Hollow pin chain is connected by hollow pins, and the hollow holes can be used to install various attachments for conveyor systems. This facilitates fixing attachments to outer links by bolting through the hollow pin and is suitable for use in all normal conditions. The attachments may be bolted up tight or held in the hollow bearing pin in a free manner. Bolted attachments should only span the outer link, as a bolted attachment spanning the inner link would impair the free articulation of the chain. In a hollow pin chain with single and double pitch, the hollow pins are the same as the bushings of the corresponding standard chain in diameter, and it can be said that a hollow pin chain is a bushing chain in which pins with the same diameter as that of the rollers of the corresponding standard chain are used as bushings.

Hollow plunger is designed for carrying out both push and pull operations i.e. tightening cables, bars and bolts, extraction of sleeves and bearings. It is made of hollow hard chrome plate. Collar threads are used for easy fixing. It has interchangeable saddles - plain, threaded and solid. It is versatile in testing, maintenance and tensioning applications. If we need a higher cylinder capacity-to-weight ratio, we can use aluminum hollow plunger cylinders.

A rubber hollow spring is designed to absorb and dampen shocks. The absorption takes place via a rubber damper, which is characterized by a long extension to its actual height, by small lateral dimensions and a relatively small diameter. The spring exhibits a high degree of vertical stability when extended. Installation is easy and takes place without impediment from vulcanized attachment parts.

Hollow Shaft Gearheads are right angled, flange-mounted gearheads that use worm gears and special helical gears. They are locked with a torque arm when mounted so the gearhead does not rotate from the reactive force of the load. It has a peak torque rating of 7,450 in-lb and a peak radial load capacity of up to 1,798 lbs. These are used in induction motors, reversible motors, electromagnetic brake motor, speed control system and synchronous motors.