Used Sterling Band Saw for sale (8,402)

Condition: used, Year of construction: 2025, cutting diameter Ø 255 mm capacity 90 degrees: square 230 mm capacity 90 degrees: flat 300 x 180 mm dimensions of saw-band 2765 x 27 x 0,9 mm capacity 45 degrees: round 210 mm capacity 45 degrees: square 190 mm capacity 45 degrees: flat 200 x 160 mm capacity 60 degrees: round 135 mm capacity 60 degrees: square 110 mm capacity 60 degrees: flat 130 x 100 mm Hsdpfx Ahezv Ulds Ssnt cutting speed 18- 110 m/min power requirement 1,5/ 1,8 kW dimensions 1,7 x 1,95 x 1,83 m weight of the machine ca. 0,8 t full automatic one side miter bandsaw NC- controlled - miter cut left 45° full automatic mode - miter cut left 60 half automatic mode - CNC- controll for 10 saw programms and 99 subroutine - automatic lenght movement with ballscrew - roller conveyor feed side - stepless cutting speed

Condition: used, Band saw Felder FB510, year of manufacture 2019, very good condition, standard equipment Hedovr I I Iopfx Ah Ssnt Prices subject to change, errors, printing and typesetting errors reserved

Condition: used, Metal band saw Hans Schreiner MBS270FH, very good condition, 1.5 kW, 260 mm cutting length, 140 mm cutting length, 227 kg Prices subject to change without notice. Errors, misprints, and typographical mistakes excepted. Hnjdpfx Ajx H Ui Tjh Sot

Condition: good (used), Year of construction: 2009, machine/vehicle number: 60227, Offer 26293 Hydraulic Horizontal – Two-Column Miter Bandsaw Machine Hnedpfxozz Rblo Ah Sst Technical data: - Automatic operation for the cutting process, hydraulic lifting and lowering of the saw frame - Manual miter adjustment to the left and right with clamping - Saw band dimensions 4400 x 34 x 1.1 mm - Cutting speed, continuously adjustable 15 - 150 m/min - Cutting pressure regulation, continuously adjustable 10 - 15 bar - Lowering speed 0 - 300 m/min - Cutting range: - at 90°: round 335 mm - at 90°: square/rectangular 500 x 335 mm - at 45°: round 330 mm - at 45°: square 320 x 335 mm - at 30°: square 170 x 335 mm - Miter adjustment with digital angle display - Outfeed roller conveyor with dimension stop 6000 mm - Infeed roller conveyor 4000 mm - Drive 400 V / 6.5 kW - Space requirement approx. W 1500 x H 1850 x D 2100 mm - Weight approx. 1500 kg

Condition: excellent (used), Year of construction: 2019, Horizontal, semi-automatic bandsaw machine in a robust design, intended for professional use. The machine is equipped with a coolant system as standard; its design separates coarse dirt from the required coolant. The saw frame can be easily pivoted, allowing for bevel cuts on both sides, up to 60° to the right and up to 45° to the left. The pivoting saw frame is secured using a clamping lever. Semi-automatic operation: At the touch of a button, the complete cutting cycle is performed – tensioning the material, starting the saw blade and the cooling system, carrying out the cutting process, stopping the saw blade and the cooling system, returning the saw frame to the adjustable starting position, and opening the clamping device, resulting in comfortable and efficient operation. Operation in manual mode is also possible. The clamping pressure can be adjusted via the hydraulic unit. Hnsdpfezwv Ntjx Ah Sjt * The table rotates with the pivoting action, preventing cutting into the table. * Precise carbide guides for accurate cuts. * Display for saw blade tension. * Saw blade speed is frequency-controlled, ranging from 15-90 m/min. * Saw blade dimensions: 2880 x 27 x 0.9 mm * Optional laser line and micro-spray system. The saw blade can be changed easily and quickly, which simplifies the use of the appropriate saw blade and also protects the machine and the saw blade.

Condition: good (used), Year of construction: 2021, Mitre cuts up to 60° left and 45° right Cutting capacity at 90 degrees: round 255 mm Cutting capacity at 90 degrees: square 240 mm Cutting capacity at 90 degrees: rectangular 300 x 180 mm Saw band length: 2,765 x 27 x 0.9 mm Table height: 950 mm Infinitely variable band speed: 18 - 110 m/min Total power requirement: 1.5/1.8 kW Machine weight approx. 420 kg Ball-bearing rotary table Quick-release vice Large material support Coolant system Hsdpfx Asyuyb Njh Ssnt Including: Infeed roller conveyor 2x2000 mm Measuring unit 4000 mm on the discharge side with digital display

Condition: good (used), Year of construction: 2014, Cutting range examples: at 90° 260mm round 300x260mm rectangle at 45° left or right Hodpfszrmk Rex Ah Sjnt 200mm round 180x180mm rectangle at 30° left or right 130mm round 120x120mm rectangle Quick miter adjustment from 30° to 150° in stepless increments of 0.5° as indicated on the scale. The miter pivot point is the intersection between the saw blade and the material support, thus preventing any change in the length dimension. End stops at 30° + 45° left and 30° + 45° right Manual material clamping. In every angle position of the saw frame, the material is clamped parallel at 90°. Cutting pressure is reduced by the self-weight of the heavy, torsion-resistant saw frame and fine adjustment depending on the material cross-section via a hydraulic damping cylinder. MEBA Micro-Dosing System complete with spray head. Machine stand with chip collection tray. with the option of hydraulic lifting of the saw frame.

Condition: new, Available from stock! Comparable to Behringer, Kaltenbach, Kasto, Jaespa, etc. Semi-automatic bandsaw with dual-sided mitre adjustment from 90° to 30°, stepless via scale with 0.5° accuracy. Includes the optional micro-spraying system! Hydraulic lifting/lowering of the saw frame Semi-automatic sawing cycle Hydraulic material clamping / short-stroke cylinder Hnedpfx Ahjwcwgge Set Rapid downfeed to material top edge 30° left Ø 130 or 120x120 45° left Ø 200 or 180x180 90° Ø 260 or 300x260 45° right Ø 200 or 180x180 30° right Ø 130 or 120x120 Remnant length 25 mm

Condition: new, The cutting angle can be continuously adjusted manually within a range of 90° to 45°. Highly precise material feed, even with multiple feed cycles when cutting longer workpieces. Individual feed length: 500 mm. High feed rate possible while maintaining maximum accuracy. The 7.5-inch color touchscreen enables simple and intuitive control of all machine functions. The control unit allows programming of up to 60 programs for quick adjustment of the feed length. The machine can be controlled fully automatically, semi-automatically, or manually. The standard equipment includes control of the feed pressure, a stationary clamping device, and the feed rate. A frequency converter enables continuous adjustment of the saw blade speed within a range of 15-90 m/min. Cutting range examples: 90° round: 260 mm 90° square: 245 mm 90° rectangle: 245 x 250 mm +45° round: 180 mm Hodpfx Aoztva Deh Sjnt +45° square: 170 mm +45° rectangle: 180 x 120 mm Including: Coolant system Pressure gauge for saw blade tension Mechanical saw brush Material slide

Condition: new, Robust band saw for steel and stainless steel. Hodjztu R Iepfx Ah Sjnt Double-bevel cuts, up to 60° to the right and up to 45° to the left. 2 speeds: 35 and 70 m/min. Manual lifting of the saw frame, assisted by tension springs. Downward movement is achieved by gravity, dampened by an oil damper with an adjustable throttle valve. Cutting capacity examples: Round: 90°: 235 mm -45°: 165 mm +45°: 185 mm +60°: 115 mm Rectangular: 90°: 280 x 180 mm -45°: 185 x 80 mm +45°: 185 x 100 mm +60°: 115 x 80 mm With: Cooling system Vise with quick-release mechanism Mechanical material stop Manometer for saw blade tension Mechanical saw brush - Also available in the ARG 260 Plus version (cutting capacity for round stock: 260 mm) – available from stock!

Condition: new, Comparable to Behringer, Kaltenbach, Kasto, Jaespa, etc. Automatic material feed Bevel cutting on both sides Compact design Precise material positioning through servo positioning technology Innovative electric sawing feed with ball screw: Highest cutting performance and quality, while being gentle on the saw blade Unique and patented double bevel system: Material is always clamped at a right angle Cutting range in mm 90°: approx. 335 (round), 500 x 335 (flat) 45° right: approx. 330 (round), 320 x 335 (flat) 45° left: approx. 305 (round), 305 x 335 (flat) 30° right: approx. 180 (round), 170 x 335 (flat) Remaining piece length without bundle tension, min. Manual: 80 mm Automatic: 300 mm Automatic cutting pressure and feed monitoring Frequency-controlled AC drive 15-150 m/min Hydraulic material full-stroke clamping Hedpfx Ajh S Nxdeh Sjnt Automatic movement of the clamping cylinders Minimum speed and saw blade monitoring Electric bevel swivel via servo motor Visualized program input with CNC control Material feed via servo-controlled ball screw drive The following options are recommended: Micro-spraying device Clamping pressure regulator Mounting elements

Condition: new, Comparable to Behringer, Kaltenbach, Kasto, Jaespa, etc. Patented miter system Infinitely adjustable cutting speed Hydraulic feed control Hydraulic lifting and lowering of the saw frame Hydraulic material clamping Powerful, frequency-controlled saw blade drive Swiveling range 30° right / 45° left Cutting range in mm 45° left, round approx. 300, flat 300 x 300 90° round 410, flat 620 x 410 45° right, round 360, flat 420 x 360 30° right, round 300, flat 300 x 300 Remaining piece length without bundle tension 60 mm Recommended options: Hodpfx Aeh S Nxpoh Sent Micro-spray system Laser pointer Clamping pressure regulator Powered chip brush Manual lifting roller Mounting elements

Condition: new, Comparable to Behringer, Kaltenbach, Kasto, Jaespa, etc. 2-column guided metal bandsaw machine with stepless miter adjustment from 90° to 45° to 30°. Particularly suitable for universal use with different cross-sections, materials, and frequently changing miter cuts. The center of rotation remains unchanged at every angle setting, thus ensuring accurate length measurement at 90° and in the miter range. Technical data: Cutting range: 90° round 335 mm, flat 500 x 335 mm 45° right 330 mm, flat 320 x 335 mm 30° right 200 mm, flat 200 x 335 mm Cutting length: Single stroke up to 600 mm, multiple strokes up to 6000 mm Cutting speed: AC frequency-controlled drive, 15-150 m/min, steplessly adjustable at the control panel with the following additional equipment: Free-standing control panel The following options are recommended: Micro-spray device Laser light Hnodpfx Ahsh S Nxze Sot Chip pressure regulator 7" CE panel Mounting elements

Condition: new, Comparable with Behringer, Kaltenbach, Kasto, Jaespa, etc. 2-column guided bandsaw, semi-automatic model with stepless mitre adjustment on both sides, 30° - 45° - 90° - 135°. With patented mitre system (ERP No. 0491120). Particularly suitable for universal applications with various cross-sections, materials, and frequent mitre changes. The pivot point remains unchanged at any angle setting, allowing precise length measurement at 90° and in the mitre range. MEBA Eco-Saw-Innovation 2000 The universally applicable mitre bandsaw MEBA 335 DG is ergonomically advanced and offers an optimal price-performance ratio. Easy, centralised operation. The machine controls comply with CE standard 89/289. Technical Data: Cutting range: round/flat 90° 335/500x335 mm 45° right 330/305x335 mm 30° right 180/170x335 mm 45° left 305/305x335 mm Cutting speed: AC frequency-controlled drive 15-150 m/min, steplessly adjustable via operator panel Hjdpfx Ahet Dpw Rj Ssnt Drive - Saw band: 3 kW; 400 V, 50 Hz - Hydraulic: 0.55 kW - Coolant pump: 0.11 kW Saw frame feed: Stepless up to 300 mm/min, hydraulically controlled Saw band tension: Mechanical with torque wrench Saw band dimensions: 4400 x 34 x 1.1 mm Working height: 750 mm (without base elements) Weight: 1320 kg Bfpzm8E9K3 Dimensions (LxWxH): 1450 x 2350 x 1900 mm Technical modifications reserved. Standard equipment of the MEBA 335 DG-500 Semi-automatic sawing cycle with workpiece clamping - sawing - frame returns to preset height after completed cut MEBA High-Performance Package: Stepless hydraulic cutting pressure and feed monitoring at the blade back. This ensures optimal conditions for any sawing task, i.e., constant pressure for solid material and constant feed for thin-walled sections. Manual mitre adjustment with digital readout, accuracy to 0.1° Rapid lowering of the saw frame to the material edge via pushbutton Patented double mitre system (ERP No. 0491120) Unique double mitre bandsaw where mitres on both sides can be quickly and economically set by swiveling the saw frame and material support. Automatic movement of the clamping vices and digital mitre setting. The material vice automatically moves in the cutting direction to suit the desired mitre, ensuring the workpiece is always clamped square and close to the saw blade. The pivot point for mitre is at the intersection of the saw blade and fixed vice, so length measurements remain accurate regardless of angle. Hydraulic full-stroke workpiece clamping. Quick-clamping for material. At every saw frame angle, the material is clamped parallel at 90°. Rigid two-column linear guided saw frame Saw blade inclined 3° to the material support surface. Centralised machine control Saw frame clearance height adjustment Adjustable moveable blade guide arm for material width Carbide blade guide for band deflection wheels Synchronised chip cleaning brush Saw band tension with torque wrench Operating manual and spare parts list CETOP hydraulic system Coolant system (approx. 100 ltr.).

Condition: new, Comparable to Behringer, Kaltenbach, Kasto, Jaespa, etc. Cutting range: 90° round: 260mm flat: 300x260mm smallest diameter: 5mm Hnedpeh Tnd Asfx Ah Set NC-controlled, automatic material feed with hydraulic material clamping Easy operation via NC control with plain text display Material feed function without reclamping the material for short sections Stable, linearly guided feed clamp with servo positioning for maximum accuracy Automatic adjustment of the blade guide to material width Recommended options: powered chip brush, synchronized with blade speed separately positioned control panel 7" CE panel, network-enabled, capable of storing 1000 data sets, history storage for various functions and data, etc.

Condition: new, Comparable to Behringer, Kaltenbach, Kasto, Jaespa, etc. Semi-automatic sawing cycle with workpiece clamping, sawing, and lifting to the set height after the cut is completed. Stepless hydraulic control of cutting pressure and feed rate on the back of the saw blade. This ensures optimal conditions for every sawing task, i.e., constant pressure for solid material and constant feed rate for thin-walled profiles. Particularly suitable for universal use with different cross-sections, materials, and frequently changing miter cuts. The machine control complies with CE standard 89/289. Technical data: round/flat 90° 325/500 x 300 45° 300/300 x 300 30° 200/200 x 200 This model can also be supplied with double miter capability as model 320 DG! Hnedpshppabjfx Ah Sot Rapid lowering of the saw frame via push button to the material edge. Manual miter adjustment from 90° to 30°, stepless according to scale. The miter pivot point is the intersection between the saw blade and the fixed clamping jaw, thus no change in the length dimension when changing the angle. Hydraulic full-stroke workpiece clamping - CETOP hydraulic system. At every angle of the saw frame, the material is clamped parallel at 90°. Complete coolant system with electric submersible pump. Central machine operation. Saw blade drive with end-of-travel shut-off. Movable blade guide arm, adjustable to material width. Saw blade deflector rollers with carbide guide. Chip-cleaning brush, rotating with the blade. Saw blade tension with torque wrench. Paint finish: silver gray / blue gray (RAL 7001 / RAL 7031). Remaining piece length: 25mm. Cutting speed: AC frequency-controlled drive, 15-150 m/min, steplessly adjustable at the control panel. Drive: Saw blade 3.0kW; 400V, 50Hz. Hydraulics 1.1kW. Coolant pump 0.1kW. Saw frame feed: Stepless up to 300mm/min, hydraulically controlled. Saw blade tension: Mechanical with torque wrench. Saw blade dimensions: 4200x34x1.1mm. Working height: 750mm (without mounting elements). Weight: 850kg Dimensions (LxWxH): 1300x2050x1400mm The following options are available: Laser light Micro-spray device Clamping pressure regulator Support table on the feed side.

Condition: excellent (used), Year of construction: 1979, Still in very good condition, this bandsaw is made by the renowned manufacturer Hema. Hnjdezz Apnopfx Ah Sot Roll diameter: 800 mm.

Condition: used, Year of construction: 2024, functionality: fully functional, Year of manufacture: 2024 Cutting ranges: Cutting range 90° round 360 mm Cutting range 90° flat (W x H) 360 x 360 mm Clamping range 0 - 360 mm Smallest section length 10 mm Smallest dimension to be cut 10 x 10 mm Shortest remaining piece length in automatic operation (only possible with geometrically flawless surfaces) 35 mm Shortest remaining piece length in single cut 10 mm Dimensions and weights: Overall dimensions (L x W) 1,650 x 2,900 mm Height 2,030 mm Material support height 700 mm Weight 3,450 kg Performance characteristics: Saw motor, frequency-controlled 4 kW Total connected load 6 kW Single material feed length 500 mm Multiple feed length 9,999 mm Machine roller track, length 1,100 mm Ball-bearing mounted, robust transport rollers 8 pieces Roller diameter 60 mm Roller axle spacing 135 mm Cutting speed, continuously variable 12 - 150 m/min Saw blade dimensions 6,096 x 34 x 1.1 mm Alternatively 6,096 x 41 x 1.3 mm Cutting feed: electrically adjustable via ball screw Material feed: ball screw Material clamping: hydraulic Saw blade cleaning: self-adjusting chip removal brush, electrically driven Coolant: Pump capacity 75 l/min at 2 m head, Coolant tank volume approx. 100 l Paint finish: Light grey RAL 7035, anthracite grey RAL 7016 textured paint Compressed air connection: approx. 6 bar required (customer-side) KASTO sawing machine control ProControl 9" Hardware  Industrial PC, fanless, no moving parts Hjdpfx Aezv Th Dsh Sont  Robust metal housing, aluminum front panel  Resistive touchscreen  Color TFT display 9"  Ambient temperature 0 - 50 °C  Protection class, front: IP65 Software  Operating system Windows 10 Enterprise LTSC 2019  SIMATIC S7 - 1500 Failsafe Software Controller CPU

Condition: good (used), Year of construction: 2002, Bandsaw – Automatic Jaespa Compact 2 Year of manufacture: 2002 Internal machine no. 50 - High-performance bandsaw automatic, heavy-duty, hydraulic production bandsaw - Parallel sawing feed system in profile guide rails - Mitsubishi NC program control E1032 for preselection of 90 programs, each with a specific quantity and corresponding section length - PLC control Mitsubishi - With Siko incremental encoder Hjdpfxoylwaws Ah Sjnt - Material feed with ball screw spindle, 950 mm stroke, any desired section length from 3 mm to 9999 mm - Hydraulic material clamping with long-stroke cylinder, opening on both sides - Material clamping with double clamping device in front of and behind the saw blade - Remaining piece length in automatic operation: 90 mm - Max. section length in automatic operation: unlimited - Material support height 850 mm - Incl. 6 meter roller conveyor - Coolant tank 50 l

Condition: used, Year of construction: 2002, Fly wheel diameter : 800 mm Hnsdjzz Agaopfx Ah Sot Engine size : 11 Kw 15 Degree til in table Maximum cutting hight : 400 mm Table size : 1060 x 800 mm Hight from floor : 1000 mm Fly wheel speed : 860 rpm Blade width : 80 x 0,8 mm Self centering infeed divice with adjusteble speed ( engine size : 0,37 Kw ) Ask for WHATSAPP live demo

Condition: excellent (used), functionality: fully functional, Equipment: motor brake, a very nice HEMA band saw, max. cutting width 600mm, motor newly re-wound. Technically fully inspected. Condition very good. Several saw blades are included. Free delivery is possible within a radius of up to 150 km. Hnjdpfx Aezzwm Ish Sjt

Year of construction: 2002, condition: used, Empty weight: 2.700 kg Dimensions (LxBxH): 750 x 360 x 230 cm Serial number: 302900081.0 Equipped with an automatic stop system and safety guardrail. Brand: MPS Type: Powerstop Year of manufacture: 2022 Conveyor length: 6200 mm Conveyor width: 630 mm Danobat information: Cutting capacity: 440x440 mm Weight: 2,700 kg Power: 75 kW Hnsdpfjz Ah Dtex Ah Sjt Equipped with: automatic chip removal Setup dimensions (LxWxH): 7,500x3,600x2,300 mm Online auction of construction, welding, and metalworking machinery and tools (e.g., DANOBAT, BOMAR, WORTELBOER, FRONIUS, ADK, LINCOLN, etc.), as well as vehicles (various LINDE and STILL forklifts, 4 Mercedes Sprinters, 2 VW TRANSPORTERs, etc.), transport and material containers, and office inventory originating from the recent bankruptcy of MOB Mechanical Contracting BV in Rotterdam, the Netherlands. The online auction opens Friday 11 September and closes Wednesday 30 September. Register your account via our website and place your bid. For viewings and inspections check the auction information on the website. Viewing day is on: - Monday 28 September Pickup days are on: - Monday 12 October - Tuesday 13 October - Wednesday 14 October Dome Auctions is an innovative auction platform dedicated exclusively to the industrial sector. By focusing on machinery sales from business closures, restructurings, and bankruptcies, we provide a trusted marketplace where buyers and sellers connect with confidence. Unlike general auction houses, Dome Auctions specializes in selling complete industrial assets directly from factories, ensuring quality and reliability. With a commitment to transparency, industry expertise, and tailored service, we streamline the sales process and maximize value for all parties. As online auctions continue to grow in the European industrial market, Dome Auctions offers a professional and efficient solution for companies seeking high-quality machinery at competitive prices.

Condition: new, Year of construction: 2026, CORMAK S440R Metal Band Saw The professional CORMAK S440R semi-automatic metal band saw is an industrial-grade machine designed for precise and repeatable cutting of pipes, profiles, and solid materials. Its high power, heavy-duty construction, and fully automated operating cycle ensure reliable performance even under demanding conditions and in serial production. Main Advantages Semi-automatic operating cycle – hydraulic control of the vise and saw arm movement High 4.4 kW motor power enables cutting of difficult-to-machine materials Rigid cast-iron saw arm reduces vibrations and ensures high cutting precision Smooth band speed adjustment – 20–90 m/min (inverter-controlled) Swiveling saw arm enables angled cutting from 60° to the left to 60° to the right Excellent ergonomics – separate control panel with LCD display and clear controls Construction and Technology The CORMAK S440R is based on a stable body and a cast-iron saw arm, which minimizes vibrations and improves cutting quality. The high-quality band drive, controlled by an inverter, allows the cutting speed to be adjusted to the type of material being processed. The 34 mm wide cutting band operates with carbide guide systems, ensuring durability and precision. Cutting Precision and Performance The cutting cycle is performed automatically: material clamping, band start-up, controlled lowering of the saw arm, stopping after the cut, and returning to the starting position. This solution significantly reduces operating time and minimizes errors resulting from manual operation. The angle reading system and arm position memory function support precise and repeatable cuts in serial production. Applications The machine is designed for cutting structural, tool, and stainless steels. It is ideal for cutting pipes, steel profiles, bars, and sections in metalworking shops, manufacturing plants, and tool rooms. It performs excellently in both serial and one-off production. Standard Equipment PLC controller Semi-automatic operating cycle Control console with LCD display Hydraulic control of the vise and saw arm (up/down) Saw arm position memory Digital cutting angle display Saw arm rotation: 60°L – 45°L – 0° – 45°R – 60°R Powered cleaning brush Closed-loop cooling system Bi-metal band saw blade Technical documentation + CE Declaration of Conformity Hjdpfx Aoi Dx R Nsh Sjnt Technical Specifications Minimum cutting diameter Ø5 mm Minimum material length in the vise 30 mm Distance from vise base to floor 780 mm Band dimensions 5200 × 34 × 1.1 mm Total power 4.4 kW Band speed 20–90 m/min Dimensions (L × W × H) 2500 × 1900 × 1450 mm Weight 1100 kg Looking for a reliable semi-automatic metal band saw? Choose the CORMAK S440R and rely on high performance, precision, and professional-grade quality.

Condition: excellent (used), Year of construction: 2022, machine/vehicle number: AE0454, functionality: fully functional, Working area: Round material: 460 mm Square material: 460 x 460 mm Band speed: 16 - 120 m/min Hsdpeztbt Nsfx Ah Ssnt Motor: 4 kW Blade size: 5730 x 41 x 1.3 mm Machine weight: 3,000 kg Machine dimensions: L=2,800, W=2,400, H=2,100 mm

Condition: good (used), Year of construction: 1969, functionality: fully functional, power: 25 kW (33.99 HP), control voltage: 380 V, Completely refurbished, it is in very good condition and features adjustable feed. It comes with 4 new bandsaw blades, each 100 mm wide. Hnsdpfxsy U H Hao Ah Sst