Ø 500 mm • Spindle air blast: Air through the spindle • Internal coolant supply: 20 bar, with belt filter unit • Coolant system: Automatic coolant level monitoring • Media supply: 3-channel media supply at table center • Handwheel: Mobile electronic handwheel • Tool measurement: BLUM laser tool measuring system • Workpiece measurement: Infrared workpiece probing (3D touch probe); workpiece measuring preparation included Bedeyir Dxopfx Akxjwl • Viewing: Rotation viewing window included • Collision monitoring: POS DCM collision monitoring module • Condition: Top condition • Hours: 6,929 • Accessories note: Without tool holders and without quick clamping system Additional equipment • Oil mist separator: Electromechanical • Hydraulic unit: Hydraulic aggregate, M-function controlled

Condition: ready for operation (used), Year of construction: 2012, operating hours: 17,050 h, travel distance X-axis: 670 mm, travel distance Y-axis: 830 mm, travel distance Z-axis: 600 mm, overall weight: 20,000 kg, spindle speed (max.): 18,000 rpm, number of axes: 5, This 5-axis POSmill H 800 U was manufactured in 2012. It features a Heidenhain iTNC 530 control, a new spindle with 5,700 hours since 2021, and a robust 18,000 rpm spindle speed. The machine offers extensive travel with dimensions of 670/830/600 mm and supports 96 tool positions. Additional features include an internal coolant supply at 60 bar, a comprehensive coolant system, and a chip conveyor. Consider the opportunity to buy this POSmill H 800 U universal machining centre. Contact us for more information. Additional equipment • new spindle since 2021: only 5700 spindle hours (Wear-related spindle replacement) • Inspection under power possible Machine Benefits Technical Machine Benefits • Through-spindle air flow Bsdpfxsx D Dx Ae Akxewl • Internal coolant supply: 60 bar • Coolant system with 1000l paper belt filter • Rotating viewing window • Chip flushing gun // bed flushing • Oil mist extraction • Blum tool breakage/measurement • Heidenhain 3d touch probe • Mobile electronic handwheel • Kinematics package Extra Information Spindle replacement due to wear (new spindle: 5600 hours since 2021) Production Hours: Control on: approximately 33300 hours, Spindle on: 17050 hours (new spindle 5600 hours, replaced in 2021 due to wear) Tool Positions: 96 Includes tool holders (shrink-fit chucks, collets, etc.)

Condition: ready for operation (used), Year of construction: 2018, operating hours: 12,971 h, spindle speed (max.): 18,000 rpm, travel distance X-axis: 670 mm, travel distance Y-axis: 830 mm, travel distance Z-axis: 600 mm, controller manufacturer: HEIDENHAIN, controller model: iTNC 530, number of axes: 5, This 5-axis POSmill H 800 U was manufactured in 2018. It features a 670x830x600 mm travel range, a swivel range of -120 to 120 degrees, and a continuous 360-degree rotary table. Equipped with an 18,000 rpm milling spindle, 96-position tool changer, and Heidenhain iTNC530 control, this universal machining centre is ideal for complex machining tasks. Consider the opportunity to buy this POSmill H 800 U universal machining centre. Contact us for more information about this machine. • Swivel range (B): -120° to +120° • Rotary table (C): 360° continuous • Tool changer: 96 positions, HSK-A63, rear-mounted with display • Measuring systems: Heidenhain linear scales (X/Y/Z) with purge air; Heidenhain rotary measuring system • POS kinematic module incl. reference ball • POS contour protection • Control cabinet cooling: active air-to-air • Spindle cooler: controlled • Oil cooling for 4th/5th axes: controlled • Network and USB connections • Automatically controlled crane loading hatch Bwsdpfx Akoydpp Uexel • Coolant pump at the head via M-functions • Tool change safety door • Table media interfaces: 3 hydraulic connections and 1 air connection in the table center • Mobile electronic handwheel • Operating hours: 22,996 total; 12,971 program runtime Additional equipment • External chip agitator / swarf (chip) conveyor • Chip removal device with dedicated pump • Water gun (washdown) • Air at the spindle • Electromechanical oil/coolant separator • Automatic coolant level monitoring • Operating status indicator light (stack light) • Hydraulic power unit, incl. control via M-function Technical Specification Taper Size HSK 63

Condition: ready for operation (used), Year of construction: 2001, operating hours: 16,799 h, travel distance X-axis: 800 mm, travel distance Y-axis: 700 mm, travel distance Z-axis: 600 mm, controller manufacturer: HEIDENHAIN, spindle speed (max.): 12,000 rpm, number of axes: 5, This 5-axis DECKEL MAHO DMC 80 U hi-dyn was manufactured in 2001. It features a rotary speed of up to 12,000 rpm, a B-axis automatic swivel milling head, and a C-axis NC rotary table measuring 900 x 630 mm. The machine includes a 60-position tool magazine, Heidenhain control system, dual pallet changer, and an internal coolant supply at 40 bar. Consider the opportunity to buy this DECKEL MAHO DMC 80 U hi-dyn universal machining centre. Contact us for more information. Bodpfxox H U D Rj Akxowl • B-axis automatic swivel milling head • C-axis NC rotary table: 900 x 630 mm • Tool magazine: 60 positions • Heidenhain control system Additional equipment • Dual pallet changer • Coolant temperature control system • Chip conveyor • Internal coolant supply 40 bar • Paper belt filter • Rotating viewing window • Cleaning gun • Oil and emulsion mist separator Technical Specification Taper Size SK 40

Condition: ready for operation (used), Year of construction: 2018, travel distance X-axis: 620 mm, travel distance Y-axis: 820 mm, travel distance Z-axis: 650 mm, controller manufacturer: HEIDENHAIN, controller model: iTNC-530, This 5-axis POSmill H 500 U was manufactured in 2018, featuring a vertical machining center with X-620, Y-820, Z-650 travel dimensions, and a 60-space workshop. It includes internal coolant supply plus air cooling and is equipped with a Heidenhain iTNC-530 control for five-axis simultaneous milling. If you are looking to get high-quality milling capabilities consider the POSmill H 500 U machine we have for sale. Contact us for more information about this machine. Additional equipment • Optional chucks and approx. 260 HSK63 holders with rack • CAD-CAM Hypermill OPEN MIND license for 5-axis simultaneous milling not inckluded but for sale • Note: The Y-axis is louder than it should be. We recommend replacing the bearings for the Y-axis. However, the machine is running and is still in production. Machine Benefits Technical Machine Benefits • Workshop 60-space / internal cooling / internal coolant supply plus air cooling Extra Information Bwedox D Niaspfx Akxel Milling spindle S = 18,000 rpm, HSK-A 63 Heidenhain - Linear measuring system X, Y, Z/ Air purge for all linear measuring systems/ Active air-to-air control cabinet cooler/ Active cooling for the 4th and 5th axes, controlled Network connection + USB connection/ Spindle cooler, controlled/ Heidenhain iTNC 530 control panel, right-hand side/ Heidenhain rotation measuring system/ POS kinematic module including reference ball/ POS contour lock/ Automatically controlled crane loading hatch External hinged chip conveyor/ Coolant pump on the head via M functions Pump for chip flushing device/ Chip flushing device/ Water gun/ Operating status indicator Air at the spindle/ Electromechanical oil/coolant separator/ Automatic coolant level monitoring/ 3-way media connection in the Table center/ Hydraulic power unit including M-function control Mobile electronic handwheel/ Variants included in the special price/ Through-spindle air/ 60-station HSK-A 63 tool changer/ Internal coolant supply 20 bar with belt filter unit/ Kessler table diameter 500 mm/ Preparation for workpiece measurement/ Infrared workpiece measurement - 3D probe Tool measurement via BLUM laser/ Rotating viewing window/ POS DCM collision module

Condition: excellent (used), Year of construction: 1999, With the AL100 U, you can notching workpieces from Ø 20 to Ø 76.1 mm. The cross support and the carriage with a swivel clamp are steplessly adjustable. This allows grinding of all pipe profiles at any desired angle from 30° to 90°. The AL100 U is capable of grinding square, rectangular, and round tubes of various wall thicknesses and is suitable for all common materials. The abrasive belt can be quickly tensioned, and the grinding rollers can be changed within seconds. Contact rollers are available in all standard sizes. Technical Data: Belt width: 100 mm Belt length: 2000 mm Belt speed: 30 m/sec Voltage: 400 V Motor speed: 2800 rpm Motor power: 3 kW Machine dimensions (L x W x H): 1350 x 600 x 1200 mm Weight: 136 kg Bwjdsyplmtopfx Akxol Accessories / Special Features: • High-performance belt grinder with high belt speed • Robust three-phase motor • Low vibration • 3 grinding rollers for precise notching on tubes, profiles, and flat materials: o 1 contact roller with Ø 21.5 mm for 3/4" pipe o 1 contact roller with Ø 40.5 mm for 1 1/4" pipe o 1 contact roller with Ø 46.5 mm for 1 1/2" pipe • CE compliant Additional contact rollers available in all standard sizes. Siegfried Volz Werkzeugmaschinen Rüschebrinkstr. 151 - 153 DE - 44143 Dortmund - Wambel / Germany

Year of construction: 2007, condition: excellent (used), TETRA PAK CARDBOARD PACKER. MODEL TCBP70 VERSION 110 Bjdpfshu Expsx Akxewl U-FORM & Z-FORM (TWO PACKERS AVAILABLE) YOM 2007 WRAP AROUND EXCELLENT CONDITION CAN BE SOLD OUT SIDE EUROPEAN UNION ONLY! STORED AT THE CUSTOMS WAREHOUSE IN POLAND.

Year of construction: 2020, condition: new, We are selling brand new bearing Timken HH 840210 005-U/2 VL, packed in a box. Bodpfx Asl Axnujkxewl

Year of construction: 2020, condition: new, We are selling brand new bearing TIMKEN HH 840249 005-U/2 VP, packed in a box. Bsdjl Axp Dopfx Akxowl

Condition: new, functionality: fully functional, New, fully functional Becker U4.400SA/K vacuum pumps for sale, with a 6-month warranty. We have 2 units available. Worldwide shipping available – request a quote! Bsdpfjyzmyyox Akxswl If you need vacuum pumps, accessories, or any vacuum-related equipment, do not hesitate to reach out. We are happy to assist with sourcing, technical advice, or custom solutions.

Condition: used, mileage: 316,150 km, power: 175 kW (237.93 HP), first registration: 03/2016, fuel type: diesel, overall weight: 16,020 kg, axle configuration: 2 axles, color: blue, gearing type: automatic, emission class: euro6, loading space volume: 46 m³, loading space length: 7,880 mm, loading space width: 2,480 mm, loading space height: 2,348 mm, Year of construction: 2016, Equipment: ABS, air conditioning, electronic stability program (ESP), parking heater, soot filter, tail-lift, ATEGO 1524 L Refrigerated Box Truck 7.75 m with BÄR U Tail lift, 1.5 t capacity. * Body: SPIER with side door at the front right * FRIGOLBLOCK FK 25 hydraulic refrigeration unit for driving and stationary operation, ELECTRIC 380 V * Permissible total weight: 16,000 kg = payload approx. 6,530 kg * Internal width left compartment approx. 1.64 m / right compartment approx. 0.83 m Bwsdpfjvf Sq Hjx Akxol * Vehicle number for customer inquiries: 3715 * Engine compliant with Euro VI, Version 2 * Air suspension, rear axle * Air conditioning * Rear axle differential lock * Electronic Stability Program (ESP) * FleetBoard (German version) * Additional warm air heating, 2000 W * Tail lift * Weight variant 16.02 t (6.1/10.5) * Cruise control * Engine brake, standard system * Digital tachograph, EU standard, rev counter * Mercedes PowerShift 3 * Central locking system * Electric windows, both sides * Comfort driver's air-sprung seat * Electronic brake system with ABS and ASR * Inline 6-cylinder engine * Cross member for G145 trailer hitch * Front parabolic spring, 6.1 t * OM936 engine, R6, 7.7 l, 175 kW (238 HP), 1000 Nm * AdBlue tank 25 l * Plastic fuel tank 120 l, left side * Prepared for toll registration * Gearbox G 140-8/9.30-0.79 * Main mirror, electrically adjustable, driver’s side * S-cab ClassicSpace, 2.30 m, with tunnel * 24 V, 15-pin trailer socket * Roof hatch/ventilation flap * Rear axle stabiliser under the frame * Wheelbase 5360 mm * Heating, electronic air supply unit * Tubeless tires, 275/70 R 22.5 FA/FLA/RLA * Particulate filter * Environmental badge (green) * Two-seater * Full service history * 2/3 doors No liability for printing or typographical errors. Sale only to traders. Subject to prior sale and errors. Modifications, prior sale and errors expressly reserved. The description serves for vehicle identification purposes only and does not constitute a warranty in the legal sense. Only the description as per the purchase contract is binding. * TOP SERVICE + QUALITY * We are happy to provide you with a LEASING – FINANCE – HIRE PURCHASE quotation * Warranty insurance available on request from the insurer * TÜV / UVV LBW / tachograph inspection and installation of OBU device by our local partners * Export license plate for 30 days * All export customs documentation possible but must be requested individually * TOLL for Toll-Collect can be arranged in-house * Free transfer from Stuttgart Airport or Metzingen (Württ) train station * ARRIVAL TRAIN STATION: 72555 METZINGEN/WÜRTT. * FOR ENGLISH * Andreas Pittas * Thomas Pittas * Alexander Pittas * Robin Pittas WHATSAPP number * ---- Visit our website at * Over 200 vehicles constantly in stock

Condition: good (used), Year of construction: 2018, rated current 60 A voltage 3 - 400 V control voltage 24 V DC --> BUDERUS, type: U-Grind 800 --> Control system: Rexroth, type IndraControl V --> Workpiece diameter max. 250 mm --> Workpiece length max. 800 mm --> (External grinding, internal grinding, hard turning, measuring) --> Speed max. C-workpiece spindle: 1,000 rpm --> High-performance external grinding spindle: 5,100 rpm --> Internal grinding spindle: 30,000 rpm --> Feed rates max. Z 30 m/min, X 60 m/min Bwodjyrhnropfx Akxol Translated with (free version)

Condition: good (used), Year of construction: 2018, rated current 60 A Bedpfx Asyrhnfjkxowl voltage 3 - 400 V control voltage 24 V DC --> BUDERUS, type: U-Grind 800 --> Control system: Rexroth, type IndraControl V --> Workpiece diameter max. 250 mm --> Workpiece length max. 800 mm --> (External grinding, internal grinding, hard turning, measuring) --> Speed max. C-workpiece spindle: 1,000 rpm --> High-performance external grinding spindle: 5,100 rpm --> Internal grinding spindle: 30,000 rpm --> Feed rates max. Z 30 m/min, X 60 m/min Translated with (free version)

Condition: good (used), Year of construction: 1998, Hermle C 600 U CNC Machining Center Manufacturer: Hermle Model: C 600 U Year of manufacture: 1998 Operating voltage: 400 V / 3~ Frequency: 50 Hz Control voltage: 24 V Total rated current: 31 A Bedpfjyrr Ucsx Akxowl Control system: Heidenhain TNC 426 Machine weight: 6,400 kg X-axis travel: 600 mm Y-axis travel: 450 mm Z-axis travel: 450 mm Tool magazine: 30 positions Tool holder, type: SK-40 Accessories: included, as per photos (vice + probe) No guarantee is given for the correctness, completeness or up-to-dateness of the information provided.

Condition: new, neu ca. 2 - 4 Wochen ab Auftr Niederlande 5760 € 111.17 € 3/4" 26,9 mm, 1" 33,7 mm, mm 5 mm 3 mm 93 kg The motor driven AL 1-2U can be used to notch pipes with an external diameter of 27.9 mm 26.9 mm (3/4"), 33.7 mm (1"), 42.4 mm (1 1/4"), 48.3 mm (1 1/2") and 60.3 mm (2")and notch pipes with an external diameter of 22 mm to 76 mm for sink outflows. Do you often have to notch pipes? If so, the motor-driven AL1-2U equipped with a 2.2 kW electric motor is the ideal solution! The motor forms one unit with the special eccentric shaft that drives the notching tool. The motor is also equipped with an on/off switch with a zero voltage protection and guard. All the benefits in a nutshell: high productivity, low investments, simple and rapid operation, a number of diameters are readily available, ideal for double corner joints. Bsdpfjyui Sqox Akxjwl

Condition: ready for operation (used), Year of construction: 1990, functionality: fully functional, For sale due to closure of an artisan bakery: A WP bread roll system built in 1995, preceded by a WP Multimatic, hanging (proofer) + a WP stamping station. Please note that the system must be dismantled by the customer. Bodpfouqw Drjx Akxowl

Condition: excellent (used), Year of construction: 1998, Heidenhain TNC 426 control Travel X/Y/Z: 600/450/450 mm Bwsdjyrirropfx Akxel Spindle speed 10,000 rpm Tool magazine for 30 tools, SK 40

Condition: used, Year of construction: 2012, x-travel 850 mm y-travel 700 mm z-travel 500 mm Control Siemens 840 D rotary table 800 mm c-axis 0.001º ( ±360º) 0 B-axis (table) º mm number of spindle speeds 18.000 U/min/rpm tool taper HSK 63 Tools changer 38 fach/tools Internal cooling system 80 bar total power requirement 43 kVA weight of the machine ca. 10,6 t Equipment- Paper belt filter – 200 l tank- Active control cabinet cooling- Infrared probe M&H (Heidenhain)- Laser tool measuring system Blum- Chip conveyor- Cleaning pistol with pump 2 bar / 40 l min- 3D Quick Set- Electronic Bsdpfx Aeyxy E Rjkxowl handwheel