Kingwood Ships Two JWZL-688D Pellet Mills to Malaysia
Kingwood · May 26, 2026
JWZL-688D Order Dispatched to Malaysia
Kingwood has completed dispatch of two JWZL-688D vertical biomass pellet mills to a buyer in Malaysia. The shipment marks continued export demand for Kingwood’s mid-to-high capacity ring die pellet mill range across Southeast Asia, where mixed wood residue and high-moisture demolition timber are common industrial feedstocks.
The JWZL-688D is the dual-motor variant in the JWZL-688 series. Full technical specifications for the shipped units are as follows:
| No. | Item | Specification |
|---|---|---|
| 1 | Capacity | 3–3.5 t/h |
| 2 | Main Motor Power | 200 kW Servo Motor |
| 3 | Feeding Auger Motor | 3 kW |
| 4 | Forced Feeding Motor | 2.2 kW |
| 5 | Pellet Percentage | ≥90% |
| 6 | Powder Percentage | ≤10% |
| 7 | Noise | ≤93 dB(A) |
| 8 | Dimensions (L×W×H) | 3,530 × 1,580 × 2,390 mm |
| 9 | Weight | ~9.5 t |
For buyers evaluating multiple capacity tiers, Kingwood’s full vertical pellet mill range spans from the JWZL-420 (1–1.5 t/h) through to the JWZL-928 (4–5 t/h).
TYL-Series Liquid-Cooled Permanent Magnet Servo Motor: Technical Rationale
The defining upgrade on the JWZL-688D relative to standard-motor configurations is the TYL-series liquid-cooled permanent magnet synchronous servo motor. This motor class meets the GB30253-2013 energy efficiency Level 2 threshold — the second-highest tier under China’s mandatory efficiency grading for permanent magnet synchronous motors.
Why this matters for industrial pellet production:
1. Reduced energy consumption under sustained load The stator uses high-permeability, low-loss silicon steel laminations combined with high-frequency windings. The rotor is built with high-performance NdFeB (neodymium-iron-boron) magnetic steel and carries no excitation current. The result is a high power factor and reduced iron losses across continuous constant-load operation — directly relevant in a pellet mill running multiple shifts.
2. Superior thermal management Cooling is achieved via circulating water or oil rather than ambient air. This maintains stable winding temperatures under heavy or variable biomass feed conditions, extending motor service life compared with conventional IP54-rated air-cooled asynchronous motors.
3. IP55 enclosure rating The TYL-series motor achieves a minimum IP55 ingress protection rating. In biomass processing environments — where fine wood dust and moisture are persistent — the step up from IP54 to IP55 meaningfully reduces the risk of contaminant ingress into motor windings.
4. Drop-in dimensional compatibility Kingwood engineered the TYL-series mounting interface to match the footprint and bolt pattern of equivalent-power three-phase asynchronous motors. Operators replacing an older motor configuration require no modification to the machine base or drivetrain alignment.
Application: High-Moisture and Mixed Feedstocks
The JWZL-688D is particularly well-matched to feedstock profiles common in Malaysia and broader Southeast Asia: mixed tropical hardwood residues, construction and demolition timber with variable moisture, and plantation thinnings. The high-torque servo drive maintains consistent ring die pressure and pellet density across feedstock moisture fluctuations that would cause throughput instability in lower-rated drive configurations.
Kingwood’s wet-feed complete pellet production lines — which integrate crushing, drying, fine grinding, pelletizing, and packaging into a fully enclosed, dust-controlled process — are designed to handle exactly these high-moisture input conditions at scales up to 200,000 metric tons per year. For reference, Kingwood’s 24 t/h Vietnam wood pellet production line demonstrates comparable Southeast Asian deployment at commercial scale.
About Kingwood
Jiangsu Kingwood Industrial Co., Ltd. has operated from Liyang Zhongguancun Industrial Park, Jiangsu Province, China since 1999. The company holds ISO 9001, ISO 14001, and CE certification, is listed on the NEEQ (stock code: 871765), and has planned and designed over 2,000 biomass pellet production line projects across 30 countries. Kingwood’s Three-Standardization Framework — covering integrated, dust-free, and automated production lines — underpins its equipment design philosophy across the full product range.
FAQ
What is the rated capacity of the JWZL-688D biomass pellet mill?
The JWZL-688D delivers 3–3.5 metric tons per hour of biomass pellets, with a pellet yield of ≥90% and powder fraction ≤10%.
What motor does the JWZL-688D use and why does it matter?
It uses a 200 kW TYL-series liquid-cooled permanent magnet synchronous servo motor, which meets GB30253-2013 energy efficiency Level 2. Compared with conventional air-cooled asynchronous motors, it offers higher power factor, better heat dissipation via circulating water or oil cooling, and an IP55 protection rating versus IP54.
How does the liquid-cooled servo motor save energy in continuous pellet production?
The rotor uses high-performance NdFeB magnetic steel with no excitation current draw. The stator employs high-permeability, low-loss silicon steel laminations and high-frequency windings, reducing iron losses under continuous constant or periodic load — delivering measurable energy savings over a full production shift.
Is the JWZL-688D motor mechanically interchangeable with a standard asynchronous motor?
Yes. Kingwood designed the TYL-series motor mounting dimensions and interface to match equivalent-power three-phase asynchronous motors, enabling drop-in replacement without modifying the machine frame.
What raw materials is the JWZL-688D suited for?
The JWZL-688D is particularly well-suited to high-moisture or mixed feedstocks such as miscellaneous firewood and demolition timber with elevated moisture content, where its high-torque servo drive maintains stable throughput.
What certifications does Kingwood hold relevant to this equipment?
Kingwood holds ISO 9001, ISO 14001, and CE certification, and is recognized as a Jiangsu Provincial High-Tech Enterprise and Jiangsu Provincial Specialized & Innovative Niche Leader.
Where is Kingwood manufactured and how long has the company been operating?
Kingwood (Jiangsu Kingwood Industrial Co., Ltd.) has operated from Liyang Zhongguancun Industrial Park, Jiangsu Province, China since 1999 — over 27 years of R&D and manufacturing in biomass pellet equipment.
- The JWZL-688D main drive motor meets GB30253-2013 permanent magnet synchronous motor energy efficiency Level 2, the second-highest efficiency tier under China's mandatory motor efficiency standard. (2013, GB30253-2013, Minimum Allowable Values of Energy Efficiency and Energy Efficiency Grades for Permanent Magnet Synchronous Motors, Standardization Administration of China)
- Kingwood has planned and designed over 2,000 biomass pellet production line projects across 30 countries since its founding in 1999. (2025, Jiangsu Kingwood Industrial Co., Ltd. company profile)