Product Overview
The Flender H2SH16 represents the upper tier of the universal gear unit series, specifically built to handle the rigorous demands of 315kW power transmission. In large-scale operations like mining and steel production, the H2SH16 serves as the heart of the drive train. Its housing is optimized using CAD-based stress analysis to minimize weight while maximizing torsional rigidity. The helical gears are manufactured from high-alloy case-hardening steel, precisely ground to ensure a perfect contact pattern. This results in an exceptionally high power density, allowing the unit to transmit immense torque within a relatively compact footprint compared to conventional large-scale gearboxes.
Technical Parameter Table
| Technical Attribute | Specification Detail |
| Rated Input Power ($P_{n}$) | 315 kW |
| Nominal Output Torque ($T_{2n}$) | 175,000 Nm |
| Output Shaft Diameter | 200 mm / 220 mm |
| Input Shaft Diameter | 85 mm / 95 mm |
| Center Distance | Optimized for Size 16 Frame |
| Gear Quality Class | DIN 3962 Grade 4 (Ground) |
| Standard Lubrication | Splash / Pressure Lubrication Ready |
| Approximate Weight | 4,250 kg |
Product Features: H2SH16 Exclusive Highlights
Vibration-Damping Housing Geometry: The H2SH16 features a specialized "monoblock-style" reinforced casing that effectively dampens high-frequency resonance, which is critical when managing the 315kW power pulse in continuous-duty cycles.
Extended Bearing Support Spacing: To accommodate the 175kNm torque load, the size 16 unit utilizes an widened bearing arrangement. This reduces the internal tilting moments on the shafts, significantly extending the service life of the spherical roller bearings.
High-Volume Thermal Management: The internal oil baffles are specifically shaped to facilitate rapid oil circulation toward the housing walls, maximizing the passive cooling capacity and maintaining stable oil film thickness under extreme pressure.
Accessories & Modular Solutions
Monitoring & Cooling Options
For a 315kW drive, precision monitoring is essential. The H2SH16 comes standard with prep-points for:
- Oil Level & Temperature Switches: Integrated sensors for real-time monitoring of the lubricant state.
- Forced Lubrication Pump: An optional shaft-driven or motor-driven pump for applications with low input speeds or tilted installation angles.
Combination Drive Solutions The H2SH16 is frequently paired with Flender ARPEX all-steel couplings or FLUDEX fluid couplings. This combination allows for a "soft start," protecting the gearbox internals from the high starting current and torque spikes of a 315kW motor, particularly in conveyor or crusher applications.
Related Model Reference Table
| Model Variant | Connection Interface | Nominal Power Range | Shaft Orientation |
| H2SH15 | Solid Shaft | 250 kW | Parallel |
| H2DH16 | Hollow Shaft (Shrink Disk) | 315 kW | Parallel |
| B2SH16 | Solid Shaft | 315 kW | Right-Angle |
| H2SH17 | Solid Shaft | 400 kW | Parallel |
Industry Applications
Mining & Quarrying: Drive units for primary gyratory crushers and high-capacity overland conveyors.
Metal Production: Heavy-duty drives for blooming mills, slab shears, and wire rod mills.
Cement & Materials: Main drive systems for large horizontal ball mills and rotary kilns.
Marine & Terminal: High-torque winch drives and gantry travel units for bulk loaders.
FAQ
1. Is the 315kW rating fixed for all H2SH16 units?
The 315kW is a nominal rating. The actual permissible power depends on the exact gear ratio and the required service factor. We recommend a full technical verification for applications with heavy shock loads.
2. Does the H2SH16 require an external oil cooling system?
In many standard ambient conditions, the H2SH16 can operate with natural cooling. However, if the ambient temperature exceeds 35°C or the duty cycle is 100%, an external air/oil cooler or internal cooling coil is highly recommended.
3. What is the expected oil change interval for this large-size unit?
When using high-performance synthetic gear oils, the interval can reach up to 20,000 operating hours. For mineral oils, we recommend changes every 5,000 to 10,000 hours, depending on the thermal load.
4. Can the H2SH16 be supplied with a hollow shaft?
Yes. If your application requires a shaft-mounted design, you should refer to the H2DH16 (Shrink Disk) or H2AH16 (Keyway) models, which utilize the same internal gear geometry.
5. How is the unit protected during long-term outdoor storage?
Every unit is treated with internal VCI (Volatile Corrosion Inhibitors) and finished with a high-durability epoxy coating system. Shaft ends are protected with a wax-based anti-corrosion film.
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