Used Okuma Lb 9 for sale (227)

Condition: used, Year of construction: 2016, functionality: limited functionality, machine/vehicle number: MW127, Technical characteristics: Work Area - Maximum turning diameter: 300 mm - Maximum workpiece length: 276 mm - X-axis travel: 250 mm / Rapid traverse X: 24 m/min - Z-axis travel: 460 mm / Rapid traverse Z: 24 m/min - W-axis travel: 520 mm / Rapid traverse Z: 24 m/min Main Spindle - Spindle nose: A2-8 Fpedexxihfjpfx Al Ssn - Max. speed: Left spindle 3000 rpm - Power at 100% duty cycle: Left spindle - 15 kW / Right spindle - 7.5 kW - Max. swing over bed: 520 mm - C-axis indexing accuracy: 0.001° - Bar capacity: Left spindle - 80 mm / Right spindle - 53 mm Counter-Spindle: - Spindle speed: 6000 rpm - Max. bar diameter: 53 mm - C-axis indexing accuracy: 0.001° - Travel: 520 mm Tool Holder with Driven Tools - Tool interface: Okuma interface - Number of tool stations: 12-position lower turret, all positions driven - Max. speed: 4500 rpm / Milling motor power: 4.5 kW Electrical Equipment - Operating voltage: 400V 3-phase, fused at 151A - Connected load: 22.5 kVA Machine Dimensions - Dimensions (L×W×H): 3200 × 2200 × 1900 mm - Weight: 5500 kg Main Features and Capabilities - Horizontal design: optimized chip evacuation, parts catcher and custom-made parts conveyor - Additional emulsion tank with 10 bar pressure for cutting tool cooling - CNC control: OSP-P300L-R - Chip conveyor - Fire protection system - Tool measuring system (Q Setter) - Broken tool detection: Load force auto-learning analyzer controlled by OSP-P300L-R - Part detection at counter spindle: low-pressure compressed air gauges - Spindle cooling system - Documentation: Available electronically and in printed format Machine Status: Currently operating with main spindle only - sub spindle requires repair OPTIONAL: Bar feeder: TopAutomazione model Fu352 SX - Bar feeder dimensions (L×W×H): 3500 × 800 × 1200 mm - Weight: 1500 kg

Condition: like new (used), Year of construction: 2022, operating hours: 521 h, functionality: fully functional, machine/vehicle number: L3M0474, turning length: 500 mm, turning diameter: 300 mm, total height: 2,210 mm, total length: 3,950 mm, total width: 2,260 mm, overall weight: 5,680 kg, Equipment: documentation/manual, used Okuma lathe As-new, well-maintained condition 521 operating hours 347 spindle hours Fpjdpfx Alsy Rx Tds Son

Condition: ready for operation (used), Okuma DC-S1A DC power supply for 4 axes, CZ-270C, serial number as shown in the photo, used, with normal signs of wear, 100% functional. Fpjdpfx Aoi Ecanjl Sen

Condition: used, Year of construction: 2017, functionality: limited functionality, machine/vehicle number: MW149, Technical specifications: Work Area - Maximum turning diameter: 300 mm - Maximum workpiece length: 276 mm - X-axis travel: 250 mm / Rapid traverse in X: 24 m/min - Z-axis travel: 460 mm / Rapid traverse in Z: 24 m/min - W-axis travel: 520 mm / Rapid traverse in Z: 24 m/min Main Spindle - Spindle nose: A2-8 - Maximum speed: Left spindle 3000 rpm - Continuous power (100% duty cycle): Left spindle – 15 kW / Right spindle – 7.5 kW - Maximum swing over bed: 520 mm - C-axis indexing accuracy: 0.001° - Bar capacity: Left spindle – 80 mm / Right spindle – 53 mm Sub-Spindle (Counter Spindle) - Spindle speed: 6000 rpm - Maximum bar diameter: 53 mm - C-axis indexing accuracy: 0.001° - Travel: 520 mm Turret with Driven Tools - Tool interface: Okuma interface - Number of stations: 12-position lower turret, all driven stations - Maximum speed: 4500 rpm, Milling motor power: 4.5 kW Electrical System - Operating voltage: 400V 3-phase, fuse protection 151A - Connected load: 22.5 kVA Dimensions - Machine dimensions (L×W×H): 3200 × 2200 × 1900 mm - Weight: 5500 kg Main Features and Capabilities: - Horizontal design for optimal chip evacuation - Parts catcher and custom-made parts conveyor strip - Additional emulsion tank with 10 bar pressure for cutting tool cooling Fpodpfsxxiiiex Al Son - CNC control: OSP-P300L-R - Chip conveyor - Fire protection system - Tool measurement system (Q SETTER) - Broken tool detection: Load force auto learning analyzer, controlled by OSP-P300L-R - Part detection at sub spindle with low-pressure compressed air gauges - Spindle cooling system - Documentation: available electronically and as manual Option: Bar feeder: TopAutomazione FU352SX - Bar feeder dimensions (L×W×H): 3500 × 800 × 1200 mm - Weight: 1500 kg Machine status: Machine operational only with main spindle – sub spindle requires repair.

Condition: ready for operation (used), Okuma DC power supply for 6 axes, PCB with part number E4809-436-002-A, used, shows normal signs of wear, 100% functional. Fodpfei Ecakex Al Sjpn

Condition: used, Year of construction: 2008, Technical details: max. turning diameter: 350 mm turning length: 1040 mm control: OSP E 100 L Fanuc greates pass round over bed: 550 mm Max. distance between centres: 1200 mm max. workpiecediameter: 550 mm Traverse X-Axis 1: 270 Traverse X-Axis 2: 230 mm Traverse Y-Axis 1: 120 (±60) mm Traverse Z-Axis 1: 930 mm Traverse Z-Axis 2: 920 mm Spindle 1 Power: 22 / 15 kW Spindle 1 RPM: 5000 1/min spindle nose: JIS A2-8 bar material dia.: 65 mm C-Axis: 0,001° Number of Turrets: 2 Turret No.1 stations / rotary tools: 12/12 VDI 40 Turret 1 tool RPM: 4500 1/min Turret 1 power rotary tools: 7.0 / 3,3 kW Turret No.2 stations / rotary tools: 12/12 VDI 40 Turret 2 tool RPM: 4500 1/min Turret 2 power rotary tools: 7.0 / 3,3 kW rapid traverse X-axis: 30 m/min rapid traverse Y-axis: 26 m/min rapid traverse Z-axis: 40 m/min total power requirement: 33 kVA weight of the machine ca.: 10 t dimensions of the machine ca.: 7,0 x 2,3 x 2,3 m Accerories Chip conveyor part counter total counter tool setting Signal lamp 3 colors spindle load monitor B Spindle 1 Chuck 300 mm CNC Turning-and Milling Center The Okuma LT 300 MY has 2 turrets, the upper turret has Y-axis with milling function, the lower turret has milling function. It has main- and subspindle. This allows synchronized machining using 2 turrets. Fjdpfx Ajz Ig Sqsl Sepn There is an Interlit paperfilter/high pressuire system with the machine with coolant cooler. There are 7 identical machines available, all in very good and well maintained condition. *

Condition: ready for operation (used), Okuma Opus 5000 II Main Board II A E4809-045-086-A, serial number as shown in the photo, used, shows normal signs of wear, 100% functional, scope of supply as per the photos. Fpodpfx Aloi Ecayj Sjn

Condition: ready for operation (used), Okuma Opus 5000 II Main Board II A, part number E4809-045-086-A / 1911-1509-44-90, serial number as shown in the photo, used, with normal signs of wear, 100% functional, scope of supply as per photos. Fpsdpfxji Eca Do Al Sen

Condition: good (used), Year of construction: 2005, functionality: fully functional, turning length: 700 mm, turning diameter: 210 mm, spindle speed (max.): 5,000 rpm, overall weight: 7,000 kg, Equipment: documentation/manual, rotational speed infinitely variable, Max.: 210 mm Bench turning diameter: 400 mm Max. machinable length: 700 mm X/Z travel: 192/700 mm Stroke against spindle (W-axis): 730 mm C-axis: 0.001° Rapid traverse X/Z: 30/32 m/min Main spindle speed: 5000 rpm Motor: 11/7.5 kW Fedezhwnrepfx Al Sspn 2 turrets: 12 stations Machine dimensions: 2700 x 2000 x 1980 mm Machine weight: 7000 kg Equipment: 2 turrets, 12 stations, VDI 30 Measuring tool IRCO SiMag

Condition: used, Year of construction: 2015, overall weight: 5,500 kg, OKUMA OSP-P300L-R control unit, with TOP AUTOMAZIONI XFS370 bar feed system. Workholding and tooling are not included. Fedpszxrx Tofx Al Sspn AVAILABLE IN NOVEMBER 2026.

Condition: good (used), Year of construction: 2004, functionality: limited functionality, travel distance X-axis: 560 mm, travel distance Y-axis: 610 mm, travel distance Z-axis: 625 mm, rapid traverse X-axis: 60 m/min, rapid traverse Y-axis: 60 m/min, rapid traverse Z-axis: 60 m/min, controller manufacturer: Okuma, controller model: OSP-E100M, workpiece length (max.): 600 mm, workpiece width (max.): 710 mm, workpiece weight (max.): 400 kg, total height: 2,760 mm, total length: 4,535 mm, total width: 2,415 mm, table width: 400 mm, table length: 400 mm, table load: 400 kg, overall weight: 10,000 kg, spindle speed (max.): 8,000 rpm, distance table center to spindle nose: 710 mm, spindle motor power: 15,000 W, spindle nose: BT40, number of spindles: 1, number of slots in tool magazine: 40, input voltage: 400 V, type of input current: three-phase, Equipment: chip conveyor, rotational speed infinitely variable, Okuma Space Center MA400HA Horizontal Machining Centre Machine Type: CNC Horizontal Machining Centre Year: 2004 Control: OSP-E100M Axes: 4 No. of Pallets: 2 Condition: Good - There is an issue with the pallet changer. Fjdpfowcd Evjx Al Sjpn Includes Cromar Swarf Conveyor Coolant Filtration System Technical Specifications Pallets: 2 Size of Pallets: 400 x 400mm X Axis Travel: 560mm Y Axis Travel: 610mm Z Axis Travel: 625mm B Axis Travel: 360 Deg Rapid Traverse: 60m/min Spindle Centre to Pallet Top: 50 - 660mm Spindle Nose to Pallet Centre: 85 - 710mm Max Pallet Load: 400kg Max Workpiece Dimensions: 600 x 710mm Tool Pockets: 40 Spindle Taper: BT40 Spindle Power: 15kW Spindle Speed: 8,000rpm Machine Dimensions: 4535 x 2415 x 2760mm Machine Weight: 10,000kg Notes: *Specifications are given in good faith but not guaranteed*

Condition: good (used), Year of construction: 2006, functionality: fully functional, turning length: 900 mm, turning diameter: 450 mm, Used Okuma Multus B300-W multi-function CNC lathe including newer Kuka robot 70 kg (1–2 years old), without handling set-up. Fedpeyux S Hsfx Al Sepn

Condition: excellent (used), Year of construction: 2010, functionality: fully functional, CNC turning and milling center Okuma Multus B400 1SC-1500 Control system: OSP-P200L Year of manufacture: 11/2010 Fpjdpjzwl U Ssfx Al Sjn Internal machine number: 61 X-axis: 690 mm Y-axis: +115 / -115 = 230 mm Z-axis: 1,545 mm B-axis: up to 225°, positioning in 0.001° C-axis: 360° / 0.001° Turning length: 1,500 mm Turning diameter: 710 mm Spindle bore: 110 mm Tool holder: HSK 63 Tool magazine: 40 positions Equipment: - Chip conveyor - 3-jaw chuck SMW KNCS-N-340-117 - Paper band filter system ISF 540/6670 - One Touch IGF - Tailstock - Touch setter

Condition: repair required (used), Year of construction: 2013, operating hours: 11,000 h, functionality: limited functionality, turning length: 1,000 mm, turning diameter: 350 mm, spindle bore: 68 mm, spindle speed (max.): 3,800 rpm, overall weight: 6,500 kg, chuck outer diameter: 250 mm, The machine has a crack in the turret housing and in the cross-slide. Although everything is operational, due to this damage it is better suited as a source for spare parts. All attachments, servomotors, coolant pump, control unit, chip conveyor, etc. are in impeccable condition. Fpjdpfjynf Nfsx Al Sen

Condition: good (used), Year of construction: 2000, functionality: fully functional, travel distance X-axis: 560 mm, travel distance Y-axis: 460 mm, travel distance Z-axis: 450 mm, Equipment: chip conveyor, documentation/manual, Machine Name - Okuma Machine Model - MX45VAE Y.O.M 2000 Descriptions - OSP 700M Spindle Speeds 7000 rpm BT40 taper Table Size 1000 mm x 460mm X – Axis Travel 560mm Y – Axis Travel 460mm Z – Axis Travel 450mm 20 station ATC Renishaw tool setter Fsdpfx Aezair Ujl Sspn Renishaw work probe Coolant system and conveyor 2 x identical machines available

Condition: ready for operation (used), Okuma OPUS 5000 GHP power supply, 5000T, serial number: 00198, see photo for serial number. Used, shows normal signs of wear, 100% functional. Fsdpei Ecarjfx Al Sspn

Condition: excellent (used), Year of construction: 2013, operating hours: 5,785 h, Okuma Genos L300e-MY turning center Fpjdpfx Aljzat Tvs Son Year: 2013 Technical details: Control OSP P300L-R Turning diameter 340 mm Turning length 1020 mm Spindle bore diameter 65 mm Spindle Speed 25 - 3000 1/min Spindle motor 15/11 kW Movement X-axis 235 mm Movement Y-axis +50 / -50 mm Movement Z-axis 1074 mm Minimum indexing C-Axis main Spindle 0,001 ° Number of tools on turret 12 Spindle speed driven tools 45 - 4500 1/min Number of driven tools 12 position Tool Taper VDI40 Spindle motor driven tools 7/3,3 kW Bar feeder SPACESAVER 2210 ( 1500 mm bar lenght, up to 67 mm diameter ) Machine dimensions 4370x2540x2490 mm Weight 7500 kg Accessories/options: - SPACESAVER 2210 barfeeder - swarf conveyor - parts cather - Renishaw tool measuring arm - Driven tool holders - Static tool holders - Hydraulic chuck - Jaws for chuck - Documentations - Dust extractor

Condition: repair required (used), Year of construction: 2015, functionality: not functional, machine/vehicle number: MW137, Technical characteristics: Work Area - Maximum turning diameter: 300 mm - Maximum workpiece length: 276 mm - X-axis travel: 250 mm / Rapid traverse in X: 24 m/min - Z-axis travel: 460 mm / Rapid traverse in Z: 24 m/min - W-axis travel: 520 mm / Rapid traverse in Z: 24 m/min Main Spindle - Spindle nose: A2-8 - Maximum speed: Left 3,000 rpm - Continuous power (100% duty cycle): Left - 15 kW / Right - 7.5 kW - Maximum swing over bed: 520 mm - C-axis indexing accuracy: 0.001° - Bar capacity: Left spindle - 80 mm / Right spindle - 53 mm Counter-Spindle Fpodpfxsxxh Uds Al Son - Spindle speed: 6,000 rpm - Maximum bar diameter: 53 mm - C-axis indexing accuracy: 0.001° - Travel: 520 mm Tool Turret with Driven Tools - Tool interface: Okuma interface - Number of positions: 12 lower turret stations, all driven - Maximum speed: 4,500 rpm; Milling spindle power: 4.5 kW Electrical Equipment - Operating voltage: 400V (3-phase), fuse protection: 151A - Connected load: 22.5 kVA Dimensions - Machine dimensions (L×W×H): 3,200 × 2,200 × 1,900 mm; Weight: 5,500 kg Main Features and Capabilities: - Horizontal design: Optimal chip evacuation, parts catcher + custom-made conveyor belt - Additional emulsion tank with 10 bar pressure for cutting tool cooling - CNC control: OSP-P300L-R - Swarf (chip) extraction conveyor - Fire suppression system - Tool measuring system (Q SETTER) - Broken tool detection: Load monitoring with auto-learning analyzer via OSP-P300L-R - Workpiece detection on counter-spindle: Low-pressure compressed air gauges - Spindle cooling system - Documentation: Electronic and print manual available Optional: - Bar feeder: FMB Model: Turbo 10-72XT/3200/A - Bar feeder dimensions (L×W×H): 3,500 × 800 × 1,200 mm; Weight: 1,500 kg Machine status: NOT OPERATIONAL - X-axis encoder: faulty

Condition: excellent (used), Year of construction: 2023, CNC turning and milling center Okuma Multus B300 II Control system: OSP-P 300SA Year of manufacture: 2023 Internal machine number: 32 Travel distances: Turning length: 900 mm Maximum turning diameter: 630 mm X-axis: 580 mm Y-axis: 160 mm (+80/-80 mm) Z-axis: 935 mm B-axis: 225° (-30° / +195°; 0.001° increments) C-axis: 360° Tool holder: HSK-A 63 Total number of tool positions: 40 Spindle speed: 50 – 5,000 rpm Accessories: Chip conveyor NC-controlled tailstock, MT5 Touch probe High-pressure pump, 40 bar Renishaw probe prepared 3-jaw chuck Kitagawa B212, Ø304 mm Fedpfx Aeyk Uhcsl Sjpn

Condition: like new (used), Year of construction: 2022, operating hours: 1,325 h, functionality: fully functional, Control unit: OKUMA OSP P300LA-e Swing over bed: D450 mm Swing over cross slide: D350 mm Max. turning diameter: 230 mm Max. turning length: 500 mm X-axis travel: 165 mm Z-axis travel: 470 mm Max. spindle speed: 5,000 RPM Drive capacity: 15 / 11 kW (20 min. / continuous) Spindle bore: D62 mm Turret: 12-station Max. tool size: 25x25 mm Tailstock quill taper: MT5 Weight approx.: 3800 kg Dimensions (LxWxH): 2600 x 1830 x 1700 mm Accessories and Equipment - Coolant system - Chip conveyor - 3-jaw chuck D250 mm - Built-in tool presetter arm - Foot pedals Fjdpfx Ajziqp Ssl Sepn - Machine leveling feet - Manuals The machine has very low operating hours and is in like-new condition. Under power in our showroom.

Condition: repair required (used), Year of construction: 2016, functionality: not functional, machine/vehicle number: MW144, Technical characteristics: Work Area - Maximum turning diameter: 300 mm - Maximum workpiece length: 276 mm - X-axis travel: 250 mm / Rapid traverse in X: 24 m/min - Z-axis travel: 460 mm / Rapid traverse in Z: 24 m/min - W-axis travel: 520 mm / Rapid traverse in Z: 24 m/min Main Spindle - Spindle nose: A2-8 - Maximum speed: Left 3000 rpm - Power at 100% duty cycle: Left – 15 kW / Right – 7.5 kW - Maximum swing over bed: 520 mm - C-axis indexing accuracy: 0.001° - Bar capacity: Left spindle – 80 mm / Right spindle – 53 mm Sub-Spindle: - Spindle speed: 6000 rpm - Maximum bar diameter: 53 mm - C-axis indexing accuracy: 0.001° - Travel: 520 mm Tool Turret with Driven Tools - Tool interface: Okuma interface - Number of stations: 12-position lower servo turret, all stations driven - Maximum speed: 4500 rpm - Milling motor power: 4.5 kW Electrical Equipment - Mains voltage: 400V 3-phase - Connected load: 22.5 kVA Dimensions - Machine dimensions (L×W×H): 3200 × 2200 × 1900 mm - Weight: 5500 kg Main Features and Capabilities: - Horizontal design: optimized chip evacuation, parts catcher + custom parts conveyor belt - CNC control: OSP-P300L-R - Chip conveyor - Fire protection system - Tool measurement system (Q SETTER) - Broken tool detection: Load monitoring and automatic force analysis via OSP-P300L-R - Workpiece detection at sub-spindle: Low-pressure compressed air monitoring - Spindle cooling system - Documentation: Electronic / Hard copy available OPTIONAL Fpjdpfoxxidasx Al Ssn Bar feeder: TOP Automazione, model FU 352 - Bar feeder (L×W×H): 3500 × 800 × 1200 mm; Weight: 1500 kg Machine Condition: NOT WORKING - Turret disassembled for repair - X-axis ballscrew to be replaced - Heat exchanger / lubrication unit to be replaced - Hydraulic unit to be replaced - Sub-spindle to be repaired - Spindle position encoder to be replaced - Chip conveyor to be repaired - Set of bar clamping guide and accessory kit - Set of bearings for pusher head

Condition: used, Year of construction: 2006, Okuma Space Centre MA-600HB Horizontal Twin Pallet Machining Centre with Okuma OSP-P200M CNC Control System. Serial No. 1296158 (2006), X Axis = 1,000mm, Y Axis = 900mm, Z Axis 1,000mm, Spindle Nose NT 50, Spindle Speed Std 6,000rpm, Spindle Drive VAC 30/22kw, Pallet Size 630 x 630mm, Max Weight on Pallet 1200kg, Pallet Indexing 1 deg, Pallet Change Time 11 seconds, Max Work Piece Size Ø 1,000 x 900 High, Axis Drives Feed Rate X, Y, Z Axis 1 - 60,000mm/min, Rapid Traverse X, Y, Z Axis 60,000mm/Min, Automatic Toolchanger No. of Tools 40, Floor Space 3,380 x 6,140mm, Machine Weight 24,000kg Approx. Qty of 50 INT Spindle Tools (Back End Only). Country of Origin: Japan Location: These lots are located in Swindon, UK. Unfortunately, there are no loading facilities on-site, dismantling and loading will be at the cost of the purchaser. Fodoz Arzvspfx Al Sspn

Condition: good (used), spindle bore: 260 mm, spindle speed (max.): 900 rpm, travel distance X-axis: 3,200 mm, total height: 3,409 mm, total length: 9,800 mm, total width: 3,609 mm, feed length Z-axis: 530 mm, overall weight: 34,000 kg, CNC Lathe with c-axis Okuma - LU-45M SuperBigBore MACH-ID 9778 Make: Okuma Type: LU-45M SuperBigBore Control: OSP-P200L X-Axis: 3200mm Z-Axis: 530mm Spindle bore:260mm Speedrange: 900Rpm Length: 9800mm Width: 3609mm Height: 3409mm Weight: 34000kg Fedpsztctqefx Al Sepn Please Note: The information on this page has been obtained to the best of our ability and belief, and from the manufacturers where possible. It is given in good faith, but its accuracy can not be guaranteed. Accordingly, it will not form a representation or constitute contractual terms. We advise you to check any vital details!

Condition: ready for operation (used), Okuma BDU-30A Brushless Servomotor Drive Unit with E4809-045-061-D, serial number as shown in the photo, used, with normal signs of wear, 100% functional. Fpedpfei D Naaox Al Son

Condition: ready for operation (used), Year of construction: 2015, operating hours: 500 h, travel distance X-axis: 2,050 mm, travel distance Y-axis: 850 mm, travel distance Z-axis: 750 mm, table load: 2,500 kg, overall weight: 20,500 kg, spindle speed (max.): 6,000 rpm, spindle motor power: 18,500 W, number of slots in tool magazine: 36, number of axes: 3, This 3-axis Okuma Millac 852 VII was manufactured in 2015. It features a robust table size of 2,200 × 850 mm and a maximum table load of 2,500 kg. The machine is equipped with a high-torque spindle motor of 18.5 kW and a rapid traverse of 20,000 mm/min. If you are looking to get high-quality machining capabilities, consider the Okuma Millac 852 VII vertical machining centre we have for sale. Contact us for further details. • Condition: Excellent; approximately 500 cutting hours; near-new condition • Heavy-duty machining center for high material removal rates • Extremely rigid machine structure • Box guideways on all axes; quadruple box guideway system on Y-axis Fsdpfozqcr Iox Al Sspn • Automatic oil lubrication for guideways with machine stop monitoring • Okuma OSP300 control with IGF conversational programming • Parameterized automatic tool collision prevention system • Automatic cutting force, tool load, and spindle torque monitoring • Tool life management and tool usage monitoring • Communication interfaces: USB, PCMCIA, RS-232 • Cutting force: 580 Nm • Chip removal capacity: 540 cm³/min • Spindle speed: 6,000 rpm • Spindle oil cooler • Table size: 2,200 × 850 mm • Rapid traverse: 20,000 mm/min • Tool change time: 0.5 s; chip-to-chip time: 5 s • Machine currently under production; can be inspected under power by an official Okuma technician • Includes documentation: spare parts list, electrical diagrams, programming manual, operation manual • Delivery: Immediate, subject to prior sale Additional equipment • Renishaw tool measuring system • Independent Knoll high-pressure coolant system (70 bar) • 30-micron coolant filtration system • LTA mist extraction system • Rear hinge-type chip conveyor • Large set of BT50 tool holders • Transformer Technical Specification Taper Size BT 50