Smooth operation from heavyweight couplings

Edited by the Engineeringtalk editorial team Oct 23, 2003

All-metal 1000 Series grid couplings combine high-torque high-horsepower operation with vibration, shock and misalignment capabilities not provided by other metallic coupling types.

All-metal 1000 Series grid couplings combine high-torque high-horsepower operation with vibration, shock and misalignment capabilities not provided by other metallic coupling types.

Lovejoy's 1000 Series grid couplings feature an advanced design with a high-tensile alloy grid that reduces vibration by as much as 30%, cushions shock loads and compensates for parallel, angular and axial misalignment.

The 1000 Series grid couplings offer 19 standard model sizes with nominal torque ratings up to 170GNm.

These grid couplings are also fully interchangeable with industry-standard grid couplings.

Major industries such as food processing require a heavy-duty coupling with minimal maintenance requirements that will both withstand harsh and caustic cleaning cycles and yet not rust.

To help comply with strict USDA guidelines regarding food plant operations, an optional protective coating is available.

The all-metal 1000 Series Grid coupling offers all this.

From brew kettles to mash tubs, bottling, canning, cereal cookers and the baking industries' dough mixers, food plants can rely on Lovejoy couplings.

The 1000 Series grid coupling also services many needs within the lumber, aggregate, paper, rubber and oil industries, with multiple potential applications for metal rolling mills as well.

All Lovejoy 1000 Series grid couplings are available with horizontally split or vertically split covers.

The horizontal split, designed for limited spaces and reversing shafts, allows easy access for grid lubrication or replacement.

Vertical split covers, made from stamped steel, are ideal for higher operating speeds.

Regardless of cover type, hubs and grids are identical and interchangeable within given size ranges.

Full spacer models are also available in eight smaller sizes, 1020 to 1090.

Designed primarily for reciprocal pump and compressor applications, a special dropout section allows for convenient pump/compressor servicing.

The Lovejoy 1000 Series grid coupling employs a high-tensile, shot-peened alloy steel grid that nests in the teeth of precision machined hubs.

The spring-like grid absorbs vibration and impact energy while steadily transmitting torque between hubs.

Hub teeth are specially formed with an axial curve that increases their area of grid support as the load increases, which progressively stiffens the coupling to absorb shock loads gradually.

The 1000 Series employs tapered grids best suited for medium- to heavy-duty applications designed for systems requiring power ratings as high as 87,410kW at 720rev/min.

All Lovejoy 1000 Series grid coupling models handle parallel, angular and axial misalignment between shafts.

Grid flexibility accommodates up to 0.56mm of parallel offset.

Under angular misalignment up to 0.25 degrees, a rocking and sliding action of grid and hubs permits smooth operation without any loss of power.

The 1000 Series grid coupling construction also forgives minor axial shaft movement, allowing end-float of both driving and driven shafts as the grid slides freely in the grooves.

Snap-in grid eases installation and replacement efforts.

All-metal design ensures reliable operation and long service life in relatively high ambient temperatures and the presence of certain oils or chemicals.

Lovejoy offers a large variety of stock couplings not only for immediate shipment of standard models but also for quick turn-around and shipment of special rebore requirements.

Standard units up to size 1140 are available through Lovejoy's quick ship programme; other specifications may require slightly longer lead times.