Abstract: A ring saw includes a ring saw blade, a tool holder that guides the ring saw blade in a cutting plane, a motor, and a driving wheel where the ring saw blade is drivable in the cutting plane by the driving wheel and the driving wheel is coupled to the motor. The driving wheel is mounted in a bearing block so as to be rotatable about a drive axis perpendicular to the cutting plane. The bearing block is movable parallel to the cutting plane.

Abstract: A ring saw blade includes a flat annular support which has a side face and an outer circumference. One or more cutting elements are disposed along the outer circumference. An annular groove is recessed into the side face and has a radially inner flank and a radially outer flank. The radially inner flank is conical and a first cone describing the radially inner flank has a half opening angle of between 10 degrees and 30 degrees.

Abstract: A ring saw includes a ring saw blade, a tool holder that guides the ring saw blade in a cutting plane, a motor, and a driving wheel where the ring saw blade is drivable in the cutting plane by the driving wheel and the driving wheel is coupled to the motor. A guide roller is disposed on a first side of the cutting plane where the ring saw blade is guidable by the guide roller from the first side. A guide roll is disposed on a second side of the cutting plane where the ring saw blade is guidable by the guide roll from the second side. The guide roll is disposed in a hood that is pivotable relative to the cutting plane.

Abstract: ring saw includes a ring saw blade, a tool holder that guides the ring saw blade in a cutting plane, a motor, and a driving wheel where the ring saw blade is drivable in the cutting plane by the driving wheel and the driving wheel is coupled to the motor. The driving wheel is mounted in a bearing block so as to be rotatable about a drive axis perpendicular to the cutting plane. The bearing block is movable parallel to the cutting plane.

Abstract: A ring saw blade includes a flat annular support which has a side face and an outer circumference. One or more cutting elements are disposed along the outer circumference. An annular groove is recessed into the side face and has a radially inner flank and a radially outer flank. The radially inner flank is conical and a first cone describing the radially inner flank has a half opening angle of between 10 degrees and 30 degrees.

Abstract: A ring saw includes a ring saw blade, a tool holder that guides the ring saw blade in a cutting plane, a motor, and a driving wheel where the ring saw blade is drivable in the cutting plane by the driving wheel and the driving wheel is coupled to the motor. A guide roller is disposed on a first side of the cutting plane where the ring saw blade is guidable by the guide roller from the first side. A guide roll is disposed on a second side of the cutting plane where the ring saw blade is guidable by the guide roll from the second side. The guide roll is disposed in a hood that is pivotable relative to the cutting plane.

Abstract: A ring saw includes a ring saw blade, a tool holder that guides the ring saw blade in a cutting plane, a receiving space in which the tool holder is disposed, a motor, and a driving wheel where the ring saw blade is drivable in the cutting plane by the driving wheel and the driving wheel is coupled to the motor. A guide roller is disposed on a side of the cutting plane where the ring saw blade is guidable by the guide roller from the side and where an outlet of a water flushing system is directed at the guide roller.

Abstract: A ring saw includes a ring saw blade, a tool holder that guides the ring saw blade in a cutting plane, a motor, and a driving wheel that drives the ring saw blade in the cutting plane and that is coupled to the motor. A guide roller is disposed on a first side of the cutting plane where the ring saw blade is guidable by the guide roller from the first side. A guide roll is disposed on a second side of the cutting plane where the ring saw blade is guidable by the guide roll from the second side. The guide roller is mounted such that the guide roller is freely rotatable about an axis of rotation where the axis of rotation slopes by 50 degrees to 80 degrees relative to the cutting plane.

Abstract: The ring-shaped saw blade and an associated saw blade drive are provided as an easy exchangeable tool preset for a hand guided saw. The saw is distinguished by high stability, low weight proper, high flexibility as well as high precision and is suitable for an easily to handle and quick connection with a high speed compact and a hand guided electrical drive unit. The ring-shaped saw blade exhibits circular disposed flank toothing on two sides, wherein the flank toothing runs in a radial direction on two sides. The saw blade with the two cited flank toothings engage into a front side groove of an eccentrically disposed friction wheel, wherein the groove faces of the friction wheel in each case are equipped with the flank toothing which engages into the flank toothings of the saw blade. The saw blade drive comprises a drive wheel on a drive shaft, a drive pinion and a friction wheel on a gear shaft, which is disposed parallel to the drive shaft.

Abstract: The invention relates to a drive unit (3) for a chip-removing machine tool, especially a sawing, cutting-off or grinding machine for machining concrete, stone, wood or metal. The drive unit (3) can be connected to a tool (2) and comprises a movement unit (8) with an output side swivel arm (9) and a base unit (12). The tool drive (4), which is composed of an electric motor and a gear unit, is arranged in the housing (10) of the swivel arm (9) by means of an integrated bearing. At least one actuating drive (19, 20) which is used to rotate the swivel arm (9) and to move the base unit (12) in a travelling manner can be arranged in the base unit (12). An integrated liquid cooling device (32) can be provided for the drives (4, 19, 21).