Used Bench Drill for sale (7,323)

Condition: new, travel distance X-axis: 2,000 mm, travel distance Y-axis: 2,050 mm, travel distance Z-axis: 1,500 mm, table load: 8,000 kg, spindle diameter: 110 mm, spindle speed (max.): 3,000 rpm, table length: 1,600 mm, table width: 1,440 mm, feed rate X-axis: 10,000 m/min, feed rate Y-axis: 12,000 m/min, feed rate Z-axis: 12,000 m/min, travel distance W-axis: 500 mm, workpiece weight (max.): 8,000 kg, quill travel distance: 500 mm, quill diameter: 110 mm, overall weight: 25,000 kg, Equipment: rotational speed infinitely variable, BRAND NEW BORING MILL (T-TYPE DESIGN) Control and Motors: HEIDENHAIN TNC 640 digital path control HEIDENHAIN package: motors, measuring systems, and handwheel ICS: Internal coolant supply, 20 bar Fgolhcdsxc Hphjw Eek Additional equipment: Tool changer with double gripper, 60 positions Double hinged belt chip conveyor (longitudinal), one at the front and one at the rear Perimetric enclosure Spindle support bearing 250 mm Hinged belt chip conveyor RENISHAW RMP 60 probing system Only inquiries from Germany will be answered // Only inquiries from Germany will be processed

Condition: good (used), Year of construction: 1990, Spare Parts Package for CNC Boring Mill Manufacturer: PFEIFER, Model: FK 105 CNC, Spindle Mount ISO 50, Year: 1990. Fslhcdwsxr Dg Ns Esgk 1. Complete ISO 50 Spindle Head 4. Ball screws with nuts for X-Y-Z-W axes.

Condition: good (used), Year of construction: 1992, Ref. -No.: 10578 Manufacturer: UNION Type: BFT 130 NC Year of construction: 1992 Type of control: CNC Control: Heidenhain 430 Storage location: Halberstadt Country of origin: Germany X-Travel: 2000 mm Y-Travel: 1600 mm Z-Travel: 1600 mm W-Axis: 600 mm Spindle Diameter: 130 mm W-Travel (Boring Spindle): 900 mm Table Load: 8000 kg Clamping Area: 1800 x 2000 mm T - groove width: 28 mm T - slot spacing: 160 mm Tool Taper: ISO 50 Spindle Turning Speed - Stepless: 1000 RPM Spindle Speed: 10 - 2000 RPM Folhcdwsx A Safe Eegk Max. Torque On The Boring Spindle: 3150 Nm Rapid Traverse X-Axis: 2500 m / min Rapid Traverse Z-Axis: 2500 m / min Drive Capacity - Spindle Motor: 15 - 30 kW Borehole Diameter: 800 mm W-axis feed: 2500 mm / min Y-axis feed: 2500 mm / min Table size: 2000 x 1600 mm Rapid adjustments W-axis: 3150 mm/min. Rapid adjustment Y-axis: 5000 mm / min Cross slide movement: 320 mm Torque max. face support: 5300 Nm Tarpaulin diameter max.: 1400 mm Machine length: 6000 mm Machine width: 4000 mm Machine Height: 4000 mm Weight Of The Machine Ca.: 40 t Further information: The machine can be viewed under power by arrangement.

Condition: used, Year of construction: 2000, Horizontal Boring Mill Manufacturer: TOS Model: VARNSDORF WHQ 13.8 CNC Year of manufacture: 2000 CNC control: Heidenhain 426 Completely overhauled in 2022 Inspection report available Travel (X/Y/Z): 3,500 x 2,500 x 1,250 x B800 mm Number of axes: 5 Table length: 2,200 mm Fslex A Ayiehcdw Esgk Table width: 1,800 mm Clamping surface: 1,800 x 1,600 mm Table load: 12 t Number of tool stations: 60 Spindle taper: SK 50 Spindle diameter: 130 mm Spindle speed: 2,500 rpm Power: 90 kW Heidenhain handwheel Telescopic way covers completely overhauled with new scraper. Dimensions (LxWxH approx.): 7,500 x 6,950 x 4,000 mm Weight: 40 t.

Condition: used, Year of construction: 2013, functionality: fully functional, travel distance X-axis: 6,000 mm, travel distance Y-axis: 2,500 mm, travel distance Z-axis: 2,500 mm, table load: 20,000 kg, spindle diameter: 130 mm, spindle speed (min.): 5 rpm, spindle speed (max.): 3,000 rpm, table length: 2,500 mm, table width: 2,000 mm, feed length W-axis: 800 mm, Year of manufacture: 2013. Heidenhain 530 control, 6 axes Folhcjx Evhhodw Eegk Axis travel: X: 6000 mm Y: 2500 mm Z: 2500 mm W: 800 mm Number of controlled axes: 6 Max. table load: 20,000 kg Table dimensions: 2000 × 2500 mm Spindle taper: ISO 50 Spindle diameter: 130 mm Speed range: 5–3000 rpm Max. spindle power: 37 kW Tool magazine: 60 tools

Condition: used, Year of construction: 1994, Some typical specifications for the TOS W75 machine are: Spindle diameter: approx. 75 mm. Spindle speeds: e.g. 18-1800 rpm. X-axis: approx. 1,250 mm. Y-axis: approx. 900 mm. Fsloxw Uclshcdw Eogk Z-axis or W-axis: various values, e.g. 560 mm. Table size: approx. 950 × 950 mm. Weight: approx. 10,000 kg All information provided without guarantee.

Condition: good (used), Drilling capacity 13 mm Spindle mount B 16 6 spindle speeds 410 - 3400 rpm Drilling depth 60 mm - Drill head height adjustable Fgslhcdwswnfare Esk - Motor pole reversible Siegfried Volz Machine Tools Rüschebrinkstr. 151-153 D-44143 Dortmund - Wambel

Condition: new, BRAND NEW T-TYPE FLOOR TYPE MILLING MACHINE HEIDENHAIN TNC 640 CNC Control HEIDENHAIN Package (motors, measuring systems, and handwheel) X-axis: 4,000 mm Z-axis: 1,500 mm Y-axis (cross-ram): 1,300 mm V-axis (cross-column): 1,000 mm Rotary table (C-axis): 2,000 x 2,000 mm Max. load capacity up to 15,000 kg Automatic universal swivel head 1° x 1° (optional with fixed quill Ø 210mm) Spindle taper: SK50 DIN 69871/A Spindle speed: 6,000 rpm (oil-cooled) Maximum spindle motor power: 53 kW ICS - internal coolant supply - 36 bar Rapid traverse X, Y, V, Z: 30 m/min Positioning accuracy: 0.020 mm Repeatability: 0.010 mm ATC - Tool changer: 60-station (vertical/horizontal change) Double hinged belt chip conveyor (longitudinal) Perimetric enclosure (open top) Fgslhcdwoq I Nkbe Eek Only inquiries from Germany will be answered.

Condition: new, Year of construction: 2025, The W25 table drill is a machine that combines power and precision. It is characterized by a solid, rigid structure, high efficiency and precision. The device is equipped with a swivel work table with adjustable height and threading functions with automatic change of the direction of spindle rotation. Machine description Threading function Automatic change of the direction of spindle rotation during threading Manual change of direction of rotation using a foot lever High spindle stiffness Setting the required drilling/tapping depth The drive is transmitted via a belt transmission Height-adjustable work table, tiltable from -45° (left) - +45° (right), with the ability to rotate 360° on the column The base is equipped with 14 mm wide T-slots The belt transmission cover is equipped with a safety limit switch Technical parameters Max. drilling diameter 25 mm Max. spindle quill extension 125 mm MK3 spindle cone Felhcdsrif I Rsw Esgk Spindle speeds 290, 420, 740, 1260, 2150 rpm Distance of the spindle axis from the column 240 mm Column diameter 100mm Table dimensions 280x300 mm Base dimensions 590x375 mm Max. distance of the spindle tip to the table 367 mm Max. distance of spindle tip to base 630 mm Table rotation range in the horizontal axis ±45° Table rotation range around the column is 360° The diameter of the quills is 50mm Motor power 1100W / 400V Dimensions 800 x 400 x 1100mm Weight 165 kg Included B22 self-clamping drill chuck 5-20mm MK2 drill chuck shank

Condition: good (used), Year of construction: 1994, Control: Heidenhain TNC 415 Travel paths: X=2000, Y=2000, Z=1250 mm B axis: 360° Table size: 1600 x 1800 mm Max. workpiece weight: 12,000 kg Work spindle: 130 mm Taper: SK 50 Tool changer: 60 stations Hollow spindle flange Ø: 221.44 mm Max. centring cone Ø: 180 mm Spindle extension: 800 mm Speed: 400 – 1600 rpm Felsxvb Ixshcdw Ejgk Feed: up to 8000 mm/min Table rotation B axis: 1.5 rpm Weight: approx. 32,000 kg Operator platform, electrically height-adjustable approx. 1200 mm, Chip conveyor

Condition: used, Line boring machine WEBO with 4 stations type B 20 make no. 376/13; 376/14; 376/27; 376/36 year of construction approx. 1970 drilling capacity 20 mm spindle adaptor MK 2 - long spindle sleeve drilling head distance 335 mm throat 260 mm pinol stroke 190 mm table size 350 x 1500 mm distance drilling spindle/table min.30 mm / max. 700 mm Spindle speed drill head 376/13 355, 500, 710, 1000, 1400, 2000, 2800, 4000 rpm. Spindle speed drill head 376/14 355, 500, 710, 1000, 1400, 2000, 2800, 4000 rpm. Spindle speed drill head 376/27 250, 355, 500, 710, 1000, 1400, 2000, 2800 rpm. Spindle speed drill head 376/36 180, 250, 355, 500, 710, 1000, 1400, 2000 rpm. Motor power 1,1 / 1,3 kW Mains connection 380 Volt, 50 Hz - Spindle speed via 2 motor speeds and 4 V-belt steps - drill head height adjustment via toothed rack and hand crank approx. 300 mm - height adjustable drilling table approx. 350 mm space requirement L x W x H 1750 x 1100 x 1900 mm weight 1900 kg Fgelhcdjihmwtow Esk good condition

Condition: ready for operation (used), Flott TB 13 ST Drilling Machine / Bench Drill - Clamping table: 225 x 295 mm - Spindle mount: with drill chuck - Throat depth: 185 mm - Speeds: 400-5000 rpm - Column: Diameter 60 mm - Spindle stroke: 60 mm, depth stroke with fine adjustment - Motor power: 0.5 kW - Dimensions: 380 mm x 225 mm x 745 mm (L x W x H) - Weight: 50 kg You are welcome to arrange a viewing. We are happy to arrange low-cost shipping for you! Fslhsxzbylocdw Ejgk You will receive a proper invoice. For foreign customers, a net invoice can also be issued, provided a valid VAT ID number is supplied. Subject to prior sale. Visit our shop and take a look at our other offers as well. Stated company names and trademarks are the property of their respective owners and are used for identification and description purposes only. Deviations from technical data as well as errors in the item description may occur and are reserved.

Condition: good (used), Spindle diameter: 75 mm Machine weight approx. 6500 kg Fgolhcextu D Uodw Esk Siegfried Volz Machine Tools Rüschebrinkstr. 151-153 DE - 44143 Dortmund - Wambel

Condition: new, BRAND NEW MACHINE HEIDENHAIN TNC 640 digital path control HEIDENHAIN package (motors, measuring systems, and handwheel) X-axis: 3,000 mm Y-axis: 1,300 mm Z-axis: 1,500 mm Rotary table: 1,600 x 1,200 mm Maximum workpiece weight: 6,000 kg Automatic universal diagonal swivel head 1° x 1° (optional with fixed ram Ø 210 mm) Spindle taper: SK-50 DIN 69871/A Max. spindle speed: 6,000 rpm (oil-cooled) Max. spindle motor power: 53 kW ICS – internal coolant supply – 36 bar Fgoloq I Ncqjhcdw Eok Rapid traverse X,Y,Z: 30 m/min Positioning accuracy: 0.015 mm Repeatability: 0.010 mm ATC – tool changer: 40 positions (vertical / horizontal change) 2 x longitudinal hinge-type chip conveyors Perimeter enclosure (open top) Only inquiries from Germany will be answered.

Condition: new, Year of construction: 2025, The CORMAK WS32BC table drill is a solid tool with high spindle stiffness. It has automatic left-hand rotation, large spindle stroke and a clear control panel. Constructed from the highest quality seasoned castings, it offers a powerful engine and CE certification. The maximum drilling diameter in steel is 32 mm and the maximum threading diameter is M24. It has 8 ROTATION SPEEDS with a speed range of: 140, 250, 380, 500, 580, 850, 1250, 1960 rpm. Equipped with an MK3 spindle mount, it ensures stability and easy tool replacement. Perfect for professional and hobby use. Characteristics of the WS32BC bench drill: SPINDLE AUTOFEED High spindle stiffness Threading by automatic switching of left-hand rotation IT HAS 8 ROTATION SPEEDS ROTATION SPEED RANGE: 140, 250, 380, 500, 580, 850, 1250, 1960 rpm Left rotation switch The headstock, column, table and column base are made of the highest quality seasoned castings Spindle and gear shafts made of hardened and heat-treated steel High engine power Large spindle stroke Clear control panel U-type spindle cover with limit switch, CE compliant Manually lifted work table with 360° rotation and mounting grooves The belt transmission cover is equipped with a safety limit switch CE certificate Adjustable drill chuck with key and Morse cone mounting A wedge for knocking out a cone Folhjrigaqscdw Eogk Technical parameters of the WS32C metal bench drill MAX. DRILLING DIAMETER IN STEEL 32mm MAX. THREADING DIAMETER IN STEEL M24 COLUMN DIAMETER 100mm SPINDLE TRAVEL 150mm SPINDLE-COLUMN DISTANCE 265mm MAX. SPINDLE-TABLE DISTANCE 390mm MAX. SPINDLE-BASE DISTANCE 745mm SPINDLE MOUNTING MK3 ROTATION SPEED RANGE 140, 250, 380, 500, 580, 850, 1250, 1960 rpm NUMBER OF ROTATIONAL SPEEDS 8 TABLE DIMENSIONS 380 x 400 mm BASE DIMENSIONS 645 x 470 mm MACHINE HEIGHT 1370mm ENGINE POWER 1.1 kW POWER 400V NET WEIGHT 230 kg DIMENSIONS 900 x 500 x 1400 mm

Condition: good (used), Year of construction: 2000, Control: TNC 426M Year of manufacture: 2000 x transverse travel: 2000 mm y vertical adjustment: 1600 mm z table longitudinal travel: 1500 mm Drilling spindle diameter: 110 mm Clamping area of the table: 1250 x 1600 mm Table load capacity: 6000 kg Fgoljxyh Nwshcdw Esk Laubender GmbH 97461 Hofheim

Condition: used, Table Drilling and Thread Cutting Machine IXION Type BT 15 GL Machine no.: Year of manufacture approx. 1975 Drilling capacity: 15 mm Spindle mount: Taper B 16 Thread cutting range: M 2.5 to M10 Folhcdowk Nxqsw Eogk Throat depth: 200 mm Quill stroke: 90 mm Table size: 285 x 220 mm Column diameter: Ø 75 mm Spindle speed: 320–1600 rpm, 4 steps Motor power: 0.55 kW Power connection: 380 Volt, 50 Hz - Spindle speed adjustable in 4 belt stages - Equipped with FAHRION GH 10 tapping attachment - With thread pitch guide bush, operation without guide bush also possible - Drill head height adjustment via hand crank - Column lowers from table plate for drill head height adjustment Required space (L x W x H): 650 x 420 x 900 mm Weight: 86 kg Good condition

Condition: used, Year of construction: 1980, table length 550 mm table width 550 mm table swivelabel +/- 90 ° no. of flutes 4 weight of the machine ca. 600 kg Fgolhcjgvi I Asdw Ejk +++++ Please note: The machine is dismantled and ready for loading. It is not possible to show it under power or make a video. Our offer includes already the best pictures. So we don’t have and won’t send additional pictures. +++++

Condition: excellent (used), Year of construction: 2000, operating hours: 59,458 h, functionality: fully functional, machine/vehicle number: 1926, travel distance X-axis: 3,500 mm, travel distance Y-axis: 2,500 mm, travel distance Z-axis: 1,250 mm, table width: 1,800 mm, table length: 2,200 mm, table load: 15,000 kg, overall weight: 48,000 kg, spindle speed (min.): 5 rpm, spindle speed (max.): 2,500 rpm, power: 48 kW (65.26 HP), quill diameter: 130 mm, quill travel distance: 630 mm, Equipment: cabin, rotational speed infinitely variable, Technical Specifications Fjlhcdwoxyu Dze Ejgk X-axis travel: 3,500 mm Y-axis travel: 2,500 mm Z-axis travel: 1,250 mm Table size: 1,800 × 2,200 mm Table load capacity: 15,000 kg Spindle speed (max): 2,500 rpm Spindle diameter: 130 mm Control: HEIDENHAIN TNC 426 Number of axes: 5 Automatic tool changer: 60 positions Tool holder: ISO 50 Operating Hours Machine on-time: 59,458 h Spindle running hours: 23,258 h Equipment & Features Operator's cabin Complete machine documentation included

Condition: excellent (used), Year of construction: 1985, machine/vehicle number: 46078-02/9, A well-maintained table-type boring mill WMW UNION model: BFT 80/3-1, machine no.: 46078-02/9, year of manufacture: 1985, with vertical milling head. Spindle diameter: 90 mm; tool holder: ISO 40; boring spindle travel (W): 710 mm; headstock travel (Y): 2100 mm; longitudinal slide travel: 1600 mm; cross slide travel: 1000 mm; table size: 1000x1120 mm. Fslhcdjxw H Adjw Esgk

Condition: new, Year of construction: 2025, The WS20 table drill with a reinforced structure is a general-purpose drill for performing operations such as drilling, reaming, countersinking, threading (using special holders for tapping tools). Drills enable drilling and threading with multi-spindle holders. The drill is characterized by high efficiency, precision of operations, low noise level, wide range of rotational speeds, centralized control panel facilitating work on the machine and ease of use. Machine characteristics SPINDLE AUTOFEED High spindle stiffness Threading by automatic switching of left-hand rotation Left rotation switch The headstock, column, table and column base are made of the highest quality seasoned castings Spindle and gear shafts made of hardened and heat-treated steel High engine power Large spindle stroke Clear control panel U-type spindle cover with limit switch, CE compliant Manually lifted work table with 360° rotation and mounting grooves The belt transmission cover is equipped with a safety limit switch CE certificate Adjustable drill chuck with key and Morse cone mounting A wedge for knocking out a cone Technical data MAX. DRILLING DIAMETER IN STEEL 20mm MAX. THREADING DIAMETER IN STEEL M16 COLUMN DIAMETER 85mm SPINDLE TRAVEL Fgjlhcdworif T Dj Eek 135mm SPINDLE-COLUMN DISTANCE 260mm MAX. SPINDLE-TABLE DISTANCE 366 mm MAX. SPINDLE-BASE DISTANCE 678mm SPINDLE MOUNTING MK2 ROTATION SPEED RANGE 280-1875 rpm NUMBER OF ROTATIONAL SPEEDS 5 TABLE DIMENSIONS 300 x 320 mm BASE DIMENSIONS 376 x 566 mm MACHINE HEIGHT 1245 mm ENGINE POWER 1.1 kW POWER 400V NET WEIGHT 179 kg DIMENSIONS 800 x 450 x 1250 mm Optional equipment cooling system

Condition: used, Bench drilling and tapping machine FLOTT type TBZ 15 GL Serial no. 32177027 Year of manufacture 1986 Drilling capacity 15 mm Spindle holder MK2 throat 195 mm Pinol stroke 80 mm Table size 275 x 200 mm Column diameter 70 mm Spindle speed 80 - 4500 rpm 18 steps Motor power 0.55 + 0.75 kW Mains connection 380 Volt, 50 Hz - 6 belt speeds from the motor and 2 belt speeds to the drill spindle 2 motor speeds - 3 guide cartridges 0.7mm + 0.8mm and 28G available - Drill head height adjustment via crank with rack and pinion on the column - Original metal base Space requirement L x W x H 700 x 350 x 1850 mm Fgelhcjdzp S Nedw Eok Weight approx. 150 kg good condition

Condition: new, Year of construction: 2025, The WS20 table drill with a reinforced structure is a general-purpose drill for performing operations such as drilling, reaming, countersinking, threading (using special holders for tapping tools). Drills enable drilling and threading with multi-spindle holders. The drill is characterized by high efficiency, precision of operations, low noise level, wide range of rotational speeds, centralized control panel facilitating work on the machine and ease of use. Machine characteristics High spindle stiffness Threading by automatic switching of left-hand rotation Left rotation switch The headstock, column, table and column base are made of the highest quality seasoned castings Spindle and gear shafts made of hardened and heat-treated steel High engine power Large spindle stroke Clear control panel U-type spindle cover with limit switch, CE compliant Manually lifted work table with 360° rotation and mounting grooves The belt transmission cover is equipped with a safety limit switch CE certificate Adjustable drill chuck with key and Morse cone mounting A wedge for knocking out a cone Technical data MAX. DRILLING DIAMETER IN STEEL Fslhjrif Trscdw Esgk 20mm MAX. THREADING DIAMETER IN STEEL M16 COLUMN DIAMETER 85mm SPINDLE TRAVEL 135mm SPINDLE-COLUMN DISTANCE 260mm MAX. SPINDLE-TABLE DISTANCE 366 mm MAX. SPINDLE-BASE DISTANCE 678mm SPINDLE MOUNTING MK2 ROTATION SPEED RANGE 280-1875 rpm NUMBER OF ROTATIONAL SPEEDS 5 TABLE DIMENSIONS 300 x 320 mm BASE DIMENSIONS 376 x 566 mm MACHINE HEIGHT 1245 mm ENGINE POWER 1.1 kW POWER 400V NET WEIGHT 179 kg DIMENSIONS 800 x 450 x 1250 mm Optional equipment cooling system

Condition: new, Year of construction: 2025, The WS16 table drill with a reinforced structure is a general-purpose drill for performing operations such as drilling, reaming, countersinking, threading (using special holders for tapping tools). Drills enable drilling and threading with multi-spindle holders. The drill is characterized by high efficiency, precision of operations, low noise level, wide range of rotational speeds, centralized control panel facilitating work on the machine and ease of use. Machine characteristics High spindle stiffness Threading by automatic switching of left-hand rotation Left rotation switch The headstock, column, table and column base are made of the highest quality seasoned castings Spindle and gear shafts made of hardened and heat-treated steel High engine power Large spindle stroke Clear control panel U-type spindle cover with limit switch, CE compliant Manually lifted work table with 360° rotation and mounting grooves The belt transmission cover is equipped with a safety limit switch CE certificate Adjustable drill chuck with key and Morse cone mounting A wedge for knocking out a cone Technical data MAX. DRILLING DIAMETER IN STEEL 16mm MAX. THREADING DIAMETER IN STEEL M10 COLUMN DIAMETER 70mm Fgelhcsrif S Rjdw Eok SPINDLE TRAVEL 100mm SPINDLE-COLUMN DISTANCE 193mm MAX. SPINDLE-TABLE DISTANCE 330mm MAX. SPINDLE-BASE DISTANCE 613mm SPINDLE MOUNTING MK2 ROTATION SPEED RANGE 480-1875 rpm NUMBER OF ROTATIONAL SPEEDS 5 TABLE DIMENSIONS 265 x 285 mm BASE DIMENSIONS 360 x 480 mm MACHINE HEIGHT 1130mm ENGINE POWER 1.1 kW POWER 400V NET WEIGHT 131.5 kg DIMENSIONS 600 x 400 x 1150 mm Optional equipment cooling system

Condition: new, Year of construction: 2025, The W16 table drill is characterized by a rigid structure and great performance while maintaining small size. It has threading functions and a swivel work table with adjustable height. It is a machine that combines power and precision, which is important in various applications. Machine description Threading function Automatic change of the direction of spindle rotation during threading Manual change of direction of rotation using a foot lever High spindle stiffness Setting the required drilling/tapping depth The drive is transmitted via a belt transmission Height-adjustable work table, tiltable from -45° (left) - +45° (right), with the ability to rotate 360° on the column The base is equipped with 14 mm wide T-slots The belt transmission cover is equipped with a safety limit switch No vice included! Technical parameters Max. drilling diameter 16 mm Max. spindle quill extension 100 mm Fgjlhcsrif Iusdw Eek MK2 spindle cone Spindle speeds 480, 800, 1400, 2440, 4100 rpm The distance of the spindle axis from the column is 193 mm Table dimensions 200x230 mm Base dimensions 528x360 mm Max. distance of the spindle tip to the table 315 mm Max. distance of spindle tip to base 556 mm Table rotation range in the horizontal axis ±45° Table rotation range around the column is 360° Motor power 750 W / 400V Weight 90 kg Included: B18 self-clamping drill chuck MK2 drill chuck shank