Larger spindle SR-Series Big Bore Turning Center


The Hardinge Group continues to expand its spectrum of Hardinge turning centers by introducing the American designed and built SR 200 BB (Big Bore) high-performance multi-tasking turning center. Positioned near the top of Hardinge’s turning center portfolio (above the GS-Series and below the RS-Series), the all-new SR 200 BB offers users an exceptional combination of performance features that include speed, power, accuracy and durability. This heavy-duty turning center features a Hardinge Sure-Grip lever type 250mm (10-inch) 3-jaw chuck as standard equipment. The SR 200 BB can be configured with many multi-tasking functions including, live-tooling, Y-axis, C-axis and sub-spindle, needed to machine today’s complex small to medium sized parts complete in a single set-up.

The Hardinge SR 200 BB turning center is a true high-performance “chuck and bar” machine that will cut the toughest materials and handle deep interrupted cuts with ease while maintaining overall part accuracy. The machine features superior vibration damping accomplished through the use of heavy-duty linear roller guides mounted to a Harcrete®-reinforced cast iron base. The platform allows the user to tackle the toughest work virtually vibration free while reducing expenditure on today’s high-performance tooling by as much as 33%. Whether it’s heavy-metal removal in low-volume or in high-volume production, the new SR 200 BB will afford the user the confidence to get jobs done for less!

According to Jeff Ervay, Hardinge North American turning product manager, “adding the larger capacity SR 200 BB machine to the range of SR-Series ‘chuck and bar’ models offers a precision machine to a whole new audience for Hardinge, having best-in-class torque and horsepower. SR-Series machines allow unmanned operation, high through-put, and ‘done in one’ capability in a high production or job shop environment…plus the ability to perform these operations on hardened material.”


SR 200 BB Work Capacities
Maximum Swing Over Way Covers — 22.44" (519.2mm)
Chuck Size (Std. Hardinge Sure-Grip Chuck) — 10" (250mm)
Maximum Bar Capacity — 3.14" (79.7mm)
Maximum Machining Diameter — 12.15" (308.6mm)
Maximum Machining Length w/Tailstock and 10” Chuck — 17.2” (436.9mm)

SR 200 BB Spindle Specifications
Maximum Speed — 4000-rpm
Maximum Power Rating — 30-hp (26-kW)
Torque at Base Speed (505 rpm) — 306ft-lb (414.8Nm)
Spindle Nose — A2-8

Key attributes of the Hardinge SR-Series machines include:
•    Hardinge/GE Fanuc i-Series SR control unit with high-speed milling capability and multi-axis functionality
•    Fanuc Manual Guide i conversational programming system
•    Hard Turning and Hard Milling capability
•    Harcrete-reinforced cast iron base for superior damping, improved tool life “hard turning” capability up to 67 Rc
•    Exclusive Eppinger top plate option designed for high accuracy, zero clearance tool location, repeatability and robust live tooling system
•    A vast array of exclusive Hardinge workholding systems.


• Maximum Speed — 4000-rpm Maximum Power Rating — 30-hp (26-kW) Torque at Base Speed (505 rpm) — 306ft-lb (414.8Nm) Spindle Nose — A2-8
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