Nomura NN-32
Key Specifications
Accuracy
Repeatability
max bar capacity
max machining length
number of axes
main spindle speed
Overview
The Nomura NN-32 is a 32mm bar capacity CNC Swiss-type automatic lathe from Nomura DS, the Japanese precision machine tool manufacturer known for its emphasis on dimensional accuracy and surface finish quality in the Swiss-type market. The NN-32 represents Nomura's step up from the 20mm ultra-precision DS-Series to a larger-diameter platform targeting the 25-32mm production segment — a size class common in medical implant bodies, hydraulic fitting production, and precision automotive component manufacturing. Nomura brings its foundational philosophy of precision-first engineering to the 32mm tier: the NN-32 is designed not simply to provide more bar capacity, but to maintain the same commitment to spindle runout, guide bushing concentricity, and thermal stability that defines Nomura's reputation in the smaller-diameter segment.
The NN-32 features a main spindle rated at 8,000 RPM with 7.5 kW of power — calibrated for the higher cutting loads of 32mm work in titanium and stainless without sacrificing the precision characteristics that Nomura builds into its machines. The sub-spindle provides complementary backworking capability at 8,000 RPM, with C-axis on both spindles enabling complete angular positioning for driven cross-tools. Y-axis is available on the main spindle side, supporting off-center milling for keyways, flats, and radially positioned features. The machine offers up to 28 tool positions, providing adequate tool density for the multi-feature parts common in the 32mm production market.
Nomura's structural approach to the NN-32 prioritizes rigidity and thermal management: the base casting, headstock, and guide bushing assembly are engineered to minimize thermal growth during extended production runs. For manufacturers producing orthopedic implant bodies or precision medical shafts across multi-hour production cycles, consistent dimensional accuracy from the first part to the last part of the shift is critical. Nomura's thermal management design targets this consistency — reducing the need for in-process measurement corrections that interrupt production flow and require skilled operator intervention.
The NN-32 occupies a premium position in the 32mm Swiss-type market, typically pricing between $220,000 and $320,000 — above the Korean competitor price range but competitive with established Japanese peers like the Citizen L32 and Tsugami B0326-related platforms. For manufacturers whose quality requirements justify the precision-focused engineering approach and whose applications genuinely benefit from the tighter dimensional consistency Nomura delivers, the NN-32 is a premium-value option in the 32mm class. Nomura provides dedicated application engineering and setup support, recognizing that the NN-32's capabilities are best realized by operators who understand precision Swiss-type machining requirements.
Full Specifications
| Parameter | Value |
|---|---|
| Max Bar Capacity | 32 mm (1.260 in) |
| Max Machining Length | 220 mm (8.66 in) |
| Number Of Axes | 7-axis simultaneous (X1, Z1, Y1, X2, Z2, C1, C2) |
| Main Spindle Speed | 8,000 RPM |
| Main Spindle Power | 7.5 kW (10 hp) |
| Sub Spindle Speed | 8,000 RPM |
| Sub Spindle Power | 3.7 kW (5 hp) |
| C Axis | Both main and sub-spindle |
| Y Axis | Main spindle side |
| Tool Positions | Up to 28 |
| Driven Tool Speed | 8,000 RPM |
| Guide Bushing | Yes, precision Nomura design |
| Spindle Runout | < 0.002 mm |
| Positioning Accuracy | ±0.002 mm |
| Repeatability | ±0.001 mm |
| CNC Control | Fanuc 32i-B |
| Machine Weight | 3,000 kg (6,614 lb) |
Strengths & Limitations
Strengths
- Precision-engineered guide bushing and spindle assembly achieves spindle runout below 0.002mm — critical for orthopedic implant and medical device components requiring single-digit micron dimensional accuracy at 32mm diameter
- Thermal stability management in the base, headstock, and guide bushing assembly maintains dimensional accuracy across extended production shifts without requiring frequent in-process corrections
- 8,000 RPM spindle speed with 7.5 kW power provides a strong balance of surface speed and cutting power for 32mm diameter work in titanium and stainless steel
- Japanese precision manufacturing heritage — machine-to-machine consistency and long-term accuracy retention that underpins regulatory acceptance in medical device manufacturing environments
- 28 tool positions support complex multi-feature part geometries common in orthopedics, hydraulics, and precision automotive at the 32mm size class
Limitations
- Premium pricing ($220K-$320K) versus Korean competitors at 32mm — the price premium is justified for applications requiring Nomura's precision levels but represents excess investment for standard Swiss-type production work
- Nomura DS has a smaller North American dealer and service network than Citizen or Tsugami — shops outside major manufacturing regions may have longer service response times
- Y-axis on main spindle side only at this specification tier; shops needing full Y-axis backworking capability on the sub-spindle should verify final machine configuration with Nomura's distributor
Best For
Frequently Asked Questions
01
The DS-Series is a 20mm ultra-precision platform; the NN-32 extends Nomura's precision engineering philosophy to 32mm bar capacity. The NN-32 carries forward the same commitment to spindle runout below 0.002mm, precision guide bushing performance, and thermal stability management, but with a reinforced structural design appropriate for the higher cutting loads of 32mm work in titanium and stainless steel. The NN-32 adds 7.5 kW main spindle power vs 3.7 kW on the DS-Series, and offers up to 28 tool positions for the more complex part geometries common in the 32mm production segment.
02
Medical device implant components often have roundness and cylindricity requirements in the range of 0.003-0.010mm. Achieving these tolerances consistently across a production batch requires a machine whose spindle runout is significantly smaller than the part tolerance. At 0.002mm or below, the NN-32's spindle error contributes minimally to the total part roundness error budget, enabling the machine to consistently produce parts within tight cylindricity specifications across the full production shift without thermal compensation adjustments.
03
Yes. The NN-32 supports thread whirling via a driven whirling attachment mounted in the driven tool positions. Thread whirling produces the helical thread form by orbiting multiple cutting inserts around the rotating workpiece, producing threads in a single pass with excellent surface finish and no secondary threading operation. This is the standard process for cortical and cancellous bone screw thread production, and the NN-32's driven tool system accommodates standard whirling attachment designs from Nomura and third-party suppliers.
04
The NN-32 handles the full range of bar materials used in precision Swiss-type production: titanium alloys (Ti-6Al-4V Grade 5, Grade 23 ELI for implants), cobalt-chrome alloys for orthopedic components, 316L and 17-4PH stainless steels, aluminum alloys (6061, 7075), brass and free-machining steels, and engineering plastics including PEEK and Delrin. High-pressure coolant is strongly recommended for titanium and cobalt-chrome to manage tool life and chip evacuation.
05
Lead time for a new Nomura NN-32 varies by option configuration and production queue, but is typically 4-8 months from order confirmation for a fully configured production machine with bar feeder. Nomura's Japanese manufacturing and the precision build process required for their machines means build times are longer than for some mass-produced Swiss-type platforms. Buyers should plan for extended lead times in production scheduling, and Nomura's North American distributor can provide current lead time estimates at time of inquiry.
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