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MHI HASEG Worm Gear Reducer SCHV Series is a single‑stage, vertical‑shaft hollow‑output worm gear reducer that combines compact design with high efficiency and self‑locking safety. Engineered with MHI HASEG’s precision‑machined Niemann tooth profile and robust materials, the SCHV Series delivers reliable torque transmission, space‑saving installation, and easy maintenance for a variety of vertical power‑transmission applications.

Key Features
1. Vertical Hollow‑Shaft Configuration
The SCHV Series features a vertical input and hollow output shaft, enabling direct coupling of driven elements (e.g., shafts, spindles) without additional adapters, ideal for space‑constrained or top‑down installations.
2. High‑Efficiency Niemann Tooth Profile
Special concave‑convex gear flanks maximize surface contact, promote uniform load distribution, and retain a stable oil film, resulting in smooth, low‑noise operation with minimal wear.
3. Self‑Locking Safety
Low lead‑angle worm geometry prevents back‑driving, providing built‑in holding power under load without the need for external brakes—crucial for vertical lifts, tilting equipment, and hoists.
4. Robust Construction & Durability
Hardened alloy‑steel worm shafts and high‑grade bronze worm wheels resist shock and axial/radial loads. Housing and bearing materials are selected for extended service life in demanding environments.
5. Easy Maintenance & Lubrication
Standard splash lubrication uses specified Klüber SYNTHESO HT or SYNTH GH6 oils. Accessible oil‑level gauges, filler/drain ports, and external grease nipples simplify periodic servicing.
6. JIS‑Compliant Dimensions
All mounting faces, shaft fits, and tolerances adhere to JIS B1301‑1976 standards (W1/W2 h9/N9), ensuring interchangeability and straightforward integration into existing systems.
Typical Specifications
| Specification |
SCHV Series |
| Center Distance (mm) |
100, 125, 160, 200, 225, 250, 280, 320, 360, 400, 450, 500 |
| Reduction Ratios (iₙ) |
315, 630, 1000, 1250, 1600 |
| Rated Output Torque (T₂N, Nm) |
Size‑dependent (consult torque tables) |
| Max Input Speed (n₁, min⁻¹) |
1800 / 1500 / 1000 / 750 / 500 / 300 |
| Efficiency (η) |
Up to 90 % (ratio‑dependent) |
| Lubrication |
Splash (standard); forced‑lubrication optional |
| Housing Material |
Cast iron (standard) |
| Operating Temperature |
–10 °C to +40 °C |
| Protection Class |
IP54 (standard) |
Applications
- Vertical Mixers & Agitators: Direct‑drive mounting with self‑locking safety.
- Hoists & Lifting Devices: Secure load holding without brakes.
- Vertical Conveyors: Compact, hollow‑shaft drive for space‑saving installations.
- Packaging & Food Machinery: Hygienic design with contained lubrication.
- Textile & Chemical Equipment: Vibration‑free, low‑noise vertical drives.
Why Choose the SCHV Series?
- Space‑Saving Hollow Output: Eliminates need for couplings or additional shafts.
- Built‑In Safety: Self‑locking worm gear prevents unintended reverse motion.
- High Durability: Niemann profile and premium materials offer long service life.
- Simple Integration: JIS‑standard dimensions and dial‑in mounts streamline installation.
- Comprehensive Support: Detailed manuals, torque tables, and expert guidance from Melink Automation.
For torque curves, dimensional drawings, and selection assistance, please consult the MHI HASEG catalog or contact your Melink Automation representative.
MHI HASEG Worm Gear Reducer SCHV Series Size:100~250 (Output Shaft Arrangement: Left)
| SCHV |
Gear Ratio: 315~1600 |
MHI HASEG Worm Gear Reducer SCHV Series Size |
| 100 |
125 |
160 |
200 |
225 |
250 |
| Output Shaft Arrangement: Left |
315 |
SCHV100LLO-315 |
SCHV125LLO-315 |
SCHV160LLO-315 |
SCHV200LLO-315 |
SCHV225LLO-315 |
SCHV250LLO-315 |
| 630 |
SCHV100LLO-630 |
SCHV125LLO-630 |
SCHV160LLO-630 |
SCHV200LLO-630 |
SCHV225LLO-630 |
SCHV250LLO-630 |
| 1000 |
SCHV100LLO-1000 |
SCHV125LLO-1000 |
SCHV160LLO-1000 |
SCHV200LLO-1000 |
SCHV225LLO-1000 |
SCHV250LLO-1000 |
| 1250 |
SCHV100LLO-1250 |
SCHV125LLO-1250 |
SCHV160LLO-1250 |
SCHV200LLO-1250 |
SCHV225LLO-1250 |
SCHV250LLO-1250 |
| 1600 |
SCHV100LLO-1600 |
SCHV125LLO-1600 |
SCHV160LLO-1600 |
SCHV200LLO-1600 |
SCHV225LLO-1600 |
SCHV250LLO-1600 |
| SCHV |
Gear Ratio: 315~1600 |
MHI HASEG Worm Gear Reducer SCHV Series Size |
| 100 |
125 |
160 |
200 |
225 |
250 |
| Output Shaft Arrangement: Left |
315 |
SCHV100LLU-315 |
SCHV125LLU-315 |
SCHV160LLU-315 |
SCHV200LLU-315 |
SCHV225LLU-315 |
SCHV250LLU-315 |
| 630 |
SCHV100LLU-630 |
SCHV125LLU-630 |
SCHV160LLU-630 |
SCHV200LLU-630 |
SCHV225LLU-630 |
SCHV250LLU-630 |
| 1000 |
SCHV100LLU-1000 |
SCHV125LLU-1000 |
SCHV160LLU-1000 |
SCHV200LLU-1000 |
SCHV225LLU-1000 |
SCHV250LLU-1000 |
| 1250 |
SCHV100LLU-1250 |
SCHV125LLU-1250 |
SCHV160LLU-1250 |
SCHV200LLU-1250 |
SCHV225LLU-1250 |
SCHV250LLU-1250 |
| 1600 |
SCHV100LLU-1600 |
SCHV125LLU-1600 |
SCHV160LLU-1600 |
SCHV200LLU-1600 |
SCHV225LLU-1600 |
SCHV250LLU-1600 |
| SCHV |
Gear Ratio: 315~1600 |
MHI HASEG Worm Gear Reducer SCHV Series Size |
| 100 |
125 |
160 |
200 |
225 |
250 |
| Output Shaft Arrangement: Left |
315 |
SCHV100LLB-315 |
SCHV125LLB-315 |
SCHV160LLB-315 |
SCHV200LLB-315 |
SCHV225LLB-315 |
SCHV250LLB-315 |
| 630 |
SCHV100LLB-630 |
SCHV125LLB-630 |
SCHV160LLB-630 |
SCHV200LLB-630 |
SCHV225LLB-630 |
SCHV250LLB-630 |
| 1000 |
SCHV100LLB-1000 |
SCHV125LLB-1000 |
SCHV160LLB-1000 |
SCHV200LLB-1000 |
SCHV225LLB-1000 |
SCHV250LLB-1000 |
| 1250 |
SCHV100LLB-1250 |
SCHV125LLB-1250 |
SCHV160LLB-1250 |
SCHV200LLB-1250 |
SCHV225LLB-1250 |
SCHV250LLB-1250 |
| 1600 |
SCHV100LLB-1600 |
SCHV125LLB-1600 |
SCHV160LLB-1600 |
SCHV200LLB-1600 |
SCHV225LLB-1600 |
SCHV250LLB-1600 |
MHI HASEG Worm Gear Reducer SCHV Series Size: 100~250(Output Shaft Arrangement: Right)
| SCHV |
Gear Ratio: 315~1600 |
MHI HASEG Worm Gear Reducer SCHV Series Size |
| 100 |
125 |
160 |
200 |
225 |
250 |
| Output Shaft Arrangement: Left |
315 |
SCHV100RRO-315 |
SCHV125RRO-315 |
SCHV160RRO-315 |
SCHV200RRO-315 |
SCHV225RRO-315 |
SCHV250RRO-315 |
| 630 |
SCHV100RRO-630 |
SCHV125RRO-630 |
SCHV160RRO-630 |
SCHV200RRO-630 |
SCHV225RRO-630 |
SCHV250RRO-630 |
| 1000 |
SCHV100RRO-1000 |
SCHV125RRO-1000 |
SCHV160RRO-1000 |
SCHV200RRO-1000 |
SCHV225RRO-1000 |
SCHV250RRO-1000 |
| 1250 |
SCHV100RRO-1250 |
SCHV125RRO-1250 |
SCHV160RRO-1250 |
SCHV200RRO-1250 |
SCHV225RRO-1250 |
SCHV250RRO-1250 |
| 1600 |
SCHV100RRO-1600 |
SCHV125RRO-1600 |
SCHV160RRO-1600 |
SCHV200RRO-1600 |
SCHV225RRO-1600 |
SCHV250RRO-1600 |
| SCHV |
Gear Ratio: 315~1600 |
MHI HASEG Worm Gear Reducer SCHV Series Size |
| 100 |
125 |
160 |
200 |
225 |
250 |
| Output Shaft Arrangement: Left |
315 |
SCHV100RRU-315 |
SCHV125RRU-315 |
SCHV160RRU-315 |
SCHV200RRU-315 |
SCHV225RRU-315 |
SCHV250RRU-315 |
| 630 |
SCHV100RRU-630 |
SCHV125RRU-630 |
SCHV160RRU-630 |
SCHV200RRU-630 |
SCHV225RRU-630 |
SCHV250RRU-630 |
| 1000 |
SCHV100RRU-1000 |
SCHV125RRU-1000 |
SCHV160RRU-1000 |
SCHV200RRU-1000 |
SCHV225RRU-1000 |
SCHV250RRU-1000 |
| 1250 |
SCHV100RRU-1250 |
SCHV125RRU-1250 |
SCHV160RRU-1250 |
SCHV200RRU-1250 |
SCHV225RRU-1250 |
SCHV250RRU-1250 |
| 1600 |
SCHV100RRU-1600 |
SCHV125RRU-1600 |
SCHV160RRU-1600 |
SCHV200RRU-1600 |
SCHV225RRU-1600 |
SCHV250RRU-1600 |
| SCHV |
Gear Ratio: 315~1600 |
MHI HASEG Worm Gear Reducer SCHV Series Size |
| 100 |
125 |
160 |
200 |
225 |
250 |
| Output Shaft Arrangement: Left |
315 |
SCHV100RRB-315 |
SCHV125RRB-315 |
SCHV160RRB-315 |
SCHV200RRB-315 |
SCHV225RRB-315 |
SCHV250RRB-315 |
| 630 |
SCHV100RRB-630 |
SCHV125RRB-630 |
SCHV160RRB-630 |
SCHV200RRB-630 |
SCHV225RRB-630 |
SCHV250RRB-630 |
| 1000 |
SCHV100RRB-1000 |
SCHV125RRB-1000 |
SCHV160RRB-1000 |
SCHV200RRB-1000 |
SCHV225RRB-1000 |
SCHV250RRB-1000 |
| 1250 |
SCHV100RRB-1250 |
SCHV125RRB-1250 |
SCHV160RRB-1250 |
SCHV200RRB-1250 |
SCHV225RRB-1250 |
SCHV250RRB-1250 |
| 1600 |
SCHV100RRB-1600 |
SCHV125RRB-1600 |
SCHV160RRB-1600 |
SCHV200RRB-1600 |
SCHV225RRB-1600 |
SCHV250RRB-1600 |
MHI HASEG Worm Gear Reducer SCHV Series Size: 280~500(Output Shaft Arrangement: Left)
| SCHV |
Gear Ratio: 315~1600 |
MHI HASEG Worm Gear Reducer SCHV Series Size |
| 280 |
320 |
360 |
400 |
450 |
500 |
| Output Shaft Arrangement: Left |
315 |
SCHV280LLO-315 |
SCHV320LLO-315 |
SCHV360LLO-315 |
SCHV400LLO-315 |
SCHV450LLO-315 |
SCHV500LLO-315 |
| 630 |
SCHV280LLO-630 |
SCHV320LLO-630 |
SCHV360LLO-630 |
SCHV400LLO-630 |
SCHV450LLO-630 |
SCHV500LLO-630 |
| 1000 |
SCHV280LLO-1000 |
SCHV320LLO-1000 |
SCHV360LLO-1000 |
SCHV400LLO-1000 |
SCHV450LLO-1000 |
SCHV500LLO-1000 |
| 1250 |
SCHV280LLO-1250 |
SCHV320LLO-1250 |
SCHV360LLO-1250 |
SCHV400LLO-1250 |
SCHV450LLO-1250 |
SCHV500LLO-1250 |
| 1600 |
SCHV280LLO-1600 |
SCHV320LLO-1600 |
SCHV360LLO-1600 |
SCHV400LLO-1600 |
SCHV450LLO-1600 |
SCHV500LLO-1600 |
| SCHV |
Gear Ratio: 315~1600 |
MHI HASEG Worm Gear Reducer SCHV Series Size |
| 280 |
320 |
360 |
400 |
450 |
500 |
| Output Shaft Arrangement: Left |
315 |
SCHV280LLU-315 |
SCHV320LLU-315 |
SCHV360LLU-315 |
SCHV400LLU-315 |
SCHV450LLU-315 |
SCHV500LLU-315 |
| 630 |
SCHV280LLU-630 |
SCHV320LLU-630 |
SCHV360LLU-630 |
SCHV400LLU-630 |
SCHV450LLU-630 |
SCHV500LLU-630 |
| 1000 |
SCHV280LLU-1000 |
SCHV320LLU-1000 |
SCHV360LLU-1000 |
SCHV400LLU-1000 |
SCHV450LLU-1000 |
SCHV500LLU-1000 |
| 1250 |
SCHV280LLU-1250 |
SCHV320LLU-1250 |
SCHV360LLU-1250 |
SCHV400LLU-1250 |
SCHV450LLU-1250 |
SCHV500LLU-1250 |
| 1600 |
SCHV280LLU-1600 |
SCHV320LLU-1600 |
SCHV360LLU-1600 |
SCHV400LLU-1600 |
SCHV450LLU-1600 |
SCHV500LLU-1600 |
MHI HASEG Worm Gear Reducer SCHV Series Size: 280~500(Output Shaft Arrangement: Right)
| SCHV |
Gear Ratio: 315~1600 |
MHI HASEG Worm Gear Reducer SCHV Series Size |
| 280 |
320 |
360 |
400 |
450 |
500 |
| Output Shaft Arrangement: Right |
315 |
SCHV280RRO-315 |
SCHV320RRO-315 |
SCHV360RRO-315 |
SCHV400RRO-315 |
SCHV450RRO-315 |
SCHV500RRO-315 |
| 630 |
SCHV280RRO-630 |
SCHV320RRO-630 |
SCHV360RRO-630 |
SCHV400RRO-630 |
SCHV450RRO-630 |
SCHV500RRO-630 |
| 1000 |
SCHV280RRO-1000 |
SCHV320RRO-1000 |
SCHV360RRO-1000 |
SCHV400RRO-1000 |
SCHV450RRO-1000 |
SCHV500RRO-1000 |
| 1250 |
SCHV280RRO-1250 |
SCHV320RRO-1250 |
SCHV360RRO-1250 |
SCHV400RRO-1250 |
SCHV450RRO-1250 |
SCHV500RRO-1250 |
| 1600 |
SCHV280RRO-1600 |
SCHV320RRO-1600 |
SCHV360RRO-1600 |
SCHV400RRO-1600 |
SCHV450RRO-1600 |
SCHV500RRO-1600 |
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