Two-Speed Gearbox Provides High Speed and High Torque

Today’s machine-tool shops need high speeds and high torques to quickly and efficiently carve complex parts out of modern metals. To help meet that demand, engineers at Stober have designed and built the PS Two-Speed gear box. The drive offers users two options: a one-to-one drive for cutting at speeds up to 10,000 rpm, and either a 4:1 or 5.5:1 ratio that can turn at up to 7,000 rpm. The latter option gives users the ability to do low-torque high-speed cuts or high-torque lower speed cuts.

The gear box is also easy to install. The motor shaft slides into the input coupling and is bolted to the gear box; the coupling is then properly torqued.

The motor is available with either shafted or flanged outputs, and each comes with a short, medium, or long output. This lets users customize the gear box to their specific applications.

There are also three bearing options for the output: a standard deep-groove ball bearing, an angular contact bearing, or cylindrical roller bearings. These options allow the gearbox to deliver up to 2,200 Nm of torque to accommodate the loads associated with machine design and manufacturing demands.

The gear box can be lubricated using splash lubrication, so there is no need to install an oil circulation subsystem. And the gear box can be configured to have a true neutral position that isolated the input from the output. This means large spindle motors are not back driven.