Used Emco Emcomat Fb-600 Mc for sale (144)

Condition: good (used), Year of construction: 2007, with UniRobot FMB Control: SIEMENS 828D Bed swing: Ø 540 mm Cross slide swing: Ø 360 mm Spindle – tailstock: 680 mm Max. turning diameter: Ø 310 mm Max. part length: 520 mm Max. bar diameter: Ø 65 mm Travel: X = 210, Z = 610 mm Max. chuck size: Ø 254 mm Main spindle: 15/18 kW (100%, 60% duty cycle) Speed range: 60 – 4200 rpm continuously variable Max. torque: 192 Nm C-axis Rapid traverse: 1000 rpm TOOL TURRET 12 stations all driven Mounting: VDI 30 Speed range: 0-5000 rpm Max. drive power: 5 kW Max. torque: 20 Nm Automatic tailstock, hydraulic Travel: 500 mm Internal taper: MK 4 FMB MH5L-XP robot cell With Yaskawa Motoman MH 5 L robot Max. payload: 5 kg Max. working radius: 895 mm Weight: 27 kg Working range: S-axis (rotation): -170° ~ +170° L-axis (lower arm): -65° ~ +150° U-axis (upper arm): -138° ~ +255° R-axis (hand roller): -190° ~ +190° B-axis (joint/articulation): -135° ~ +135° T-axis (hand rotation): -360° ~ +360° With coolant system Chip conveyor, extraction system Hodpfov S Ekyjx Al Sjl Total weight (machine/robotic): approx. 5300 kg

Condition: ready for operation (used), Year of construction: 2012, operating hours: 17,300 h, functionality: fully functional, machine/vehicle number: Q4A124301, travel distance X-axis: 350 mm, travel distance Y-axis: 250 mm, travel distance Z-axis: 300 mm, spindle speed (max.): 10,000 rpm, number of slots in tool magazine: 20, TECHNICAL DETAILS Working Area Travel X-axis: 350 mm Travel Y-axis: 250 mm Travel Z-axis: 300 mm Min. distance spindle nose – table: 120 mm Max. distance spindle nose – table: 420 mm Table Clamping surface: 500 x 300 mm T-slots (number/size/pitch): 5x 45x100 mm Max. table load: 100 kg Table – floor distance: 880 mm Spindle Speed range: 50 – 10,000 rpm Spindle motor power (S6): 8.5 kW Spindle torque (S6): 41 Nm Tool holder: ISO 30 Tool Change Number of tool stations: 20 Max. tool diameter: 63 mm (without adjacent tools) Max. tool length: 200 mm Max. tool weight: 5 kg Tool change time: 2.5 s MACHINE DETAILS Dimensions & Weight Machine dimensions (L x W x H): 1,600 x 1,700 x 1,980 mm Hedoxa Araopfx Al Ssl Weight: 1,970 kg Power supply: 9 kVA Operating hours: 17,300 h EQUIPMENT 30 holders 2 Gressel vices Note: The machine will remain powered until 21.09.2025.

Condition: ready for operation (used), Year of construction: 2007, operating hours: 6,615 h, functionality: fully functional, machine/vehicle number: R2EV3403, turning length: 310 mm, turning diameter: 220 mm, spindle speed (max.): 6,300 rpm, turning diameter over bed slide: 430 mm, bar passage: 45 mm, TECHNICAL DETAILS Work Area Swing over bed: 430 mm Max. turning diameter: 220 mm Max. turning length: 310 mm Max. bar capacity: 45 mm Distance between centers: 687 mm Carriage Travel X-axis travel: 160 mm Z-axis travel: 310 mm Main Spindle Spindle nose to DIN: 55026 KK5 Front spindle bearing diameter: 80 mm Hollow clamping cylinder max. through bore: 45 mm Max. chuck size: 160 mm Speed range (infinitely variable): 0–6,300 rpm Max. torque: 78 Nm C Axis (Rotary Axis) Resolution: 0.001° Hodexvrv Tjpfx Al Sel Spindle indexing (disc brake, for driven tools): 0.01° Feed Drives Feed force X: 4 N Feed force Z: 6 N Rapid traverse speed X: 20 m/min Rapid traverse speed Z: 24 m/min Acceleration time from 0 to rapid traverse X/Z: 0.2 s Positioning spread P₉ as per VDI 3441 in X/Z: 3 / 3 µm Tool System Tool holders to DIN: 69880 VDI30 Tool cross section for square shank tools: 20 x 20 mm Shank diameter for boring bars: Ø32 mm Number of tool stations / powered (option): 12 / 6 Turret indexing time: 0.14 s MACHINE DETAILS Total power requirement: 17 kW Dimensions & Weight Footprint: 2.25 x 1.63 x 1.94 m Machine weight: 3.3 t Operating hours: 6,615 h EQUIPMENT - Integrated holding brake for driven tools - Disc turret with direction logic - AC motors on X and Z axes

Condition: ready for operation (used), Year of construction: 2000, functionality: fully functional, machine/vehicle number: R6A N3602, turning length: 520 mm, turning diameter: 360 mm, overall weight: 3,800 kg, TECHNICAL DETAILS Turning diameter: 360 mm Hjdpfexvrruox Al Sjl Turning length: 520 mm MACHINE DETAILS Total power requirement: 20 kW Dimensions & Weight Required space: 3 x 2 x 2 m Machine weight: 3.8 t

Condition: ready for operation (used), Year of construction: 2001, functionality: fully functional, machine/vehicle number: R2AP3901, turning length: 700 mm, turning diameter: 220 mm, travel distance X-axis: 160 mm, turning diameter over bed slide: 430 mm, workpiece length (max.): 510 mm, TECHNICAL DETAILS Turning diameter: 220 mm Turning length: 700 mm / 665 mm Hsdpfx Aexvrn Nsl Sel Swing diameter over bed: 430 mm Max. part length: 510 mm X-axis travel: 160 mm Spindle bore diameter: 45 mm MACHINE DETAILS Total power requirement: 17 kW Dimensions & Weight Required space approx.: 2.63 x 1.98 x 1.94 m Machine weight approx.: 2.6 t

Condition: ready for operation (used), Year of construction: 2001, functionality: fully functional, machine/vehicle number: R2AP3901, turning length: 700 mm, turning diameter: 220 mm, travel distance X-axis: 160 mm, travel distance Z-axis: 310 mm, rotational speed (max.): 6,300 rpm, total height: 1,940 mm, total length: 1,980 mm, total width: 2,630 mm, TECHNICAL DETAILS Working Area Swing diameter over bed: Ø430 mm Distance between centers with standard tailstock: 700 mm Maximum turning diameter: Ø220 mm Maximum workpiece length: 510 mm Maximum bar capacity: Ø45 mm Cross-slide travel X: 160 mm Cross-slide travel Z with manual tailstock: 310 mm Hsdpfowxw Aaex Al Sjl Main Spindle Spindle mount according to DIN 55026: A5 Spindle outer diameter at front bearing: Ø80 mm Solid clamping cylinder with drawbar for chuck parts up to: Ø165 mm Hollow clamping cylinder with draw tube max. through-hole: Ø45 mm Maximum chuck size: Ø160 mm Main Spindle Drive AC motor, power (100% / 40% duty cycle) with integrated holding brake: 9 / 13 kW Speed range (infinitely variable): 0–6,300 rpm Max. torque: 78 Nm C-Axis (Rotary Axis) Rotary axis resolution: 0.001° Rapid traverse: 100 rpm Feed Drives AC motors for X and Z axis feed force X/Z: 4,000 / 6,000 N Rapid traverse speed X/Z: 20 / 24 m/min Acceleration time from 0 to rapid traverse X/Z: 0.2 s Position scatter Ps according to VDI 3441 in X/Z: 3 / 5 µm Tool System Disk turret with directional logic Tool holders according to DIN 69880: VDI 30 Tool cross-section for square tools: 20 x 20 mm Shank diameter for boring bars: Ø32 mm Number of tool stations: 12 Turret indexing time: 0.14 s Standard Tailstock Travel: 460 mm Quill stroke: 120 mm Quill diameter: Ø60 mm Internal taper for live center: MT4 Quill thrust: 5,000 N MACHINE DETAILS Footprint: 2.63 m x 1.98 m x 1.94 m Space requirement: 3.0 x 1.92 m Height: 1.88 m Weight: 3.8 t

Condition: ready for operation (used), Year of construction: 2000, functionality: fully functional, machine/vehicle number: R6AN3701, turning length: 520 mm, turning diameter: 360 mm, travel distance X-axis: 210 mm, travel distance Z-axis: 610 mm, rotational speed (max.): 6,300 rpm, total height: 1,872 mm, total length: 1,941 mm, total width: 3,074 mm, Equipment: rotational speed infinitely variable, TECHNICAL DETAILS Working Area Swing diameter over bed: 600 mm Swing diameter over cross slide: 360 mm Slide travel X/Z: 210 / 610 mm Distance main spindle – tailstock: 805 mm Max. workpiece size with tailstock: Ø160 x 520 mm Main Spindle Spindle interface according to DIN 55026: A5 Spindle external diameter at front bearing: Ø80 mm Through-hole hydraulic chuck with drawbar for workpieces up to: Ø160 mm Hollow clamping cylinder with drawtube max. passage: Ø45.5 mm Max. chuck size (spindle size Ø45): Ø160 mm Tailstock Internal taper: MT4 Hodpfx Alewxw H Se Sel Tailstock travel: 500 mm Max. tailstock force (hydraulically controlled): 8,000 N Feed Drives Feed force X/Z: 5,000 / 7,000 N Rapid traverse speed X/Z: 24 / 24 m/min Acceleration time from 0 to rapid traverse X/Z: 0.2 s Positioning accuracy range X/Z/Z₂: 3 / 5 / 4 µm Main Spindle Drive AC motor power 100/40% duty cycle: 9 / 13 kW Speed range (stepless): 0-6,300 rpm Max. torque: 89 Nm MACHINE DETAILS Dimensions (W x D x H): 3074 mm x 1941 mm x 1872 mm

Condition: ready for operation (used), Year of construction: 2007, functionality: fully functional, machine/vehicle number: R2EV3502, turning length: 310 mm, turning diameter: 220 mm, travel distance X-axis: 160 mm, travel distance Z-axis: 310 mm, rotational speed (max.): 6,300 rpm, total length: 1,630 mm, total width: 2,250 mm, overall weight: 3,300 kg, bar passage: 45 mm, Equipment: rotational speed infinitely variable, TECHNICAL DETAILS Swing diameter over bed: ø 430 mm Maximum turning diameter: ø 220 mm Maximum turning length: 310 mm Maximum bar capacity: ø 45 mm Distance between centers (spindle nose - tailstock center): 687 mm Carriage Travel Carriage travel X-axis: 160 mm Carriage travel Z-axis: 310 mm Main Spindle Hedpfxjwxwvaj Al Sol Spindle connection according to DIN 55026: KK5 Spindle outer diameter at front bearing: ø 80 mm Main Spindle Drive AC motor, power (100%/40% duty cycle): 9/13 kW With integrated holding brake for driven tools Speed range (infinitely variable): 0–6,300 rpm Max. torque: 78 Nm C-Axis (Rotational Axis) C-axis resolution: 0.001° Input for Sinumerik/Fanuc drives: 1,000 / 100 rpm Spindle indexing (disc brake, for driven tools): 0.01° Feed Drives AC motors in X and Z axis Feed force X/Z: 4,000 / 6,000 N Rapid traverse speed X/Z: 20 / 24 m/min Acceleration time from 0 to rapid traverse X/Z: 0.2 s Position dispersion Pₛₙ according to VDI 3441 in X/Z: 3 / 3 µm Tool System Disc turret with directional logic Tool holders according to DIN 69880: VDI 30 Tool interface for square tools: 20 × 20 mm Shank diameter for boring bars: ø 32 mm Number of tool stations: 12 Turret indexing time: 0.14 s MACHINE DETAILS Total connected load: 17 kW Machine weight: approx. 3.3 t Space requirement: 2.25 x 1.63 x 1.94 m

Condition: excellent (used), EMCO TURN 365 – CNC Turning Center Hedpfsxiy Ukox Al Sol For sale: EMCO TURN 365 CNC turning center, in excellent technical condition, immediately available and ready for operation. Year of manufacture: 2000 EMCO Turn 368/65 Operating hours: 53,000 Year: 2000 Chip conveyor Drip tray Maximum swing diameter over bed [mm]: ø600 Swing diameter over cross slide [mm]: ø360 Maximum turning diameter [mm]: ø310 Maximum workpiece length [mm]: 520 Maximum bar capacity [mm]: ø65 Distance between centers (spindle nose – tailstock center) [mm]: 669 X-axis travel [mm]: 210 Z-axis travel [mm]: 610 AC motor power (Sinumerik / Fanuc) with integrated holding brake [kW]: 24.4 / 22 Spindle speed range (stepless) [rpm]: 60 – 3200 Max. torque (Sinumerik / Fanuc) [Nm]: 267 / 242 C-axis (rotary axis) on main spindle Rotary axis resolution [°]: 0.001 Rapid traverse speed Siemens / Fanuc [mm/min]: 1000 / 100 Automatic tailstock, hydraulically actuated Tailstock travel [mm]: 500 Max. tailstock force [N]: 8,000 Travel speed [m/min]: approx. 20 Tailstock quill taper: MT 4 Disc turret with directional logic, optionally with driven tools Number of tool stations: 12 Tool holders according to DIN 69880 VDI 30 Tool cross-section for square tools [mm]: 20 × 20 Boring bar diameter [mm]: ø32 Number of driven tool stations: 12 Speed range [rpm]: 0 – 5,000 Max. drive power [kW]: 5 Max. torque [Nm]: 20 • Control: Sinumerik 810D/840D (ShopTurn 6.4) • Machine weight: approx. 4,000 kg • Installation dimensions (L × W × H): approx. 4,000 × 2,000 × 2,000 mm — Condition & Scope of Delivery The machine is in very well-maintained condition. The offer includes comprehensive documentation including operator’s manual. • Inspection possible at any time • Free loading • Delivery by arrangement possible — Contact Maschinenhandel Nord Gerstenstraße 2 17034 Neubrandenburg 📞 All prices subject to VAT. Errors and alterations excepted.

Condition: new, Year of construction: 2023, functionality: fully functional, NEW PLANT / READY FOR OPERATION / IMMEDIATELY AVAILABLE HT 45 SM2 / SIEMENS - with driven tools CNC lathe for the complete machining of turned and milled parts with 2 spindles, 2 tool systems, 5 linear axes and 2 rotary axes, integrated spindle motors on main and counter and counter spindle (water-cooled), preloaded roller guides. Drive power: Main spindle - 15 kW Counter spindle - 15 kW Speed range: Main spindle 0 - 7000min-1 Counter spindle 0 - 7000min-1 Spindle connection (DIN 55026): Main spindle: KK 5 (max. bar capacity ø 45mm) Counter spindle: KK5 Includes: - Hollow clamping cylinder on the main spindle - Draw tube for main and counter spindle - Mechanical spindle brake (main/counter spindle) - Part ejector and flushing through the counter spindle - Control Sinumerik 840D-sl / OPERATE o emcoNNECT/APP-based user interface o 22" multi-touch display o IPC with 240 GB o SHOPTURN dialogue programming o USB interface o Network drive / Ethernet Hsdolxqf Nspfx Al Sel o 3D simulation o and much more - 2x 12-fold tool turret VDI 25 radial with directional logic for up to 2x 12 driven tool stations Swivel speed adjustable with feed switch! Performance data: -Max. 4kW at 2080 rpm -Torque constant 16 Nm -speed range 0-6000 rpm -C-axis for main and counter spindle -TRANSMIT software for simple C-axis programming - Chip conveyor with an ejection height of 1100mm programmable Type "hinged belt" ) - Coolant device integrated in the chip conveyor 2 pcs. High pressure pumps with 14 bar 2 pcs. flushing pumps with 3,7 bar Air gun with spiral hose - LED machine room light - Hydraulic power unit - Documentation

Condition: good (used), Year of construction: 2011, operating hours: 4,700 h, functionality: fully functional, machine/vehicle number: S6CZ1151, spindle bore: 65 mm, spindle speed (max.): 5,000 rpm, spindle motor power: 29,000 W, bar passage: 65 mm, Equipment: bar feeder, documentation/manual, Year: 2011 Operating hours: 4,700 h (increasing) Turning diameter: 65 mm CNC type: Fanuc 18i-TB Number of turrets: 1 Axes: X, Y, Z, and C Number of turret stations: 12 Number of driven stations: 12 Main spindle and sub-spindle speed: 5,000 rpm Main and sub-spindle motor power: 29 kW Dimensions (L × W × H): 3,302.0 × 2,057.4 × 2,032.0 mm Hodpfx Alsxwp I Ae Sel Weight: 5,700 kg Chip conveyor IEMCA MASTER 880r Verso bar feeder (3 m bar + loading magazine) Numerous fixed and driven tool holders included in the sale: _Axial driven tool holder: 3 _Radial driven tool holder: 4 _Swivel driven tool holder 0–90°: 2 _Fixed turning tool holder: 5 _Fixed drilling tool holder: 7 _Cut-off blade holder: 1 2 sets of chucks for jaw passage (main spindle and sub-spindle). The machine is currently in use but can be made available within 4 weeks. The machine is to be collected on site (Saint Pierre en Faucigny). Loading and transport costs are at the buyer’s expense.

Condition: not inspected (used), Year of construction: 2005, functionality: unexamined, machine/vehicle number: S6AT2502, travel distance X-axis: 250 mm, travel distance Y-axis: 40 mm, travel distance Z-axis: 600 mm, rotational speed (max.): 5,000 rpm, number of slots in tool magazine: 12, No minimum price – guaranteed sale to the highest bidder! TECHNICAL DETAILS Travel X-axis: 250 mm Travel Y-axis: mm Travel Z-axis: 600 mm Max. spindle speed: 5,000 rpm Feed force Y-axis: 7,000 N Rapid traverse: 12 m/min DRIVE & PERFORMANCE Max. drive power: 6.7 kW Main spindle speed range: 0–5,000 rpm SUB SPINDLE Chuck diameter: max. 200 mm Speed range: 0–7,000 rpm Travel range: max. 580 mm ELECTRICS Operating voltage: 400 V Frequency: 50–60 Hz Rated current: 85 A MACHINE DETAILS Total height: 2,100 mm Total length: 5,000 mm Total width: 2,000 mm Total weight: 8,000 kg Tool holder: 30 mm Control manufacturer: SIEMENS Control model: SINUMERIK 840D Number of tool magazine positions: 12 EQUIPMENT Continuously variable spindle speed Chip conveyor Hodewvi Euepfx Al Sel With Y-axis and sub spindle Tool turret with 12 stations, all driven Tool holder: VDI 30 Includes 3-jaw chuck (RÖHM, Ø 250 mm)

Condition: good (used), Year of construction: 2002, functionality: fully functional, machine/vehicle number: R6CQ2401, turning diameter over cross slide: 360 mm, spindle bore: 65 mm, spindle speed (max.): 4,000 rpm, travel distance X-axis: 210 mm, travel distance Z-axis: 610 mm, No reserve price - guaranteed sale at the highest bid! TECHNICAL DETAILS Control: Siemens Sinumerik 840 D X-axis travel: 210 mm Z-axis travel: 610 mm Z-axis in rotary axis – resolution: 0.001° Spindle Spindle size: 65 mm diameter Outer spindle diameter of front bearing: 100 mm Swing diameter over bed: 600 mm Swing diameter over cross slide: 360 mm Distances and workpiece sizes Distance between main spindle and tailstock: 805 mm Distance between main spindle and counter spindle: 716 mm Max. workpiece size with tailstock: 200 × 520 mm diameter Counter spindle / tailstock Internal taper of counter spindle/tailstock: MK4 Tailstock travel: 500 mm Max. clamping force: 8,000 Nm Feed and Rapid traverse Feed force X/Z-axis: 5,000–7,000 Nm Rapid traverse X-axis: 24 m/min Rapid traverse Z-axis: 24 m/min Rapid traverse: 100 rpm Tool carrier Hodjwu Ecgepfx Al Sjl Tool turret: 12-station Tool holder: VDI 30 Driven stations: 12 Speed range of driven tools: 0–4,000 rpm MACHINE DETAILS Dimensions: 4.0 x 2.5 x 2.5 m Weight: 6 t Operating voltage: 400 V Frequency: 50–60 Hz Rated current: 29 A EQUIPMENT - SCHUNK three-jaw chuck with 220 mm diameter - Tailstock included - Machine can be transported on a standard truck

Condition: ready for operation (used), Year of construction: 2008, functionality: fully functional, machine/vehicle number: S6AW11S1, turning diameter over cross slide: 540 mm, turning length: 550 mm, turning diameter: 600 mm, spindle speed (max.): 5,000 rpm, travel distance X-axis: 260 mm, travel distance Z-axis: 800 mm, Machine with C-axis, E-axis, Y-axis, W-axis, and driven tools at all positions TECHNICAL DETAILS Swing diameter over bed: 600 mm Swing diameter over cross slide: 540 mm Turning length: 550 mm Longitudinal travel (Z-axis): 800 mm Cross travel (X-axis): 260 mm Control: Fanuc 18i-TB Hjdpsw T Sq Tefx Al Sel Spindle bore: 73 mm Bar capacity: 65 mm Spindle speed: 0 - 5,000 rpm Spindle torque: max. 250 Nm Distance from spindle to sub-spindle: 1,050 mm Sub-spindle: A2-6, travel: 800 mm, spindle: 105 mm, torque: 250 Nm Rapid traverse in X/Y/Z axis: X/Z: 30 m/min / Y: 12 m/min Rapid traverse speed C-axis: 1,000 rpm MACHINE DETAILS Operating pressure: 6 bar Total power requirement: 40 kVA Machine weight: approx. 5.7 t Machine dimensions LxWxH: 2.2 x 3.4 x 2.4 m Transport dimensions of machine: approx. 3.3 x 1.9 x 2.2 m Electric configuration - voltage/frequency: 3 x 400 V / 50-60 Hz Chip conveyor dimensions LxWxH: approx. 2.9 x 0.6 x 0.55 m (0.38 t) Chip tray dimensions LxWxH: approx. 1.6 x 1.3 x 0.25 m (0.2 t) EQUIPMENT - Control cabinet equipped with Rittal cooler - Hinged belt chip conveyor - Chip tray - Compressed air gun - No chuck included in the sale

Year of construction: 1992, condition: new, New driver ISO40 for milling machines FN 20/32/40 Hjdpfxok Nk I Nj Al Sel

Year of construction: 1998, condition: new, New trapezoidal spindle+nut X-axis, for FN20, FN32, FN40 Hodok Nk Iwopfx Al Ssl

Condition: used, weight approx.: 450messurements (LxWxH): 1250x1350x1550y-travel: 300z-travel: 200x-travel: 350speed range: 80-2200table diamension: 600x200 Description:  -)coolant equipment Hedjrgvbpspfx Al Ssl -)machine lamp Revs80 – 2200 (8) r.p.m.TaperDIN2078 ISO30 (Anzugsschraube M12)Working area300 x 200 x 350 mmTable600 x 200 mmFeeds stepless X,Y range20 – 200 mm/id traverse X,Y range1200 mm/ll travel45 mmMax. feed force1600 NmSpindle motor1,1/1,4 kWvertical table600 x 200 mmDistance vertical milling spindle - milling table20 – 370 mmDistance horizontal milling spindle - milling table84 – 434 mmFeed in X-axis (stepless)20 – 200 mm/minLength1250 mmWidth1350 mmHeight1550 mmWeight450 kg

Year of construction: 2005, condition: excellent (used), Control: Siemens 840 D Travel distances: X-260 mm; Z-610 mm Speeds: Main spindle 0-5000 RPM; Sub-spindle 0-7000 RPM C-axis Y-axis 80 mm 12-station turret, all driven Tool holder VDI 30 Speed of driven tools 0-5000 RPM Bar passage 65 mm Accessories: Hainbuch collet chuck on main and sub-spindle Part catcher Hjdpfx Aoppyrysl Sjl Chip conveyor Emco loading magazine LM 1200 Various tool holders

Condition: good (used), Year of construction: 2000, turning diameter 340 mm turning length 2000 mm control FAGOR 8055 swing diameter 550 mm spindle bore 108 mm spindle turning speed - stepless 2500 U/min power capacity 16.5 kW quill stroke 220 mm diameter of quill 100 mm total power requirement 19 kW weight of the machine ca. 4300 kg dimensions of the machine ca. 4300 x 1600 x 1800 m This EMCO E 300x2000 cycle lathe is supplied complete with all accessories. Description: - Coolant device - 1 piece Luenette open 20-145mm - 1 piece closed guide 15-185mm - 1 piece face plate Hsdjvwgpbepfx Al Sel - 1 piece three-jaw chuck - 1 piece wedge bar chuck D=400mm - Parat 4-fold tool holder - Various tool holders