Tsugami B026-III
Key Specifications
bar capacity
main spindle speed
sub spindle speed
spindle motor
axes
tool positions
Overview
The Tsugami B026-III is a 26mm-class opposed gang tool Swiss-type CNC lathe in Tsugami's third-generation B-series lineup. The B026-III page actually covers sub-variants including the B0265B (5-axis) and B0266 (6-axis), giving shops the choice between a simpler 5-axis configuration or the full 6-axis Y-axis model depending on their part requirements.
The 26mm bar capacity puts the B026-III in an important middle ground between the common 20mm machines and the larger 32mm class. There's a range of parts -- orthopedic screws, hydraulic fittings, larger connectors, small shafts -- that are just too big for 20mm but don't need a full 32mm machine. The B026-III fills that gap.
Estimated specifications based on the SS26 and B032x series suggest main and sub-spindle speeds around 200-10,000 RPM with a 3.7/5.5 kW spindle motor, which is a meaningful power upgrade over the 2.2/3.7 kW found in the 20mm S-series machines. Estimated tool capacity runs 24-32 positions with rapid traverse rates of 32-35 m/min. The convertible guide bushing system supports both Swiss and chucker operation.
Note that many specifications for the B026-III are estimated from related models in the lineup, as Tsugami doesn't publish the B026-III specs in complete detail separately. The machine runs on either the FANUC 0i-TF Plus (5-axis) or FANUC 32i-B (6-axis) control depending on the variant. For shops working in the 22-26mm part diameter range, the B026-III offers Tsugami's proven opposed gang tool precision without oversizing to a 32mm machine.
Full Specifications
| Parameter | Value |
|---|---|
| Bar Capacity | 26 mm (1.02 in) (estimated) |
| Main Spindle Speed | 200-10,000 RPM (estimated) |
| Sub Spindle Speed | 200-10,000 RPM (estimated) |
| Spindle Motor | 3.7/5.5 kW (estimated) |
| Axes | 5 or 6 (B0265B=5-axis, B0266=6-axis) |
| Tool Positions | 24-32 (estimated) |
| Rapid Traverse Rate | 32-35 m/min (estimated) |
| Guide Bushing | Convertible (Swiss/chucker) |
| CNC Control | FANUC 0i-TF Plus (5-axis) / FANUC 32i-B (6-axis) |
Specifications sourced from tsugami.co.jp — verified 2026-03-28
Strengths & Limitations
Strengths
- 26mm bar capacity fills an important gap between 20mm and 32mm machines for mid-size precision parts
- Choice of 5-axis (B0265B) or 6-axis (B0266) variants lets you match capability to part complexity
- Estimated 3.7/5.5 kW spindle motor is a significant power upgrade for heavier cuts in stainless and titanium
- Convertible guide bushing system covers both long Swiss parts and short chucker parts on one machine
- Opposed gang tool design provides fast tool-to-tool times for shorter cycle times vs. turret machines
- Third-generation (III) design benefits from Tsugami's iterative improvements in rigidity and thermal management
Limitations
- Many detailed specifications are estimated as Tsugami doesn't publish them separately for the B026-III
- 26mm is a less common bar size, which may mean fewer off-the-shelf tooling options compared to 20mm or 32mm
- Higher entry cost than 20mm machines; only justified if your parts actually need the larger bar capacity
- Sub-variant naming (B0265B, B0266) can be confusing when comparing configurations
Best For
Frequently Asked Questions
01
The B0265B is a 5-axis configuration without Y-axis, suitable for parts that only need on-center turning, drilling, and threading operations. The B0266 adds a 6th axis (Y-axis) for off-center milling, drilling, and contouring. The B0266 also gets the FANUC 32i-B control vs. the 0i-TF Plus on the B0265B. Choose based on whether your parts need off-center features.
02
If your parts are in the 22-26mm diameter range, a 20mm machine simply can't hold them and a 32mm machine is more machine (and money) than you need. The 26mm class is right-sized for the part, which means better spindle utilization, appropriate power, and lower investment. The trade-off is that 26mm is a less common bar size with somewhat fewer tooling options.
03
The estimated specs are derived from closely related models in the Tsugami lineup -- the SS26 series and B032x series. They're reasonable approximations but shouldn't be treated as guaranteed specifications. For purchasing decisions, always verify current specs directly with your Tsugami dealer or Tsugami America.
04
It depends on the variant. The 5-axis B0265B uses the FANUC 0i-TF Plus, which is a capable mid-range control. The 6-axis B0266 steps up to the FANUC 32i-B for the added axis coordination. Both are proven FANUC platforms with good third-party CAM support.
05
Yes. The convertible guide bushing system allows switching between Swiss mode (with guide bushing) for long parts and chucker mode (without) for shorter parts. In chucker mode, you don't need ground bar stock, which reduces material costs for short-part production.
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