Rack & Pinions


Long lasting & hard wearing rack and pinions. We offer a 1 piece, EZ-Fit (2 piece) and a pinion to retrofit legacy IBG racks.

Rack & pinions are available in many various configurations. Pinions are manufactured as an enclosed ‘clam shell’ housing to keep debris out and the mechanisms running free. Pinions are offered as a traditional one piece design or as a two piece unit (the EZ-fit) ideally suited to repairs and retro-fits. The performance characteristics of all components have been selected to provide a durable and hardwearing solution.


Whether EZ-Fit or traditional, the travel in one turn equates to 5″ / 126mm movement on the rack. This is the same for both standard and heavy duty rack bars. For many years, this travel distance per revolution has been the industry standard so it is possible that failing rack & pinions systems can be easily replaced with little disruption and minimal labour.

Rack travel: 126mm / 5” per pinion revolution

Maximum rack length: 6000mm / 230”

Standard or Heavy Duty

They share the same tooth form but the heavy duty bar is more suited to applications where a more robust solution is required. Both the Standard and Heavy Duty rack bars are compatible with either the Conventional Pressed Pinion or the EZ Fit Pinion systems.

Straight or curved

Curve radius can be standard or client specified and teeth may be on the inside or outside of the curve.

Download Rack & Pinion datasheet


Rack & Pinions

Traditional Pressed Pinion

standard for vents

EZ Fit rack & pinion

EZ Fit Pinion

future proof option

Roper IBG EZ fit

Roper IBG Replacement

for retro fit repairs


Traditional one piece pinions are the standard choice for most new installations. These pinions are available to suit 1″ and 3/4″ BSP tube and may be used with straight or curved racks.

Traditional rack & pinion

The EZ-fit system provides a labour saving solution to damaged or worn rack & pinion systems. The EZ-fit pinion unit combines all the best features of our conventional housing but with a significant additional feature – it is assembled in two halves so can clamp over an existing tube meaning that damaged pinions can be replaced in just a few minutes. Both pinion and housing are rigidly bolted together with A2 Stainless Steel Screws with Nyloc nuts.

These pinions are available to suit 1″ and 3/4″ BSP tube and may be used with straight or curved racks.

Rack & pinions

The Roper IBG “cross rack” & pinion was a popular choice and there are a considerable number still in the field but the supplied pinion was prone to failure.

Growers now have an easy fix for this problem as our EZ-fit pinions have the same tooth pitch as the IBG rack and so, with the use of a special slider block, EZ-fit pinions can be used with serviceable IBG racks.

These pinions are available to fit 1″, 1⅜” (1.315”) and 1⅝” (1.66”) drive tube and may be used with straight racks only.

Roper IBG EZ fit

Download Rack & Pinion datasheet