A traverse cylinder is mounted between the support bar and movable platen.

A through-cylinder is used to provide a protected passage through the platen for the fiber optic cable as the fiber optic cable extends into the through-hole in the polishing pad.

The interior channel may constitute a single cylindrical through-bore in the sorbent particle, or alternatively, an array of intersecting or non-intersecting channels.

It has a shape of cylinder and through hole.

A roller (100) with controllable deflection is provided with a revolving hollow roller (1) and a non-rotating crosshead (10) which crosses the hollow roller along its length.

Within the bore of the inner cylinder, scrapers (32) are provided for scraping off ice formed in the internal bore.

A through hole (6) is provided on the barrel cover (2).

The inventive flat cylinder head seal ring consists of at least one metallic layer (1, 2) and at least one cylinder through hole and another through hole embodied therein.

A traverse cylinder is mounted between the support bar and movable platen.

The stationary cylinder (2) includes a through-going hole (14) housing the drive shaft (8).

A distraction screw is mounted through the cylinder and with one end resting on the chamber.

The barrel-piston assembly (38) has a barrel with a top portion (42) having an open end, and a piston extending through the open end.

The oil drainback passage is formed by a bore through a cylinder wall of the crankcase and a bore through the cylinder head.

A lumen of the inner cylinder provides a conduit for fluids traversing the length of the stent.

A roller for a paper smoother or calender is provided with a rotary tubular casing (20) and a fixed core (30) traversing the casing of the roller.