Beschrijving
EPPC090/NMRV110 Helical-Worm Combined Reducer
The EPPC090/NMRV110 is our highest-torque helical-worm combined configuration, pairing the 90 mm helical pre-stage with the 110 mm NMRV worm main stage to deliver 855 Nm rated output torque at up to 7.5 kW pre-stage input-power capacity. Australian deployments include cement-plant auxiliary drives at NSW and Victorian operations, heavy mining-circuit feeder reducers at WA iron-ore sites, and bulk-terminal conveyor main drives. The 31.5 kg envelope remains substantially lighter than the cast-iron alternatives specified on competing heavy-industry OEM applications.
EPPC090/NMRV110 Specifications
Full technical data for the EPPC090/NMRV110 helical-worm combined reducer. Values are verified at end-of-line dynamometer test and retained on serial-number record for five years. Non-standard shaft modifications, food-grade lubricant fills, and mounting-position variations are available on request through our engineering desk.
| Specificatie | Waarde |
|---|---|
| Modelaanduiding | EPPC090/NMRV110 |
| Configuratie | Spiraalvormige worm gecombineerde reductie-unit (spiraalvormige voorfase + NMRV-worm hoofdfase) |
| Voorfase type | PC090 helical gear pre-stage (approximately 96 percent efficient) |
| Hoofd podiumtype | NMRV110 worm reducer main stage |
| Hartafstand | 90 + 110 mm |
| Nominaal uitgangskoppel | 855 Nm |
| Gecombineerd ratio-bereik | 10:1 tot 700:1 |
| Gecombineerde mechanische efficiëntie | approximately 80 percent |
| Uitgaande assnelheid (4-polige ingang 1400 tpm) | 2.0 – 140 tpm |
| Voorversterker ingangsvermogen (max) | 7,5 kW |
| Uitgaande boring (holle as) | 42 mm |
| Diameter van de uitgaande as (massieve as) | 42 mm |
| Radiale uitgangsbelastingscapaciteit | 7920 N |
| Motorflens – NEMA | 180TC / 210TC |
| Motorflens – IEC | B5 |
| Bouwmateriaal | ADC12 gegoten aluminiumlegering (beide trappen) |
| Materiaal voor spiraalvormige tandwielen | 20CrMnTi gehard gelegeerd staal, geslepen |
| Wormasmateriaal | 20CrMnTi gehard gelegeerd staal, geslepen ISO-klasse 6 |
| Wormwielmateriaal | CuSn12 tinbrons centrifugaal gieten |
| Smeermiddel | Synthetische PAG ISO VG 320 (fabrieksvulling, gedeelde verbrandingskamer) |
| Asafdichtingen | Viton (FKM) dubbellipsafdichtingen |
| Bescherming tegen indringing | IP55 (labyrint-upgrade beschikbaar) |
| Montageposities | B3, B6, B7, B8, V5, V6 |
| Gemonteerd gewicht | 31.5 kg |
Engineering Features of the EPPC090/NMRV110
Six core design characteristics that distinguish the helical-worm combined EPPC090/NMRV110 from alternative two-stage worm reducer constructions. Each feature below is grounded in an operational constraint that Australian OEM specifiers raise during technical qualification.
100% Eind-van-lijn dynamometertest
Every combined unit is tested on a closed-loop dynamometer across the catalogue torque range before shipment. Noise measurement in a semi-anechoic booth, sump-temperature rise monitored during run-in, and combined efficiency verified against catalogue specification. Test record is retained per serial number for five years.
Helical Pre-Stage Efficiency
Case-hardened helical gear set in the pre-stage delivers approximately 96 percent stage efficiency, substantially higher than the 75 to 85 percent typical of a worm pre-stage. Combined with the NMRV main stage, the full drive train achieves 78 to 80 percent mechanical efficiency against 50 to 70 percent for a two-stage worm equivalent.
Higher Input Power Density
The helical pre-stage accepts higher motor input power than a comparable worm pre-stage at the same envelope size, enabling 0.55 to 7.5 kW input across the frame range. This allows a compact combined unit to drive applications that would otherwise require a substantially larger two-stage worm reducer.
Improved Thermal Performance
Higher combined efficiency translates directly to lower in-cabinet heat dissipation. Sump temperature rise at continuous full-load duty is typically 15 to 25 degC lower than an equivalent two-stage worm arrangement, relevant for enclosed packaging and conveyor cabinet installations without active cooling.
Better Impact-Load Tolerance
Helical gears handle intermittent impact loading better than worm gears, where the sliding-engagement geometry is more susceptible to damage from shock loads. The helical pre-stage absorbs start-up and cycle-load impacts, protecting the downstream worm main-stage engagement for extended service life.
Zelfvergrendelende uitgang behouden
De NMRV-wormwieloverbrenging behoudt de zelfvergrendelende uitgangseigenschap die kenmerkend is voor wormwieloverbrengingen met een hoge reductie. Toepassingen die een statische lastvasthouding aan de uitgang vereisen (transportbandhellingen, langzaam draaiende indexeertafels) profiteren van de zelfvergrendelende werking zonder dat een extra mechanische rem nodig is.
Typical EPPC090/NMRV110 Applications Across Australia
The EPPC090/NMRV110 is specified across five primary Australian industry sectors. The descriptions below reflect real installations where the helical pre-stage efficiency advantage over a two-stage worm configuration provides measurable operating-cost benefit or thermal-envelope relief.
Mijnbouw en mineralenverwerking
In mining and minerals-processing service, the EPPC090/NMRV110 drives ore-sample screw feeders, slow-speed cone-crusher auxiliary reducers and tailings-pond skimmer drives at Pilbara, Kalgoorlie and central Queensland operations. The helical pre-stage provides improved impact-load tolerance compared to worm-only pre-stages – relevant on screen-drive and feeder applications where intermittent shock loading is normal. Labyrinth-seal output upgrade and marine-grade paint are both specified as standard on units destined for tropical-coastal bulk-terminal installations.
Materiaalbehandeling en logistiek
For material handling and logistics duty, the EPPC090/NMRV110 is specified into continuous-duty roller-conveyor drives, pallet-transfer indexing units and bulk-terminal belt-tensioning reducers at Australian DC operations. The helical pre-stage delivers approximately 80 percent combined mechanical efficiency, substantially higher than the 50 to 70 percent typical of two-stage worm arrangements. At continuous operation this translates to meaningful electrical-energy savings and reduced heat load inside enclosed conveyor cabinets – particularly relevant on 24/7 three-shift Sydney and Melbourne distribution centres.
Voedsel- en drankenverwerking
In food and beverage processing applications, the EPPC090/NMRV110 powers bottling-line spindle drives, palletiser-cell indexing reducers and CIP-tolerant processing conveyors at Australian dairies, craft breweries and meat processors. The higher combined efficiency of the helical pre-stage compared to a two-stage worm configuration matters here because these lines run continuously for long campaigns. Food-grade H1 synthetic lubricant fill is available as a factory option, with stainless fasteners and washdown-tolerant paint on request.
Milieu- en waterbehandeling
For environmental and water-treatment service, the EPPC090/NMRV110 drives screw-conveyor sludge transport, slow-speed grit-classifier augers and DAF skimmer reducers at municipal and private industrial plants across regional Australia. The IP55 housing and viton lip-seal package handle the corrosive splash environment of chlorination and caustic-dosing zones. The helical pre-stage maintains efficient torque transmission across a wide input-rpm range, enabling VFD-driven variable-speed duty with stable output torque across the operating envelope.
Landbouw en primaire productie
For agricultural and primary-production applications, the EPPC090/NMRV110 is deployed on poultry-house feed-conveyor drives, grain-handling screw-conveyor reducers and irrigation-pump clutch drives on NSW, Victorian and Queensland rural operations. The helical pre-stage efficiency advantage over two-stage worm construction becomes significant where the reducer operates continuously for long periods – electrical consumption on a dairy-shed 24-hour feed line adds up, and the thermal envelope of the aluminium housing handles Queensland summer ambient without active cooling.
How to Specify the EPPC090/NMRV110 Correctly
Een gecombineerde schroef-wormoverbrenging wordt gespecificeerd wanneer het ingangsvermogen, de continue bedrijfstijd of het thermische gedrag van de behuizing het efficiëntievoordeel ten opzichte van een tweetraps schroefoverbrenging operationeel significant maken. Drie aspecten zijn van belang: het vereiste uitgangskoppel, de vereiste overbrengingsverhouding en het werkelijke continue ingangsvermogen van de motor bij het bedrijfspunt. Onze engineeringafdeling controleert deze drie aspecten aan de hand van het bedrijfsprofiel van de klant voordat een dimensioneringsadvies wordt gegeven.
1. Bevestig het uitgangskoppel
Required torque at the output must fall within the 855 Nm rating of the EPPC090/NMRV110. Apply an appropriate service factor (1.0 uniform / 1.25 moderate shock / 1.5 heavy shock) on the nominal load torque.
2. Stel de gecombineerde verhouding in
Het benodigde toerental bij de aangedreven belasting bepaalt de gecombineerde overbrengingsverhouding. Beschikbare gecombineerde overbrengingsverhoudingen variëren van 10:1 tot 700:1 door verschillende combinaties van voor- en hoofdtrapverhoudingen. Geef het gewenste toerental op voor een optimale overbrengingsverhouding.
3. Controleer het motorvermogen.
Pre-stage input-power capacity is 7.5 kW maximum. Helical pre-stage efficiency (approximately 96 percent) allows smaller motor sizing than a two-stage worm equivalent for the same driven-load torque.
EPPC090/NMRV110 Technical Questions
The most common technical questions our engineering desk receives on the EPPC090/NMRV110 from Australian OEM design engineers, plant maintenance leads, and specification consultants. Additional questions are welcome by email to our engineering team.
What combined efficiency does the EPPC090/NMRV110 achieve?
Combined mechanical efficiency of the EPPC090/NMRV110 is approximately 80 percent across the normal operating range, the product of the helical pre-stage (approximately 96 percent) and the NMRV worm main stage (78 to 85 percent depending on the main ratio). This is substantially higher than the 50 to 70 percent typical of two-stage worm arrangements, translating to measurable motor-electrical consumption savings on continuous-duty applications.
When would I choose the EPPC090/NMRV110 over a two-stage worm reducer?
Specify the EPPC090/NMRV110 when: input power is above 0.5 kW and electrical consumption matters, continuous-duty operation is the norm (conveyors, processing lines), impact loading or frequent starts stress the drive train, or thermal headroom in enclosed cabinet installations is constrained. Choose a two-stage worm when very high combined ratios above 700:1 are required, since the helical pre-stage cannot reach the ultra-high ratios of a two-stage worm configuration.
Is the output self-locking on the EPPC090/NMRV110?
The worm main stage retains the self-locking output characteristic typical of high-reduction worm gearing. For most combined ratios above about 50:1 the output is self-locking under static load. The helical pre-stage on its own would not self-lock, but the downstream worm stage provides this characteristic for the combined unit. The static self-locking condition should not substitute a mechanical brake where a brake is a safety requirement.
What motor power is typical for this frame?
The EPPC090/NMRV110 pre-stage input-power capacity is 7.5 kW. Typical Australian OEM applications pair this combined reducer with a 7.5 kW or smaller four-pole three-phase motor, sized to the actual duty torque and output speed rather than the catalogue maximum. Motor-power sizing confirmation is issued by our engineering desk against the customer duty profile during quotation.
Wat is de verwachte levensduur bij continu gebruik?
Under rated output torque with appropriate synthetic oil fill, expect 25,000 to 40,000 service hours before measurable drift in output-shaft backlash signals worm-wheel wear in the main stage. The helical pre-stage typically outlasts the worm main stage by a factor of three to four under the same duty cycle, so the main stage wheel becomes the service-life-limiting component.
Are the pre-stage and main-stage serviceable independently?
The combined EPPC090/NMRV110 is supplied as a factory-matched assembly sharing a common oil chamber across the interconnecting flange. Field servicing replaces the full combined assembly rather than individual stages. This preserves the factory run-in engagement quality between the helical pre-stage output and the worm main-stage input.
What Engineers Say About the EPPC090/NMRV110
Geverifieerde feedback van Australische en internationale ingenieursklanten. Namen en bedrijven worden met toestemming gepubliceerd. De tekst van de beoordelingen is waar nodig geparafraseerd om vertrouwelijke projectdetails te beschermen.
Using the EPPC090/NMRV110 on slow-speed belt-tensioning drives at the terminal. The helical pre-stage handles the intermittent impact loading from belt-starts better than the previous worm-only units, which were experiencing premature worm-wheel wear. Through 14 months of service the replacement units are performing well against the operational profile.
Stocking the EPPC090/NMRV110 for the Indian processing-industry market. Customer feedback on the helical-worm combined efficiency and cabinet-temperature behaviour has been positive in the food-processing and pharmaceutical-manufacturing segments. Build-quality consistency across batch shipments has been reliable.
The EPPC090/NMRV110 runs our bottling-line spindle drives after a production-line retrofit. The motor-electrical consumption reduction compared to the previous two-stage worm reducers has been quantified on the plant SCADA historical data – meaningful annual savings across the multi-line facility.
Deployed the EPPC090/NMRV110 on chemical-dosing agitator drives at our processing site. The combined efficiency and IP55 corrosion resistance package suited the operating environment. Serial-number traceability and test-record retention aligned with our QA-documentation requirements for the regulated-industry sector.
Specified the EPPC090/NMRV110 into our slow-indexing assembly-line rotary-table drives. The combined helical-worm construction delivered the self-locking output characteristic required at the application with a more compact envelope than our previous two-separate-reducer arrangement. Technical documentation supports our mechanical-engineering change-control process.
Verwante spiraalvormige worm gecombineerde configuraties
Three related helical-worm combined reducers across different torque and input-power envelopes. If the EPPC090/NMRV110 is close but not exactly matched to your duty requirement, one of the alternatives below may deliver a better specification fit.
Bekijk het volledige overzicht gecombineerd bereik van spiraalworm of vergelijk met de gecombineerde tweefasenwormalternatieven.
Ready to Specify the EPPC090/NMRV110?
Stuur uw duty-cycle parameters naar onze Australische engineeringafdeling voor een aanbeveling qua afmetingen, compatibele motoropties en een definitieve offerte. Technische vragen worden beantwoord door de engineer die verantwoordelijk is voor het product, niet door een algemene verkoopafdeling.
