What is a servo press?

A servo press uses servo motors for precise force and position control during forming operations.

How do I calculate servo press tonnage?

Use our free tonnage calculator at servopress.club/tonnage-calculator.html

Aida DSF-N1 vs Komatsu H1F - direct drive comparison

ed_progressive

We evaluated both the Aida DSF-N1 and Komatsu H1F for our new direct drive line. Here's how they compared in our testing.

**The basics
**
Both the Aida DSF-N1 and Komatsu H1F are direct-drive servo presses without gear reducers. Here's a comparison for buyers evaluating both.

**Drive System
**
**Aida DSF-N1:** Uses Aida's proprietary direct-drive motor mounted directly on the crankshaft. No gear reducer, no belt. Motor torque directly drives the slide.

**Komatsu H1F:** Uses Komatsu's direct-drive system with a large-diameter low-speed torque motor. Similar concept to Aida but different motor geometry.

Both achieve BDC repeatability of +/-0.005mm or better.

**Speed and Tonnage
**
| Spec | Aida DSF-N1-200 | Komatsu H1F-200 |
|------|---------|----------|
| Tonnage | 200T | 200T |
| Max SPM | 120 | 100 |
| Stroke | 200mm | 200mm |
| BDC repeat | +/-0.005mm | +/-0.005mm |

Aida has a speed advantage at the same tonnage class.

**Control System**

**Aida DSF-N1:** Yaskawa Sigma-7 servo drives, Aida's own HMI. Strong Yaskawa support network.

**Komatsu H1F:** Mitsubishi servo drives, Komatsu's own HMI. Strong in Toyota supply chain.

**Price and Lead Time
**
Both are similar in price (premium direct-drive segment). Komatsu typically has shorter lead times in Asia; Aida has better availability in North America.

**Verdict**

Choose Aida DSF-N1 if: you need higher SPM, you are in North America, or your maintenance team knows Yaskawa.

Choose Komatsu H1F if: you are in Japan/Asia, you supply Toyota, or you prefer Mitsubishi drives.

pete_retro

I've worked on both. The Aida DSF-N1's direct drive is cleaner —no gear reducer means no backlash and no gear oil to maintain. But the Komatsu H1F's link mechanism gives you more force near BDC for the same motor size. For blanking: Aida. For deep drawing: Komatsu. That's my simplified recommendation.

sarahJ_mfg

We evaluated both for a new connector stamping line. Went with Aida DSF-N1 because of the higher SPM capability (120 SPM vs 90 SPM on the Komatsu at our stroke length). For our application —high speed, light forming —the Aida was the clear winner. But I'd choose differently for a heavy forming application.

toolndye_dave

Ran both side by side for about 6 months when we were deciding on our new line. Few things nobody mentions in the brochures:

The Aida DSF-N1 servo tuning software is way more intuitive. You can build a motion profile in maybe 10 minutes. The Komatsu H1F controller works fine but the interface feels like it was designed in 2005 — lots of parameter numbers instead of graphical curve editing. Our operators picked up the Aida in a day, the Komatsu took a week of training.

Maintenance difference is real though. The Aida direct drive has basically zero drivetrain maintenance — no gears, no belt, no reducer oil changes. The Komatsu H1F still has the link mechanism which needs periodic lubrication and inspection. Over 5 years that adds up to maybe $8-12K in maintenance labor and parts difference.

One thing where the Komatsu wins hands down: force at low speed. If you need to do slow deep draws at high tonnage, the link mechanism multiplies the motor torque near BDC. The Aida needs a bigger motor to match that, which means more cost upfront. For our progressive die work at 80+ SPM it did not matter, but for transfer press applications running at 15-25 SPM it would.

derek_tooling

Ran a DSF-N1-2000 next to an H1F-200 for the better part of two years on similar progressive work, so I can speak to the day-to-day differences rather than spec sheets.

The DSF feels tighter at low speed. Below 30 SPM where you do most of your fine-blank and coining work, the velocity ripple is visibly lower on the Aida ??we measured ?2.5% vs the Komatsu's ?4-5% at 15 SPM. For most stamping it doesn't matter, but on cosmetic surfaces and tight-clearance fineblanking it shows up as a finish difference.

The H1F has a stiffer frame in our judgement. Under eccentric loads the Komatsu held parallelism better ??we saw about 0.015mm less BDC tilt at 80% rated tonnage off-center. Probably the wider tie-rod spacing.

Where they diverge most is the operator interface. Komatsu's HMI is more polished but locked-down ??getting at advanced motion editing requires a service password and you call them. Aida lets the maintenance team build custom motion templates without a service call. For a job shop that flexibility is worth real money over a year.

Parts and service: in the Midwest US the Aida network is denser and lead times have been better. In southeast Asia Komatsu has the edge. Buy the network you have, not the spec sheet you want.