Upgraded HTA Honing System Increases Part Capacity and Stroker Torque

Ideal for bore resurfacing, the HTA hone is PLC controlled, handles parts up to 13.5 ft long, 21 in diameter and 8000 lb.

The all-electric HTA hone from Sunnen Products Company (St. Louis, MO) brings increased part capacity and stroker torque to applications such as bore resurfacing of hydraulic cylinders, extruder barrels and die casting shot tubes, or manufacture of gas flow meter tubes and repair of actuators for construction, mining, farming and forestry equipment.

The machine is available in two standard model sizes – the HTA-2100 for 6.9 ft (2.1 m) part lengths and the HTA-4100 for 13.5 ft (4.1 m) part lengths, accommodating true 2 m or 4 m parts. Both models handle parts with bore ID of 2.5 in to 21 in (63.5 – 533 mm) and maximum part OD of 24 in (610 mm), and part weights to 8000 lb (3628.7 kg). The HTA can also be custom-configured for part lengths up to 65.6 ft (20 m), or with a powered section only for unhindered part lengths.

Stroker torque capability has been increased by 35 percent over the previous HTA model via a heavy-duty stroker drive gearbox. Width of the steel-impregnated polyurethane belt has been increased from 0.9 in to 1.9 in (22 mm to 50 mm), providing a 20:1 safety factor.

“The HTA takes what was already an excellent machine platform and makes it even more robust without raising the cost,” says Phil Hanna, machinery production manager for Sunnen. “With installations in the U.S., Europe, South America, Australia, and Africa, this machine has proven to be popular all over the world, accounting for nearly 60 sales since its introduction in mid-2009, and it has been chosen as the primary tube hone for Caterpillar’s Dealer Services network worldwide.”