Tsugami BO325

$195,000 - $265,000 Updated 2026-03-16

Key Specifications

Rapid Traverse

28 m/min (1,102 ipm)

Accuracy

±0.003 mm

Repeatability

±0.002 mm

max bar capacity

32 mm (1.260 in)

main spindle speed

8,000 RPM

sub spindle speed

8,000 RPM

Overview

The Tsugami BO325 is a 32 mm Swiss-type automatic lathe built for high-precision production of oil-country tubular goods (OCTG) components, downhole tools, and larger-diameter industrial precision parts. The BO designation in Tsugami's nomenclature reflects a platform optimized for oil-country applications — specifically the stringent material and dimensional requirements of components used in oil and gas drilling, completion equipment, and related subsea hardware. At 32 mm bar capacity, the BO325 bridges the gap between standard Swiss-type production machines and the heavy-duty turning centers used for large tubular components.

The BO325 runs a main spindle at 8,000 RPM with 5.5 kW (7.5 hp) of power, configured for the robust cutting demands of 4140/4142 chrome-moly steel, Inconel 718, and the API-grade steel alloys common in downhole tooling. Sub-spindle speed is 8,000 RPM. The machine provides 5 axes in the standard configuration, with the option to expand to 7 axes for applications requiring B-axis angular machining or Y-axis milling for cross-port features common in downhole valve bodies.

Tool capacity is 24 to 28 stations, including both OD turning and live tooling positions for thread milling, cross-drilling, and slot milling — all operations that appear routinely in oil-country component production. The guide bushing system is engineered for the demanding stock straightness requirements of oil-country bar stock, which often arrives in less-than-perfect straightness compared to precision ground stock used in medical applications.

High-pressure coolant to 70 bar is available as an option and is strongly recommended for Inconel and chrome-moly alloy work. The Fanuc 32i-B control is standard. Pricing for the BO325 falls in the $195,000 to $265,000 range. The BO325 competes primarily with the Citizen L32 and Star SR-32J III in the 32 mm precision turning segment serving energy markets.

Full Specifications

Parameter	Value
Max Bar Capacity	32 mm (1.260 in)
Main Spindle Speed	8,000 RPM
Sub Spindle Speed	8,000 RPM
Main Spindle Power	5.5 kW (7.5 hp)
Number Of Axes	5 axes standard (up to 7 with options)
Tool Stations	Up to 28 tools
Guide Bushing	Standard (heavy-duty for oil-country stock)
Travel X1	35 mm (1.38 in)
Travel Z1	220 mm (8.66 in)
Travel X2	35 mm (1.38 in)
Travel Z2	100 mm (3.94 in)
Rapid Traverse Rate	28 m/min (1,102 ipm)
Positioning Accuracy	±0.003 mm
Repeatability	±0.002 mm
CNC Control	Fanuc 32i-B
Machine Weight	3,200 kg (7,055 lb)

Specifications sourced from tsugamiamerica.com — verified 2026-03-28

Strengths & Limitations

Strengths

32 mm bar capacity covers the range of downhole tool components and OCTG fittings that fall outside the reach of 26 mm Swiss-type machines
5.5 kW main spindle provides the power needed for aggressive cuts in API-grade chrome-moly steels, Inconel 718, and other oil-country alloys
Heavy-duty guide bushing system is engineered for the less-than-perfect straightness of oil-country and structural bar stock
High-pressure coolant option (70 bar) is essential for Inconel and hardened steel machining and is fully integrated into the machine design
28-tool capacity handles the full range of OD turning, thread milling, cross-drilling, and port milling operations common in downhole components
Fanuc 32i-B control provides reliable, proven operation in demanding shop environments with high-volume production schedules

Limitations

Oil-country applications demand experienced programmers and operators familiar with difficult alloys; the BO325 is not an entry-level machine
At 3,200 kg, the BO325 requires a robust concrete floor and proper leveling — shops with lightweight floor slabs should assess structural requirements
5-axis standard configuration may require upgrade investment for shops needing Y-axis or B-axis capability for complex ported components
8,000 RPM spindle speed limits the machine for very small diameter work; dedicated smaller Swiss-type machines are more efficient for diameters under 10 mm

Best For

Oil and gas equipment manufacturers producing downhole tool components, completion equipment fittings, and valve bodies from chrome-moly and Inconel Energy sector contract shops running high-volume production of API-standard threaded components, mandrels, and small tubular assemblies Aerospace and defense shops machining hydraulic and pneumatic components from high-strength alloy steels in the 25-32 mm diameter range Precision turning shops looking to diversify into oil-country work with a purpose-designed Swiss-type platform

Frequently Asked Questions

01 What is the thread-making capability on the BO325 for oil-country connections?

The BO325 supports thread milling and single-point threading for API-standard connections including NPT, API Line Pipe, and proprietary premium thread forms. Thread milling through live tooling positions is preferred for harder materials like Inconel and 4140 chrome-moly where single-point threading forces are high. Thread whirling attachments can also be configured for high-volume screw and bolt production.

02 How does the BO325 handle Inconel 718 machining?

Inconel 718 is one of the most demanding materials for Swiss-type lathes. The BO325 handles it with high-pressure coolant (70 bar strongly recommended), carbide tooling with AlTiN or TiAlN coatings, conservative surface speeds (25-50 m/min), and light depth of cut. The guide bushing support is critical for maintaining accuracy as Inconel generates high cutting temperatures. Cycle times for Inconel are significantly longer than for steel or titanium — budget 3-5x the cycle time of equivalent steel parts.

03 Can the BO325 produce complete parts without secondary operations?

Yes, for the majority of downhole component geometries in the 32 mm diameter range. The dual-spindle configuration handles front-work and back-work in a single setup. Parts requiring features beyond what the 28 tool stations and 5-7 axes provide may need secondary operations, but most downhole pins, mandrels, and valve components can be completed in a single BO325 cycle.

04 What is the recommended coolant system for oil-country work?

High-pressure coolant at 50-70 bar is strongly recommended for the chrome-moly steels and nickel alloys common in oil-country work. The BO325's high-pressure coolant option includes through-tool delivery capability for drilling operations. A good coolant filtration system with fine filtration (25 micron or finer) is important for managing the chips generated by tough alloys. Straight oil (neat cutting oil) rather than water-based coolant is preferred by many shops for Inconel work.

05 How does the BO325 compare to a conventional CNC lathe for oil-country work?

The BO325 offers complete single-setup production for parts under 32 mm diameter, eliminating transfer between a turning center and a machining center for cross-drilling and milling. This reduces WIP inventory, setup time, and handling damage. Conventional CNC lathes offer larger bar capacity (typically 51-102 mm) and more spindle power for heavier roughing. For parts in the 15-32 mm range requiring complex features, the Swiss-type approach is typically 30-60% faster in total cycle time including setups.