Where the EPSS 050 Is Installed
Primary installations include screw conveyor head drives in grain and flour handling, rotary drum mixer reducers in dairy powder blending, bottle capping machine drives, sausage filling machine auger reducers, and pharmaceutical tablet press feed systems. The EPSS 050 is the most frequently ordered stainless steel model for Australian food manufacturers, with active installations across Murray Goulburn dairy facilities, Inghams poultry processing, and Sanitarium cereal production lines.
When to Choose This Model
The EPSS 050 handles the widest motor range in the series (63B14 through 80B14). For applications requiring 90B14 motor flanges or the maximum torque capacity available in the stainless steel range, the EPSS 063 is the appropriate step up.
For detailed information on 304SS construction, VITON sealing, food-grade lubricants, and IP69K washdown compatibility, refer to the Stainless Steel Series overview.
EPSS 050 Specifications
Housing dimensions, IEC motor flange compatibility, and NEMA flange options.
EPSS 050 Housing Dimensions (mm)
| Model | B | C | E | F | G | H | I | M | N | Q | alpha | R | S | U |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EPSS 050 | 60 | 61 | 92 | 87 | 84 | 60 | 50 | 85 | 70 | 4-M8x10 / 8-M8x14 | 45 deg | 70 | 80 | 4-M8x12 |
All dimensions in mm. 304 stainless steel housing with electro-polished finish. Mounting bolt pattern per Q and U columns.
IEC Motor Flange Compatibility
| Motor Flange | A (mm) | D1 (mm) | N1 (mm) | M1 (mm) | P1 (mm) | K1 | Beta |
|---|---|---|---|---|---|---|---|
| 63B14 | 80 | 11 | 60 | 75 | 90 | 4-5.8 mm | 0 deg |
| 71B14 | 80 | 14 | 70 | 85 | 105 | 4-7 mm | 45 deg |
| 80B14 | 80 | 19 | 80 | 100 | 120 | 4-7 mm | 45 deg |
Confirm motor shaft diameter and keyway match the gearbox input bore before ordering. O-ring on input flange protects internal components from moisture ingress during washdown.
NEMA Motor Flange Compatibility
| Motor Frame | A (in) | D1 (in) | N1 (in) | M1 (in) | P1 (in) | K1 | Beta |
|---|---|---|---|---|---|---|---|
| 56C | 3.54 | 0.625 | 4.50 | 5.875 | 6.5 | 4-0.41 in | 45 deg |
NEMA flange dimensions in inches. NEMA motor compatibility enables direct replacement of US-origin equipment in Australian facilities without adapter plates.
Materials & Design Features
304 Stainless Steel Housing
The entire housing, flange faces, and mounting feet are manufactured from AISI 304 stainless steel. Unlike painted aluminium housings that suffer paint flaking in chlorinated washdown environments — creating a contamination risk — the 304SS construction is inherently corrosion-resistant and eliminates paint as a contamination vector entirely. Surface finish is electro-polished for cleanability.
IP69K Washdown Protection
Sealed to IP69K — the highest ingress protection rating available. The gearbox withstands high-pressure (80-100 bar), high-temperature (80 degrees C) close-range washdown jets used in meat, dairy, and pharmaceutical facilities. This exceeds the IP66 rating common on standard industrial gearboxes and eliminates the need for protective covers during cleaning cycles.
VITON (FKM) Oil Seals
All shaft seals use VITON fluoroelastomer (FKM) as standard — not NBR. VITON resists the caustic cleaning chemicals (sodium hydroxide, peracetic acid, chlorine) used in food industry CIP and COP procedures that destroy NBR seals within weeks. Temperature range: -20 degrees C to +200 degrees C continuous.
20CrMnTi Worm Shaft with Zi Profile
The worm shaft is machined from 20CrMnTi alloy steel with a Zi-profile tooth form (involute globoid). Carburised case depth 0.8-1.2 mm, surface hardness HRC 58-62. The Zi profile provides optimised contact geometry for higher load capacity and lower noise compared to standard ZA or ZN profiles.
CuSn12Ni2 Bronze Worm Wheel
The worm wheel uses CuSn12Ni2 nickel-tin-bronze — a higher-performance alloy than the standard CuSn10Pb1 used in general-purpose gearboxes. The 2% nickel content increases tensile strength and corrosion resistance, making it specifically suited for food-grade environments where trace lubricant contact with product is a regulatory concern.
Food-Grade Lubricant & O-Ring Seal
Factory-filled with NSF H1 registered food-grade synthetic lubricant, safe for incidental food contact per FDA 21 CFR 178.3570. An additional O-ring on the input flange face provides a secondary moisture barrier, preventing cleaning solution ingress through the motor-to-gearbox interface during high-pressure washdown.
Other Models in This Series
The EPSS stainless steel range covers centre distances from 30 mm to 63 mm.