Used Fritz Werner Spline Shaft Grinding Machine for sale (69,207)

Condition: good (used), Year of construction: 2022, operating hours: 2,800 h, grinding length: 600 mm, grinding wheel diameter: 450 mm, total width: 3,300 mm, total length: 2,900 mm, total height: 1,900 mm, grinding diameter: 290 mm, quill stroke: 80 mm, distance between centers: 600 mm, grinding wheel width: 50 mm, feed length X-axis: 300 mm, feed length Z-axis: 800 mm, grinding spindle motor power: 25,000 W, grinding spindle speed: 4,500 rpm, j.stumpf [at] ivg.auction Technical Data Year of manufacture, serial number, and operating hours o Year of manufacture: 2022 o Operating hours recorded: 2,737 Control and monitoring o Control: SIEMENS, Type SINUMERIK o Monitoring system: MARPOSS, Type P7 Travel distances o X-axis: 300 mm o Z-axis: 800 mm Axis speeds o X and Z axes max.: 15,000 mm/min o X and Z axes min.: 0.010 mm/min Work area o Max. grinding length: 600 mm o Center height above the table: 150 mm o Max. diameter of oscillation above the table: 290 mm o Workpiece weight: approx. 50 kg Performance data o Grinding wheel speed: up to 120 m/s o Max. grinding wheel dimensions: Ø 450 x 50 mm o Workpiece spindle speed: 30 - 2,000 rpm o Grinding wheel drive: 25 kW / 70 Nm / max. 4,500 min⁻¹ o Workpiece spindle: 15 kW / 24 Nm / max. 5,000 min⁻¹ Hydraulic steady rest and dresser o Arbor taper: MK4 o Max. quill stroke: 80 mm o Diamond dressing disc, outer Ø 100 mm Workpiece spindle o Arbor taper: MK5 Operating data & connection values o Operating hours recorded: 2,737 Machine connection values o 3 x 400 VAC / 50 Hz / 58 kW / 97 A Dimensions / footprint o Required footprint (L x W x H): 2,810 x 3,300 x 1,900 mm Peripherals Hnedpfozgan Sjx Abhjp • Automated workpiece removal station, JOVI, Type 1113A, year of manufacture 2022, weight approx. 300 kg • Air filter unit, IFS, Type VARIO M 2000, serial no. 568113, year of manufacture 2022, weight approx. 120 kg, connection power 400/460 V, 50/60 Hz, 0.7 kW, 1.7/1.6 A • Water cooling unit, HASCH, Type MCW-50CT-17AUZ1-3407C, serial no. 1001220302582, year of manufacture 2022, weight approx. 150 kg, tank volume approx. 15 l • Coolant filter system, MICRONFILTER, Type EASY 250 / KMT350, serial no. 0201, year of manufacture 2022, tank volume approx. 2,300 l, connection power 400 V / 50 Hz, 5.34 kW • Immersion cooler, HASCH, Type MCS-120ST-05AOP6R7S6UZ1-3407C, serial no. 1003220400836, year of manufacture 2022, weight approx. 206 kg • Coolant tank, MICRONFILTER, Type VR200L / MIN-150L, serial no. 0201, year of manufacture 2022, tank volume approx. 150 l, connection power 400 V / 50 Hz, 1.1 kW • Separating magnet, MICRONFILTER, Type KMT350, serial no. 0212 • Loading unit, DANOBAT, Type rotary table lift, serial no. 3810490908, year of manufacture 2022, weight approx. 170 kg, max. load capacity approx. 230 kg • Rotary table trolley, year of manufacture 2022, serial number 110000503

Condition: new, Year of construction: 2026, power: 7.5 kW (10.20 HP), Batch ball mills find applications in various industries where the processing of materials in discrete batches is required. The versatility of batch ball mills makes them suitable for a range of applications. Here are some common batch ball mill applications: 1. Ceramics Industry: - *Glaze Preparation:* Batch ball mills are extensively used in the ceramics industry for preparing glazes. Raw materials such as feldspar, quartz, and clay are ground with ceramic balls to achieve the desired particle size for glaze formulation. 2. Chemical Industry: - *Material Grinding:* Batch ball mills are used for grinding and blending various chemical materials. This includes the production of pigments, dyes, and other specialty chemicals where precise particle size control is crucial. 3. Pharmaceuticals: - *Drug Formulation:* In pharmaceutical manufacturing, batch ball mills are used for grinding and blending powders to create drug formulations. The controlled environment provided by these mills is essential for maintaining the integrity of pharmaceutical compounds. 4. Food Industry: - *Ingredient Mixing:* Batch ball mills may find application in the food industry for mixing and grinding ingredients. This can include the production of food additives, flavorings, and other powdered or granular products. 5. Mining and Minerals Processing: - *Ore Grinding:* Batch ball mills are used in mining and minerals processing for grinding minerals and ores. The controlled grinding helps in obtaining the desired particle size for subsequent processes, such as mineral separation or extraction. 6. Paints and Coatings: - *Pigment Dispersion:* In the paints and coatings industry, batch ball mills are employed for dispersing pigments into paint formulations. Achieving a uniform particle size is crucial for the quality and appearance of the final coating. 7. Building Materials: - *Raw Material Grinding:* Batch ball mills are used in the preparation of raw materials for the production of building materials, such as cement and concrete. Grinding of materials like limestone and clay helps in obtaining the desired fineness for subsequent processes. 8. Electronic Materials: - *Ceramic Powder Processing:* In the electronics industry, batch ball mills can be employed for processing ceramic powders used in the production of electronic components and insulating materials. 9. Research and Development: - *Material Testing:* Batch ball mills are often used in research and development laboratories for testing and optimizing material formulations. They provide a controlled environment for small-scale processing and experimentation. 10. Customized Applications: - *Specialized Processes:* Batch ball mills can be adapted for various specialized processes in different industries where precise grinding and mixing are required. Custom modifications can be made based on specific application requirements. When using a batch ball mill, it's important to consider factors such as the type of material being processed, desired particle size, and the specific requirements of the end product. Additionally, following the manufacturer's guidelines and maintaining proper operating conditions are essential for efficient and effective milling processes. Hjdpoq I N H Nefx Abhjnp Technical details We have different options for different requirements, please contact our team for more info.

Condition: new, Year of construction: 2025, Working width: 380 mm Working height: 250 mm 1st unit, rotor group: Group of two oscillating rotor brushes, Ø 200 mm, one 1.5 kW motor per brush, variable speed drive 2nd unit, rotor group: Group of two oscillating rotor brushes, Ø 200 mm, one 1.5 kW motor per brush, variable speed drive Both units with oscillation: yes Height adjustment: handwheel Height indicator: mechanical counter Feed speed: 1 - 6 m/min Feed motor power: 0.37 kW Hedpfov R U Ifsx Abhonp Vacuum carpet: yes Machine length: 1400 mm Machine width: 900 mm Weight: 500 kg

Condition: new, Year of construction: 2024, Working width: 380 mm Working height: 150 mm 1. Unit, rotor group: Group of 5 oscillating rotary brushes, Ø 115 mm, each with a 3 kW motor 2. Unit, brush: Scotch Brite Hard / diameter 210 mm, variable drive Height adjustment: handwheel Height display: mechanical counter Feed speed: 4 - 12 m/min Feed motor power: 0.37 kW Hedstnf Rropfx Abhjnp Vacuum conveyor belt: yes Machine length: 1400 mm Machine width: 900 mm Weight: 500 kg

Condition: new, Year of construction: 2026, A superfine ball mill is a type of milling machine that is used to grind materials into very fine particles. This type of ball mill has some distinctive features that make it especially suitable for processing even the hardest materials with low contamination and minimal wear. It is commonly used in various industries, including pharmaceuticals, minerals, pigments, and chemicals, for producing micro powder or nanoparticles. Here are some key features and considerations for a superfine ball mill for micro powder: 1. High Grinding Efficiency: Superfine ball mills are designed to achieve high grinding efficiency by utilizing grinding media with a relatively small size, leading to a large surface area for grinding. 2. Precision Control: These mills often come with advanced control systems to regulate parameters like rotation speed, temperature, and grinding time, allowing precise control over the particle size distribution. Hnjdeq Nf Uwopfx Abhep 3. Specialized Design: The mill is typically designed with features to minimize contamination, such as using materials resistant to wear and corrosion. Some mills also have cooling systems to prevent overheating during the milling process. 4. Variety of Materials: Superfine ball mills can handle a wide range of materials, including both brittle and fibrous substances. They are often used for milling hard materials that require fine grinding, such as ceramics, minerals, or pigments. 5. Size Reduction to Micro or Nano Level: The primary goal of a superfine ball mill is to reduce particle size to the micro or even nano level. This is achieved by the intense grinding action that occurs within the mill. 6. Classifier System: Some superfine ball mills incorporate a classifier system to control the particle size distribution more precisely. This allows for the separation of fine particles from coarser ones during the milling process. 7. Batch or Continuous Operation: Depending on the specific design, these mills can operate in either batch or continuous mode, offering flexibility based on the production requirements. 8. Safety Measures: Safety features may be included, such as monitoring and control systems to prevent overloading, overheating, or other potential issues during operation. When selecting a superfine ball mill for micro powder production, it's important to consider the specific requirements of your application, the characteristics of the materials you're working with, and the desired final particle size distribution. Always follow the manufacturer's guidelines for operation, maintenance, and safety to ensure optimal performance and longevity of the equipment.

Condition: refurbished (used), Year of construction: 2008, functionality: fully functional, refurbished in 2023 NEW: - slides on both sides - conveyor - conveyor slats - tool kit Hnsdpfx Aezk Ew Tebhep

Condition: ready for operation (used), - USED - SURFACE GRINDING MACHINE MAX GRINDING LENGTH: 1015 mm MAX GRINDING WIDTH: 405 mm MAX GRINDING HEIGTH: 350 mm MAGNETIC CHUCK: 400 x 1000 mm GRINDING WHEEL SIZE: 50 x 127 x 350 mm MOTOR POWER: 3,7 kW WEIGHT: 3600 Kg Hnjdpfx Absh St Dqohjp OVERALL DIMENSIONS: 3500 x 1700 x 2000 mm ACCESSORIES: DRESSING TOOL

Condition: ready for operation (used), functionality: fully functional, Brierley Universal Automatic Drill Grinder Model: ZB 32 Hedpszlhlpofx Abhsnp Capacity: 2.5-32mm With Cams

Condition: good (used), Year of construction: 2001, functionality: fully functional, Technical details grinding length 4200 mm grinding width 1300 mm workpiece height 550 mm Control SIEMENS 840 D magnetic clamping plate 4200 x 1300 mm segment head diameter 1400 mm grinding motor turning speeds up to 320 U/min. grinding motor 306 kW weight of the machine ca. 50,0 t Additional information Segment dimensions: 120/106 x 41 x 250 mm Number of segments: 1 set = 26 pieces Grinding motor feed: 0.5 - 35 m/min, infinitely variable Grinding motor feed: Hsdpfx Abezill Uohenp - in steps: 0.002 - 1 mm continuous: up to 5 mm/min. infinitely variable Equipment: * CNC-control SIEMENS Sinumerik 840 D * Automatic hydr. swivelling of the grinding motor from hollow to cross grinding * NC-controlled adjustment of the Marposs measuring head by means of precision support. - new grinding dimensions can be entered into the control, whereby the the grinding head automatically adjusts to the corresponding height. * Dresser with adjustment axis in the machine bed * Coolant system * Electro-magnetic table * Switch cabinet * Oil mist extraction * Documentation Dimensions (length x width x height) Bed: 11800x2200x1400 mm, weight 27500 kg Grinding head: 3000 x 2500 x 3100 mm, estimated weight 14 t 2 x Oil mist extraction: 1200 x 800 x 2000 mm each Control panel: 1200 x 800 x 400 mm Small control cabinet: 1400 x 1400 x 800 mm 2 x gears each 1200 x 800 x 500 mm Control cabinet: 1600 x 800 x 2000 mm Control cabinet: 3400 x 600 x 2400 mm

Condition: good (used), Year of construction: 2007, functionality: fully functional, CNC Precision Surface Grinding Machine Hnodpfsziligex Abhep Grinding area: 600 x 400 x 375 mm Grinding spindle motor: 3.7 kW Table drive: hydraulic Cross-axis drive: electromechanical Grinding wheel: 300 x 50 x 76.2 mm Peripheral speed: 10 - 32 m/s Electromagnetic plate: 600 x 400 mm with holding force control and automatic magnetic pole reversal for demagnetizing Features: Partially enclosed, open-topped loading compartment with a sliding door Cleaning kit for cleaning the work area with hand-held impulse nozzle Holder for prism arm with single-point diamond, MK 0 Grinding spindle speed control with V-constant controller Universal paper filter unit UPF 100, tank capacity approx. 280 liters Coolant pump: 20 liters/minute at 1.5 bar Machine light Without grinding wheels and flanges.

Condition: ready for operation (used), functionality: fully functional, total width: 355 mm, total length: 381 mm, total height: 1,270 mm, grinding wheel diameter: 203 mm, Dormer Automatic Drill Grinder Hodpfx Abszlg Szohjnp Model: 108

Condition: good (used), Year of construction: 1989, Surface grinding machine, manufacturer: JUNG, type: JF 520 MS, year of manufacture: 1989. Hnedpfx Aszicm Asbhsp Equipped with JUNG control system. Grinding surface: 600 mm, width: 200 mm. Magnetic chuck: 500 mm x 200 mm, coolant system installed. Machine documentation available. Further details can be found in the data sheet.

Condition: excellent (used), Year of construction: 2017, functionality: fully functional, Technical details grinding length 600 mm Hodpfozild Rox Abhonp grinding width 300 mm workpiece height - mm total power requirement 7 kW weight of the machine ca. 2,7 t dimensions of the machine ca. 2800x2200x1890 mm Additional information Horizontal surface grinder in excellent condition The machine has been in operation for only a few hours. Work area • Travelling distance X-axis: 765 mm • Travelling distance Y-axis: 340 mm • Table dimensions: 300 x 630 mm • Scale ring division Y-axis: 0.02 mm • Scale ring division Z-axis: 0.005 mm • Autom. transverse infeed: 0.1-8 mm • Autom. vertical infeed: 0.005-0.05 mm Drive unit ratings • Motor rating main drive: 5.5 kW • Motor rating servo-drive: 0.5 kW Dimensions and weights • Total weight: 2,700 kg • Dimensions: 800 x 2200 x 1890 mm • Grinding wheel dimensions: 350 x 40 x 127 mm Accessories: 2-axis position display Knuth Xpos 3.1 Grinding wheel, Grinding wheel flange, Balancing arbor, Balancing stand, Halogen work light, Magnetic chuck 600 x 300 mm Leveling screws, Operating tools,

Condition: good (used), Year of construction: 1995, functionality: fully functional, Technical details internal diameter 800 mm grinding depth 500 mm swing diameter 850 mm weight of the machine ca. 6,4 t Additional information Used internal cylindrical grinding machine with face grinding device in special design with enlarged swing diameter and extended, hydraulic transverse movement Reconstructed and modernized 1995 in the Glauchau manufacturer’s plant, put into operation 1996 1. TECHNICAL DATA 1.1 Working area Grinding diameter in the workpiece guard Hnodpfjzilaxex Abhop internal grinding, min./max. mm 30/630(800) External grinding, max. mm 800 Grinding depth, up to approx. mm 500 Table stroke mm 800 Workpiece diameter, max. mm 800 Swing diameter in workpiece protection, max. mm 800 Without workpiece protection, approx. mm 850 Distance from workpiece spindle head to grinding spindle carrier, max. mm 1225 Adjustment of the internal grinding device on the table, max. mm 545 1.2 Workpiece headstock Cross shift, max. mm 650 Cross adjustment via gear motor and positioning device with HEIDENHAIN digital position display Swivel, max. degrees 15 Workpiece spindle Speeds rpm 16/22/32/ 45/63/90/ 125/18/250 Load capacity, max 1000 Spindle head (with bayonet flange) DIN 55021 size 11 Machine accessories: 2-axis digital displays made by HEIDENHAIN Coolant system with magnetic separator Fixators (machine shoes) Various grinding wheels Diamond dresser Large face plate Internal and face grinding device Halogen machine lamp Machine documentation

Condition: used, Year of construction: 2022, Plus freight 4,000.00 € and installation and commissioning 5,000.00 € Grinding system B Sand 5 with partial lathe Working principle The panel is placed on the infeed table. It goes into the partial lathe and centered. It is ground in the grinding system, through and back. The panel is turned in the partial lathe. It is ground on the other side in the grinding system. Then there are two options: either the panel goes onto the outfeed table and unloaded or it comes back onto the infeed table and is unloaded there (the second option extends the working time). Grinding system equipment 1 upper grinding lamella roller suitable for surfaces. Power 3 kW; D 420 mm; L 1300 mm. Cross brush suitable for grinding the cross fibers. D 420 mm; L 300 mm. Power 1.1 kW. Cross brush suitable for grinding the cross fibers. D 420 mm; L 300 mm. Power 1.1 kW. 3 upper sanding discs for perfectly trimming the longitudinal and transverse wood fibers. Power 1.5 kW each; D 400 mm. Disc brush for beveling edges. The unit functions as a deep brush. After detecting the panel edges, it will follow the door edges. Power 0.75 kW; D 250 mm. Machine features: -The unique sanding system of this machine guarantees perfect wood sanding and/or intermediate sanding of the panels. -All tools are controlled by frequency converters. -All brushes are equipped with quick-release sanding strips without replacing the hub. -The discs are equipped with air bladders to optimize cleaning and service life. -Sanding discs are equipped with a Velcro fastening system. -The feed and rotation speed are PLC-controlled to prevent edge breakage. -High-quality sanding on 4 sides thanks to the system's constant removal rate. -Automatic and rapid unit changeover. - Constant throughput height, PLC and industrial software enable interlinking in a surface line. - Continuously variable speed of the discs, brushes and feed thanks to the fully equipped frequency converter. - Right/left rotation of the discs and brushes with different abrasive grits. - Individually driven feed of the discs, rollers and belts. - Additional adjustment of the brushes and discs to balance the use of the abrasive and to allow for changing the grinding pressure on the surfaces. - Strong support bed made of tubular steel guarantees the best rigidity, stability and flatness. - Planed upper support bed to ensure the best parallelism of the working surface for the grinding discs. - All unit carriages are designed with linear recirculating ball bearing guides, thus high load capacity and high precision. - Motorized feed belt controlled by a frequency converter, 0.55 kW. Machine doors equipped with safety devices. - Machine doors equipped with windows to observe the workpieces during operation. - Under the units, there are 80 mm rubber-coated pressure rollers to hold the workpieces in place during processing. · Low follow-up costs thanks to individual blade replacement. · Low running noise thanks to the enclosed system housing. · All units have suction housings with their respective suction supports. Cover plate with suction nozzle. · Completely encapsulated machine housing for a clean environment. Hsdpfx Absvvkipehonp

Condition: used, Year of construction: 2022, Oscillating cylinder grinding machine – technical specifications: A possible screwed version for spindle sleeve clamping. Something similar to the ProLoc device is used. Storage location: Nattheim. Hsdpfowhqprox Abhenp

Condition: used, Year of construction: 2022, Oscillating cylinder sanding machine, technical specifications: A possible screw variant for spindle sleeve clamping. Something similar to a ProLoc device is used. Storage location: Nattheim Hnedpfjwhqpljx Abhjp

Condition: good (used), Year of construction: 1986, grinding depth: 500 mm, Grinding depth: 500 mm Internal diameter: 20...400 mm Workpiece spindle speed: 40...400 rpm Table speed: 0.1...8 m/min Rapid traverse: 10 m/min Total power consumption: 17 kW Machine weight approx.: 6.5 t Additional information: Grindable diameter with workpiece protection: internal / internal 20..400 mm; external 500 mm Max. workpiece diameter with workpiece protection: 500 mm Max. grinding depth: 315 mm Grindable taper angle: 60° Internal grinding spindle speeds: 2640...16500 rpm Drive power for surface grinding attachment: 4 kW Hjdpfx Aszlnmtsbhsnp Drive power for workpiece motor: 1.5 kW Workpiece spindle speeds: 40...400 rpm Table speed: 0.1...8 m/min Rapid traverse: 10 m/min Table travel: 630 mm Max. distance from the workpiece spindle flange to the grinding spindle support: 1250 mm

Condition: used, machine/vehicle number: 32396, overall weight: 1,000 kg, total length: 1,820 mm, total width: 1,300 mm, total height: 1,250 mm, Year of construction: 2023, Machine Data Dimensions (W × H × D): 1300 × 1820 × 1250 mm Weight: approx. 1000 kg Drive & Performance Main drive: 15 kW, continuous operation Connection power: 30 kVA Cutting Disc Diameter of cutting disc: up to Ø 508 mm / 20" Cutting disc mounting: Ø 32/40 mm Speed: continuously adjustable 1000–2800 / 1000–2400 min⁻¹ Processing Data Max. sample size: Ø 190 mm Feed rate: 0.001–50 mm/s Positioning accuracy of the Z-axis: 0.1 mm Axes X-axis (cross-section): 420 mm, automatic Y-axis (cross-section): 280 mm, automatic Z-axis (parallel cut): 200 mm, automatic (optional) Hedpfxjzilwqe Abhonp Table Data Table size with Z-axis: 550 × 500 mm Table size without Z-axis: 700 × 500 mm T-slot width: 12 mm

Condition: good (used), Machine is in good condition with equipment. Hnodpfx Aowu Ey Eebhep

Condition: good (used), Year of construction: 1997, Table size/sanding length: 200 x 400 mm Hnjdjzh H Rvjpfx Abhep Sanding belt dimensions: 200 x approx. 1500 mm 2 belt speeds via pole-reversing motor: 8/16 m/s Drive motor: 380 V, 1.8/2.2 kW Weight: 145 kg Space required: 1000 x 750 x 1100 mm

Condition: used, Year of construction: 1982, Technical details: grinding diameter: 350 mm grinding length: 1000 mm centre height: 225 mm grinding length: max. 1600 mm centre distance: 1540 mm spindle bore: 38 mm max. swivability: 90 ° weight of the machine ca.: 6,0 t dimension machine xH: 4,4 x 2,45 x 2,3 mm Machine with CNC package and DFU connection Multi-range measuring head for interrupted surface Tailstock with cylinder error correction Final balance balancing device Hnsdpsw Rktzefx Abhop *

Condition: used, Year of construction: 2017, controller manufacturer: Siemens, controller model: 840 Dsl, _____ Description: Year of manuf. : 2017 Control : Siemens 840 Dsl Grinding length : 1000 mm In General: Year of manufacture:2017 Control system:Siemens 840 Dsl Centre height:180 mm Centre distance:1,000 mm Maximum workpiece weight:150 kg X-Axis: Technology:Electromechanical Transverse speed:0.001 – 8,000 mm/min Measuring system:Direct, 0.0005 mm (glass scale) Guideway:Hydrostatic Z-Axis: Technology:Electromechanical Table speed:0.01 – 12,000 mm/min Measuring system:Direct, 0.0005 mm (glass scale) B-Axis: Technology:Continuously swivelling axis Resolution:0.001° Clamping:Hydropneumatic Workpiece spindle: Power:2.0 kW Speed:0–600 rpm Chuck:MK 5 and KK 5 C-axis:0.001° Grinding spindle: Disc configuration:left/right Power:9 kW Speed:1,400 rpm Internal grinding spindle: Power:2.2 kW Speed:60,000 rpm Tail stock: Quill stroke:40 mm Mounting:MK 4 Quill retraction:Hydraulic Cylinder fine adjustment:Yes Equipment: Coolant supply:Coolant system with filter Emulsion mist separator:Mechanical Hjdpfxjzhdybe Abhjnp Grinding wheel dresser:Diamond dressing tile Technology option I:Cone grinding Technology option II:Out-of-round grinding Balancing system:Automatic Grinding detection:Via structure-borne sound Workpiece measurement:Linear encoder Accessories:Various flanges, discs and mandrels

Condition: good (used), Grinding diameter 3-40mm Hnodpfogy Ti Dsx Abhep Length of drill unlimited Point angle 40-180mm Point thinning device Dressing attachment MARCELS MASCHINEN CH

Condition: used, Year of construction: 2002, Automatic reamer tool grinding machine – reamer blade grinding machine Hjdpezl D Dhefx Abhonp Type: ARS 2000 Weight: 7,000 kg Year of manufacture: 2002 - for grinding the chip chamber and chip surface on round reamer tools Gear length: 1,700 mm Center distance: 2,000 mm Center height: 160 mm Resolution of the X-axis: 0.001 mm Resolution of the Y-axis: 0.001 mm Resolution of the Z-axis: 0.001 mm Resolution of the W-axis: 0.001 mm Control system: Siemens Rack PC 840 Processor: Pentium 3 Program memory: Hard disk 20 GB Operating system: Windows 2000 Axis control: 4 axes Simultaneous operation of 2 handwheels