DEEP RESEARCH · SPG
SPG: Localizing Precision Reducers in the Robot Value Chain
A business model where appliance-motor cash flow funds growth in robot precision reducers.
0. Bottom line first
Q3 2025 revenue of KRW 115.0bn, OP of KRW 8.5bn, and OPM of 7.4% show a business mix shift from standard motors toward industrial and robot precision reducers.
1. Earnings
| Item | Q3 2025 | YoY | QoQ |
|---|---|---|---|
| Revenue | KRW 115.0bn | +6.5% | +2.7% |
| COGS | KRW 93.0bn | +3.9% | +1.6% |
| Gross profit | KRW 22.0bn | +18.9% | +7.3% |
| SG&A | KRW 13.5bn | +12.5% | +6.3% |
| OP | KRW 8.5bn | +30.8% | +9.0% |
| OPM | 7.4% | +1.4%p | +0.4%p |
| Net income | KRW 7.2bn | +24.1% | +5.9% |
2. Core logic
Reducers account for roughly 30-40% of robot cost, and the market has long been dominated by Japans Harmonic Drive Systems and Nabtesco. SPG is positioned as a Korean alternative with planetary, SH, and SR reducer lineups, 20-30% lower pricing, and lead times within four weeks according to the source.
Standard motors are defended by customers such as Samsung Electronics, LG Electronics, Whirlpool, and GE, plus BLDC demand in premium appliances. Industrial geared motors benefit from U.S. reshoring and IRA-driven North American automation investment. SR/SH reducers are the growth engine for wafer transfer, battery-process robots, and cobots.
3. Growth and valuation
- SH reducers for cobots are described as entering shortage conditions.
- AGV/AMR expands into wheel-drive modules for logistics and factories.
- Humanoids can sharply raise reducer content with more than 40 degrees of freedom, with the market discussed around 2026-2027.
- Reducer replacement cycles of 3-5 years can create recurring revenue.
- The SOTP logic applies 10x PER to standard motors and 30x or more to robot reducers.
- The source views 2025E PER of 18x as undervalued versus robot peers and presents more than 50% market-cap upside.
4. Risk
Prolonged yen weakness could restore Japanese competitors price competitiveness. The key evidence to watch is continued reducer revenue mix and margin improvement.