설명
EP-SSVF50 Stainless Steel Worm Gear Reducer
When beverage engineers and chemical plant designers need more torque than a compact SSVF40 can offer — but do not yet need the heavy-duty output of a 63-frame unit — the EP-SSVF50 fills that gap precisely. Built from precision-cast 304 stainless steel with a 12-2 tin-bronze worm wheel and electrolytically polished exterior, the EP-SSVF50 accepts IEC motor flanges from frame 63 up to frame 80, covering input powers typical of 0.37-0.75 kW hygienic drives. Its 134 mm body length and o95 mm input flange make it the natural upgrade path from the SSVF40 for higher-torque conveyor rollers, rotary filling heads, and continuous agitation duties. With eleven gear ratios from 7.5 to 100 and a choice of hollow bore, solid shaft, double shaft, flange, or torque-arm output configurations, the EP-SSVF50 adapts to virtually every hygienic drive scenario an engineer might encounter in a modern FMCG or processing facility.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | EP-SSVF50 |
| Housing Material | 304 Stainless Steel (precision cast) |
| Worm Wheel Material | 12-2 Tin Bronze |
| Worm Shaft Material | 304 Stainless Steel (hardened) |
| Surface Finish | Electrolytically polished |
| Lubrication | Fully synthetic worm gear oil (food-grade H1 option) |
| Speed Ratios | 7.5 / 10 / 15 / 20 / 25 / 30 / 40 / 50 / 60 / 80 / 100 |
| Overall Length | 134 mm |
| Height | 92 mm |
| Input Flange (o) | o95 mm |
| Output Bore (o) | o70 / o108 mm |
| Mounting Thread | M8x10 |
Compatible IEC Motor Flanges and Output Shaft Key Size (mm)
| PAM-IEC | N(H8) | M | P | Ratio Range | Key |
|---|---|---|---|---|---|
| 80B5 | 130 | 165 | 200 | 7.5 – 30 | 19 mm |
| 80B14 | 80 | 100 | 120 | 7.5 – 30 | 19 mm |
| 71B5 | 110 | 130 | 160 | 7.5 – 80 | 14 mm |
| 71B14 | 70 | 85 | 105 | 7.5 – 80 | 14 mm |
| 63B5 | 95 | 115 | 140 | 60 – 100 | 11 mm |
| 63B14 | 60 | 75 | 90 | 60 – 100 | 11 mm |
Output Flange Dimensions SSVF050F (304 SS)
| a1 | KA | KB | KC | KD | KM | KN | KQ | KP | KO |
|---|---|---|---|---|---|---|---|---|---|
| 45 deg | 90 | 9 | 5 | 46.5 | 85 | 70 | 110 | 125 | 11 |
Output Shaft Dimensions (050)
| d | B | B1 | G1 | L | L1 | f | b1 | t1 |
|---|---|---|---|---|---|---|---|---|
| 25 | 50 | 53.5 | 92 | 153 | 199 | M10x27 | 8 | 28 |
Engineering Advantages — EP-SSVF50
📈 Higher Torque Output vs SSVF40
The o25 mm output shaft and o95 mm IEC flange of the EP-SSVF50 enable connection of IEC 80-frame motors delivering significantly more torque than the SSVF40 o75 mm flange. For conveyor rollers, rotary filling heads, and continuous stirrers requiring 0.37-0.75 kW drives, the SSVF50 provides the necessary power headroom.
🌶 Corrosion-Proof Stainless Body
Operating in environments with daily chemical wash-down, chlorinated process water, or aggressive sterilisation agents, the 304 SS housing of the EP-SSVF50 shows no pitting, discolouration, or surface degradation. Where mild-steel gearboxes need painting and eventual replacement, the SSVF50 provides 15+ year service life with zero recoating costs.
🔧 Widest IEC Flange Range in Class
The EP-SSVF50 uniquely spans IEC frames 63 through 80 — six distinct PAM-IEC combinations — giving system integrators maximum flexibility. The same gearbox body can be re-flanged to accept a different motor frame during a machine redesign, protecting capital investment.
🔒 Inherent Self-Locking at i≥40
Like all SSVF series reducers, the EP-SSVF50 worm geometry provides reliable self-locking at ratios 40:1 and above, preventing back-drive when power is cut. This is particularly valuable on filling machine pistons and valve actuators where uncontrolled back-movement would cause product waste or safety incidents.
🔄 Full Ratio Range on IEC 71 Frame
Unlike some mid-range stainless gearboxes that restrict high ratios to large motor frames, the EP-SSVF50 delivers the wide ratio range with IEC 71 B5/B14 motors — an important advantage when machines use standard-stocked 71-frame motors and a wide ratio range is needed without switching gearbox series.
🔋 Fully Synthetic Oil Fill
The EP-SSVF50 is factory-filled with fully synthetic worm gear oil optimised for wide temperature ranges. Longer oil-change intervals compared to mineral oil, reduced sump temperatures, and H1 food-grade oil availability make this the right long-term choice for continuous-duty hygienic processes.
Applications — Where the EP-SSVF50 Excels
🍻 Beverage Bottling and Filling Machines
The SSVF50 higher torque capacity makes it the preferred drive for bottle-transport conveyors, capping head drives, and rotary filler carousels. Running at 80-frame motor power with i=15 delivers the RPM and torque needed for high-speed carbonated drink lines while the stainless exterior passes rigorous hygiene audits of multinational beverage companies.
🥗 Industrial Mixing and Agitation
Continuous agitators for sauces, dairy products, and pharmaceutical suspensions demand sustained torque at low RPM — exactly the EP-SSVF50 strength. At i=100 with an IEC 71 motor, output speeds around 14-15 RPM with maximum holding torque make this the go-to configuration for slow-speed stirrers that must not back-drive when power is removed.
📦 Mid-Duty Conveyor Drum Drives
Installed on drum-motor replacements, inclined conveyor head pulleys, and accumulation conveyor end-drives. The torque arm accessory allows direct shaft-mount to a conveyor drum shaft, eliminating the conveyor frame bracket entirely. Especially effective on inclined meat and seafood conveyors where wash-down and load-holding are simultaneous requirements.
⚗ Chemical and Pharmaceutical Processing
In chemical dosing stations, reactor agitator drives, and pharmaceutical coating pan systems, the SSVF50 corrosion-resistant 304 SS body resists acid, alkali, and solvent exposure that would corrode painted or aluminium gearboxes within months. FDA-compatible materials and full material certification support regulatory compliance documentation.
Selection Guide and Certifications
Configuring the EP-SSVF50 for Your Application
Motor Frame: The EP-SSVF50 accommodates IEC 63, 71, and 80 frames. Select 80B5/80B14 for maximum power; select 71B5/71B14 for the widest ratio range with standard motors.
Ratio Selection: Required output speed n_out = Motor RPM divided by ratio. For 1450 RPM input: i=7.5 gives about 193 RPM (fast conveyor), i=30 gives about 48 RPM (standard conveyor), i=100 gives about 14.5 RPM (agitator/indexer). Calculate output torque = Motor Nm x ratio x efficiency. Worm gearbox efficiency is typically 60-85% depending on ratio.
Output Configuration: Hollow bore (standard), single solid shaft (SS, d=25 mm, L=153 mm, M10x27), double solid shaft (DS, L1=199 mm), output flange (F, KA=90 mm), or torque arm (K1=100, G=14, KG=38.5, KH=10 mm).
Certifications and Compliance
✅ ISO 9001:2015
✅ FDA 21 CFR Materials
✅ RoHS Compliant
✅ H1 Food-Grade Oil Option
✅ Material Traceability Cert
Frequently Asked Questions — EP-SSVF50
How does the EP-SSVF50 differ from the EP-SSVF40 and EP-SSVF63?
The EP-SSVF50 sits between the compact SSVF40 (115.5 mm body, IEC 63-71 frames) and the heavy-duty SSVF63 (166 mm body, IEC 71-90 frames). The SSVF50 134 mm body and o95 mm input flange accept up to IEC 80-frame motors, filling the mid-power gap for applications requiring more torque than the SSVF40 but not the full output of the SSVF63.
Can I use the EP-SSVF50 on a variable frequency drive (VFD)?
Yes. The EP-SSVF50 is VFD-compatible. However, ensure the minimum operating speed provides adequate lubrication oil splash to the worm mesh — typically above 300-400 RPM input. At very low speeds, forced lubrication or grease lubrication may be required. The synthetic oil fill helps maintain viscosity at both low and high operating temperatures typical in VFD applications.
What is the output shaft diameter of the EP-SSVF50?
The EP-SSVF50 solid output shaft is d=25 mm with an 8 mm keyway (b1), key depth t1=28 mm, and M10x27 retaining thread. The single shaft length is L=153 mm; the double shaft extends to L1=199 mm. The hollow bore output flange option uses KA=90 mm with a bolt circle KQ=110 mm (KP=125 mm, 11 mm holes).
Is the EP-SSVF50 suitable for outdoor or wash-down environments?
Yes. The 304 stainless steel housing and electrolytically polished surface provide excellent outdoor and wash-down capability. Sealing is via nitrile rubber (NBR) or optional food-grade PTFE lip seals. For IP69K wash-down duty or aggressive chemical environments, specify stainless fasteners and confirm seal material compatibility with your cleaning agents with our engineering team.
Which mounting orientations are supported by the EP-SSVF50?
The EP-SSVF50 supports horizontal input shaft (standard), vertical input shaft (motor above or below), and wall-mount orientations. Changing mounting position may require an oil level adjustment or a change to the oil fill quantity. Consult the installation guide or contact Ever-power engineering for non-standard mounting orientations to ensure correct lubrication.
Does the EP-SSVF50 worm gear require run-in?
New worm gear sets benefit from a running-in period of approximately 200-400 hours at 50-75% of rated load, during which the contacting surfaces micro-polish to optimum contact geometry. During this period, gearbox operating temperature may be slightly elevated and efficiency somewhat lower. After run-in, efficiency improves and thermal output stabilises at design levels.
Are spare seals and wear parts available for the EP-SSVF50?
Yes. Ever-power stocks shaft seals (input and output), bearing sets, and bronze worm wheel replacements for the EP-SSVF50. Providing the model number and serial number when ordering ensures correct part compatibility. Preventive seal replacement at 8,000-10,000 operating hours is recommended for continuous-duty installations.
Customer Reviews
Mark T. — Engineering Manager, Dairy Co-op 🇦🇺 Australia
★★★★★ 5.0 / 5
“We replaced 8 aluminium gearboxes with EP-SSVF50 units on our cheese-cutting conveyor line after repeated corrosion failures. Eighteen months on, zero corrosion, zero seal failures, and our audit team passed the new installation first time. The IEC 80B5 flange accepted our existing motors without any modification — significant savings on the upgrade project.”
Sophie L. — Process Equipment Buyer, Pharmaceutical MNC 🇫🇷 France
★★★★★ 4.8 / 5
“Specified EP-SSVF50 at i=60 on our tablet coating pan drives. The self-locking holds pan position perfectly during batch change-overs. Full material certification documentation was provided promptly — essential for our FDA facility validation. Quiet operation means operators can communicate normally on the production floor without ear protection.”
Ahmad K. — Plant Director, Soft Drink Bottler 🇸🇦 Saudi Arabia
★★★★☆ 4.6 / 5
“Installed 20 EP-SSVF50 units on our PET bottle conveyor system. Performance in the 45 degree C ambient temperature of our facility has been solid — the synthetic oil fill clearly makes a difference in hot conditions. Ratio i=20 gives us exactly the belt speed we need for our 1450 RPM motors. Will definitely specify again for our expansion line.”
Compatible Motors and Accessories
Matching IEC Electric Motors
- ⚡ IEC 80 frame — B5 or B14 flange, single/three-phase AC motor (ratios 7.5-30, key 19 mm)
- ⚡ IEC 71 frame — B5 or B14 flange (wide ratio range 7.5-80, key 14 mm)
- ⚡ IEC 63 frame — B5 or B14 flange (high ratios 60-100, key 11 mm)
Accessories for EP-SSVF50
📄 Output Flange SSVF050F
KA=90, KB=9, KC=5, KD=46.5, KM=85, KN=70, KQ=110, KP=125 mm. a1=45 degrees, 11 mm holes. For direct flange-coupling to driven equipment hubs.
⚙ Solid Output Shafts (DS/SS)
d=25 mm 304 SS, 8 mm keyway, M10x27 bolt thread. SS: L=153 mm. DS: L1=199 mm. Replaces or supplements the standard hollow bore.
🔧 Torque Arm SSVF050
K1=100, G=14, KG=38.5, KH=10, R=18, B=4 mm. Shaft-mount configuration for conveyor-drum drives. Eliminates dedicated mounting frame.
Upgrade to Hygienic Stainless Drives — Partner with Ever-power
The EP-SSVF50 is in stock and ready for your next project. Whether you are retrofitting existing lines or specifying a greenfield facility, our application engineers support you from ratio selection through final installation.
