ACRA 2690 ACH MANUAL LATHES

Technical Description

The ACRA 2690 ACH is a precision gap bed engine lathe designed for heavy-duty machining operations. This manual lathe features a 26-inch swing over bed with a 90-inch distance between centers, providing substantial capacity for large workpieces. The machine boasts a 4-1/8-inch spindle bore with a D1-11 spindle nose and is supported by three precision P-Grade taper roller bearings that are dynamically balanced and precision ground. Equipped with a 15 horsepower motor operating at 230/460V AC three-phase power, the lathe delivers robust performance with 12 selectable spindle speeds ranging from 13 to 1,200 RPM. The 17.5-inch swing over cross slide and 35-3/8-inch swing in gap accommodate larger diameter workpieces and allow for removable gap sections. The lathe features Meehanite cast iron construction with vibration stress relief and induction-hardened, precision-ground bedways (HRC 48-55), ensuring dimensional stability and low noise operation. A universal gearbox with heat-treated gears supports inch, metric, module, and diametrical thread cutting capabilities. The precision hand-scraped removable gap design and 3V sliding way structure provide superior stability for heavy cutting applications. Standard accessories include a 15-inch 3-jaw chuck, steady rest, coolant system, and splash guard. Weighing 7,200 pounds and measuring 160 x 50 x 60 inches, this precision instrument delivers reliable performance for production and job shop applications.