Description
EP-GMSS50 — Stainless Steel Worm Gear Reducer Overview
Mid-range pharmaceutical, food, and chemical processing drives requiring the full six-face machined box standard with expanded motor compatibility — covering 63, 71, and 80 IEC frames up to 0.37 kW — choose the EP-GMSS50 Stainless Steel Worm Gear Reducer. As the central model in the GMSS range, the GMSS50 adds 80-frame motor support and introduces the D-type output flange option (unavailable on GMSS30/40), enabling direct vessel-head flange coupling without shaft couplings. Its all-six-face precision-machined 304 SS housing, 304 SS wheel core, and five mounting positions make it the preferred specification for GMP mixing vessel drives, CIP-washdown conveyor systems, and cosmetics filling-line gearboxes where surface cleanliness, material traceability, and multiple installation orientations are simultaneously required.
| Specification | Value |
|---|---|
| Model | EP-GMSS50 |
| Housing | 304 SS — all 6 faces precision-machined, electropolished |
| Wheel | 12-2 tin bronze (ZCuSn12-2) rim, 304 SS core |
| Oil | Fully synthetic ISO VG 150 (H1 food-grade on request) |
| Ratios | 7.5–100:1 |
| Mounting Positions | A, B, C, D, E |
| Output Options | A-type single shaft, B-type double shaft, D-type output flange, E-type torque arm |
| IEC Motor Frames | 63/71/80 IEC (B5 & B14) |
| Power Range | 0.12–0.37 kW |
Technical Specifications — EP-GMSS50
Technical Specification Summary
| Parameter | EP-GMSS50 Specification |
|---|---|
| Housing Material | 304 SS — CNC-machined all 6 faces, electropolished Ra ≤ 0.8 µm |
| Worm Wheel | 12-2 tin bronze rim, 304 SS core — no ferrous internal components |
| Worm Shaft | Hardened alloy steel, carburised & ground, 55–60 HRC |
| Lubrication | Fully synthetic ISO VG 150 (H1 food-grade on request) |
| Mounting | 5 positions: A / B / C / D / E |
| Output Options | A-type single shaft, B-type double shaft, D-type output flange, E-type torque arm |
| IEC Motor Frames | 63/71/80 IEC (B5 & B14) |
| Power Range | 0.12–0.37 kW |
| Speed Ratios | 7.5–100:1 |
| Certifications | CE Marking, ISO 9001, FDA 21 CFR 177, EHEDG Compatible |
| Surface Finish | Ra ≤ 0.8 µm electropolished — all external faces |
| Ambient Temperature | -20°C to +50°C standard |
GMSS vs SSRV vs SSVF — Why Choose Box Series?
| Feature | GMSS (Box) | SSRV (RV Cast) | SSVF (VF Cast) |
|---|---|---|---|
| Faces Machined | All 6 | Functional only | Functional only |
| Wheel Core | 304 SS | Carbon steel | Carbon steel |
| Mounting Positions | 5 (A/B/C/D/E) | Foot/torque arm | Face-mount only |
| Surface Finish | Ra ≤ 0.8 µm all faces | Ra varies | Ra varies |
| Premium Appearance | Yes | No | Partial |
Core Features & Benefits
D-Type Output Flange — First Available in GMSS from Size 50
The D-type output flange, unavailable on GMSS30/40, is introduced at GMSS50 level. It enables direct rigid coupling to mixing vessel heads and agitator flanges without a shaft coupling — reducing alignment labour and eliminating coupling maintenance.
80-Frame Motor Compatibility — Up to 0.37 kW Continuous Input
Adding 80B5 and 80B14 flange options (in addition to 63 and 71 frames), the GMSS50 extends the power range to 0.37 kW — adequate for most mid-range mixing vessel, conveyor, and pump-drive applications in food and pharma.
Six-Face Box + 304 SS Wheel Core + H1 Oil — Triple-Layer Material Compliance
Three layers of food/pharma material compliance: (1) 304 SS all-face housing, (2) 304 SS wheel core (no ferrous internal parts), (3) H1 food-grade synthetic oil fill on request. Satisfies even the most stringent equipment material audits.
Compact Square Box — Easier Cleaning Validation Than Cast Competitors
The GMSS50 box format with all-machined flat faces passes cleaning validation requirements that round-housing cast reducers often struggle with. Flat faces with no external ribs or pockets are directly measurable and reproducibly cleanable.
Fully Synthetic Oil — 2,000-Hour Service Interval
Factory-filled with fully synthetic ISO VG 150 worm gear oil, achieving 2,000-hour service intervals versus 500 hours for mineral oil — halving planned maintenance frequency in continuous production.
Industry Applications & Typical Use Cases
GMP Pharmaceutical Mixing Vessels
Batch mixing vessels in solid-dose pharmaceutical manufacturing require all-stainless gearbox construction with full material traceability. The GMSS50’s 304 SS housing and wheel core, combined with H1 food-grade oil, meet GMP 21 CFR Part 211 equipment material requirements.
Bakery & Food Automation Drives
Dough-mixer drives, depositing-conveyor gearboxes, and portioning machines in commercial bakeries specify the GMSS50 for its smooth-washdown geometry, 80-frame motor support, and quiet worm drive that avoids vibration-induced product defects.
Chemical Reactor Agitators
Small-batch specialty-chemical reactors where the agitator gearbox must withstand solvent vapours, weak acids, and alkaline cleaning specify the GMSS50’s all-304 construction and multi-position mounting flexibility.
Wine & Spirits Processing
Slow-speed agitator drives in winemaking, spirit distillation, and vinegar production specify the GMSS50 for its resistance to acetic acid, ethanol, and SO₂ environments, combined with the box format that facilitates easy visual inspection.
Cosmetics Filling & Blending Lines
Cream and lotion-filling machine drives and blending vessel agitators in cosmetics specify the GMSS50 for its premium stainless box appearance and alcohol-compatible construction.
Selection Guide, FAQ & Customer Reviews
GMSS Series Selection Guide
1. Define output torque (Nm) and output speed (rpm). 2. Calculate ratio = motor speed ÷ output speed. 3. Match motor frame to available IEC options for EP-GMSS50 (63/71/80 IEC (B5 & B14)). 4. Select mounting position (A/B/C/D/E). 5. Specify output type: A-shaft, B-double shaft, D-flange, or E-torque arm.
Certifications
❓ Frequently Asked Questions — EP-GMSS50
⭐ Customer Reviews
“GMSS50 on our commercial yoghurt mixing vessel drives. The D-type output flange couples directly to our vessel head — no coupling, no alignment. All-six-face machined surface passes our food safety audit requirements. The 80B5 motor option gave us exactly the torque we needed.”
Ryan O’Sullivan — Food Process Engineering Pty
Australia 🇦🇺
“Installed on our small-batch pharmaceutical blending vessels. The 304 SS wheel core was mandatory for our FDA validation submission. Material test certificates from Ever-power were provided promptly in the required EN 10204 3.1 format.”
Franziska Wagner — Pharmazeutische Anlagen GmbH
Germany 🇩🇪
“Using on chemical reactor agitators with solvent vapour exposure. The all-stainless box survived 12 months of weekly MEK and acetone wipe-downs without any surface issues. Good torque consistency. Would benefit from a printed English technical manual.”
Arnav Kapoor — Specialty Chemicals India Pvt Ltd
India 🇮🇳
🔗 Accessories & Related Products
304 SS B5/B14 motors in 63/71/80 IEC (B5 & B14) frames — direct bolt-on to EP-GMSS50.
304 SS single solid output shaft. Specify with PAM-IEC code at order.
304 SS double-ended shaft for encoder attachment or dual-load applications.
Direct vessel-head or machine flange coupling. Available GMSS50 and above.
304 SS torque arm for shaft-mount configurations. Rated for 0.12–0.37 kW reaction torques.
🏭 Manufacturing Facility
✉ Get a Quote for EP-GMSS50
The EP-GMSS50 — mid-range hygienic stainless gearbox with D-type flange output for direct vessel integration. Request your quotation from Ever-power today.
✓ OEM enquiries welcome | ✓ Material certificates available | ✓ Full stainless motor-gearbox assemblies
