SSRV Stainless Steel Worm Gearbox Reducer
Corrosion-resistant 304 stainless steel worm reducers engineered for hygienic, marine, chemical, and washdown environments. Five frame sizes from SSRV-040 through SSRV-090, ratios 7.5:1 to 100:1, direct NMRV dimensional replacement.
Complete Corrosion-Resistant Drive Family
The GBC SSRV Stainless Steel Worm Gearbox Series delivers five precision-cast 304 stainless steel frame sizes for demanding corrosion-resistant applications. Every unit features an electrolytically polished housing, a 12-2 tin bronze worm gear, and fully synthetic worm gear oil, with mounting dimensions identical to the industry-standard NMRV worm reducer range. Browse the complete worm reducer gearbox category for all drive technology options GBC offers across Australia.
Engineered for Corrosion
Solid 304 stainless housing and electrolytically polished surface resist saltwater pitting, chemical attack, and daily high-pressure washdowns without coating failure.
Sized for Every Duty
Output shafts from 18 mm to 35 mm cover light packaging drives up to heavy-duty offshore and petrochemical installations with a single compatible platform.
Direct NMRV Replacement
Identical mounting geometry to standard NMRV cast iron units. Swap out failing gearboxes one-for-one with zero mechanical redesign or baseplate modification.
Browse the SSRV Range
Five frame sizes, one consistent stainless steel construction standard. Click any model below to view complete specifications, dimensional drawings, and application guidance.
Compact Hygienic Drive
Shaft 18 mm | IEC 56B – 71B
The most compact SSRV unit. Ideal for food processing conveyors, packaging machines, and car wash systems where space is tight and hygiene is non-negotiable.
View SSRV-040
Pharmaceutical-Grade Performance
Shaft 25 mm | IEC 63B – 80B
Versatile mid-compact frame with 25 mm shaft. The preferred choice for pharmaceutical GMP production, dairy CIP lines, and sanitary food processing.
View SSRV-050
Marine & Chemical Workhorse
Shaft 25 mm | IEC 71B – 90B
Mid-range workhorse engineered for marine aquaculture, chemical dosing systems, and municipal wastewater treatment where saltwater and vapors destroy standard gearboxes.
View SSRV-063
Heavy-Duty Corrosion-Proof
Shaft 28 mm | IEC 71B – 100/112B
Heavy-duty frame with 28 mm shaft. Built for large-scale wastewater treatment, offshore platforms, and chemical plants where high torque meets aggressive corrosion.
View SSRV-075
Flagship Maximum Torque
Shaft 35 mm | IEC 80B – 100/112B
The flagship SSRV unit. Maximum torque capacity for petrochemical reactor drives, mining washdown conveyors, and heavy marine installations requiring uncompromising performance.
View SSRV-090Why Engineers Specify the SSRV Series
Every SSRV unit shares the same engineering standards and material specifications. These six characteristics define the difference between the SSRV series and conventional cast iron or aluminum worm reducers.
304 Stainless Precision Casting
Housing, wheel core, and output shaft are all manufactured from 304 stainless steel. No painted surfaces to chip, no aluminum to corrode, no hidden carbon steel components that create galvanic corrosion points.
Electrolytically Polished Surface
A mirror-smooth finish prevents bacterial adhesion, simplifies washdown cleaning, and resists pitting from chlorides, acids, and chemical vapors. Meets surface requirements for HACCP, FDA, and GMP compliance.
12-2 Tin Bronze Worm Gear
Bronze worm gear paired with a hardened steel worm shaft delivers quiet operation, low friction, excellent wear resistance, and natural corrosion compatibility with the stainless housing — extending service life across continuous-duty cycles.
Fully Synthetic Worm Gear Oil
Factory-filled synthetic lubricant provides superior thermal stability, reduced internal friction, improved cold-start performance, and extended oil-change intervals compared to mineral oils.
NMRV Dimensional Compatibility
SSRV-040 through SSRV-090 share identical mounting dimensions with the corresponding NMRV series. Drop-in replacement of corroding cast iron or aluminum units without bracket modifications or coupling changes.
Multi-Directional Mounting
Every SSRV size supports foot, flange, and torque-arm mounting — horizontal, vertical, and inverted orientations — providing installation flexibility for retrofit projects and new equipment builds alike.
Full Technical Comparison
All critical specifications and dimensions across the five SSRV frame sizes. Use this reference to match shaft diameter, motor flange compatibility, and torque capacity to your drive requirements.
| Parameter | SSRV-040 | SSRV-050 | SSRV-063 | SSRV-075 | SSRV-090 |
|---|---|---|---|---|---|
| Output Shaft Diameter | 18 mm | 25 mm | 25 mm | 28 mm | 35 mm |
| Output Shaft Length (B) | 40 mm | 50 mm | 50 mm | 60 mm | 80 mm |
| Overall Length (L) | 128 mm | 153 mm | 173 mm | 192 mm | 234 mm |
| Total Length w/ Input (L1) | 164 mm | 199 mm | 219 mm | 247 mm | 309 mm |
| Mounting Bolt | M6 x 17 | M10 x 27 | M10 x 27 | M10 x 27 | M12 x 34 |
| Output Flange KA | 67 mm | 90 mm | 82 mm | 111 mm | 111 mm |
| Output Flange KP | 110 mm | 125 mm | 180 mm | 200 mm | 210 mm |
| Torque Arm K1 | 100 mm | 100 mm | 150 mm | 200 mm | 200 mm |
| IEC Motor Flanges | 56B – 71B | 63B – 80B | 71B – 90B | 71B – 100/112B | 80B – 100/112B |
| Gear Ratio Range | 7.5:1 to 100:1 (7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100) | ||||
| Housing Material | 304 Stainless Steel, Precision Cast, Electrolytically Polished | ||||
| Worm Gear | 12-2 Tin Bronze (CuSn12) | ||||
| Lubrication | Fully Synthetic Worm Gear Oil (Factory-Filled) | ||||
| Operating Temperature | -10 to +80 degrees C (Standard) | ||||
| NMRV Equivalent | NMRV040 | NMRV050 | NMRV063 | NMRV075 | NMRV090 |
Industries Served
From compact bottling lines to massive petrochemical reactors, the SSRV series delivers corrosion-resistant performance across every industry where washdown, saltwater, and chemical exposure destroy conventional worm gearboxes.
Food & Beverage
Bottling conveyors, sugar refineries, meat processing lines meeting HACCP and FDA surface standards for daily washdown.
Pharmaceutical
Tablet coating pans, granulator feeds, bulk powder handling in GMP-validated production areas.
Marine & Offshore
Aquaculture conveyors, offshore platforms, shipboard auxiliary drives exposed to continuous salt spray.
Chemical & Petrochemical
Reactor agitators, dosing systems, scrubber drives withstanding acid vapor and solvent exposure.
Wastewater Treatment
Clarifiers, sludge mixers, dewatering presses operating in hydrogen sulfide and chlorinated effluent environments.
Dairy & Milk
Cream separators, homogenizer feeds, vat agitators surviving daily CIP cycles with caustic soda and nitric acid.
Packaging & Bottling
Cap tighteners, label applicators, infeed conveyors on high-throughput bottling and filling lines.
Car Wash Systems
Passenger tunnel brushes, heavy-duty truck wash conveyors, chain drives resisting detergent and wax chemicals.
Mining & Processing
Copper, gold, and lithium processing conveyor drives, flotation cell agitators, washdown drum rotators.
Technical Reference Drawings
Standardized technical geometry shared across the entire SSRV series. Use these reference drawings alongside the model-specific dimension drawings on each individual product page.
304 Stainless Output Shafts
Output shaft diameters from 18 mm (SSRV-040) up to 35 mm (SSRV-090) with standardized keyway profiles.
Output Flange Dimensions
Standard output flange mounting patterns for direct coupling to pumps, mixers, and driven machinery.
Torque Arm Assembly
304 stainless torque arm option for shaft-mounted installations on conveyor drums and agitator shafts.
Frequently Asked Questions
Common questions engineers and procurement professionals ask when specifying SSRV stainless steel worm gearboxes for corrosive-environment applications.
What is the SSRV stainless steel worm gearbox series?
The SSRV series is a complete family of five frame sizes (SSRV-040, 050, 063, 075, 090) of stainless steel worm gear reducers built from precision-cast 304 stainless steel with an electrolytically polished surface finish. Every unit uses a 12-2 tin bronze worm gear and fully synthetic worm gear oil. The series shares identical mounting geometry with the NMRV worm reducer standard, enabling direct replacement of painted cast iron or aluminum units.
Are SSRV reducers dimensionally interchangeable with NMRV gearboxes?
Yes. Every SSRV model is dimensionally identical to its NMRV counterpart. Mounting patterns, output shaft dimensions, flange patterns, and bolt-hole spacing are all identical, allowing direct one-for-one replacement of corroded cast iron or aluminum units in existing plant equipment without mechanical redesign, baseplate modifications, or coupling changes.
How do I choose between the SSRV-063 and SSRV-075?
The SSRV-063 features a 25 mm output shaft and accepts IEC motor flanges 71B to 90B, suitable for medium-duty applications like chemical dosing and marine conveyors. The SSRV-075 steps up to a 28 mm shaft with flanges up to 100/112B, engineered for heavier loads including large sludge mixers, offshore drives, and industrial-scale reactors. If your peak torque is near the SSRV-063 upper limit, step up to the SSRV-075 for safety margin.
Why stainless steel instead of aluminum or painted cast iron?
Aluminum suffers galvanic corrosion in chloride and alkaline environments. Painted cast iron relies on a coating that chips and fails, exposing iron to rapid oxidation. The 304 stainless steel used in the SSRV series provides inherent corrosion resistance throughout, eliminating coating maintenance and premature replacement. Over a 10-year service horizon, the lifecycle cost of stainless is significantly lower than repeated painting, rust remediation, and early replacement of coated alternatives.
What gear ratios are available across the SSRV range?
All five SSRV models support ratios from 7.5:1 to 100:1 with standard ratios of 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, and 100. Specific ratio availability may vary with the selected IEC motor flange configuration. For applications requiring non-standard ratios or higher reduction, consult GBC engineering about double-reduction configurations.
Does GBC provide CAD files and technical drawings?
Yes. 2D dimensional drawings and 3D CAD files are available free of charge for every SSRV model. Common formats include DWG, STEP, IGES, and PDF. Contact the GBC engineering team with your model selection and preferred file format, and the documentation will be delivered directly via email to support mechanical design, layout planning, and OEM integration.
Are OEM, volume discounts, and distribution programs available?
Yes. GBC offers OEM branding, volume discount pricing for project quantities, and authorized distribution agreements. Machine builders integrating SSRV units as components in branded equipment can access private-labeling and custom specification options. Qualified distributors receive regional territory protection, technical training, and dedicated sales support. Contact the GBC commercial team to discuss partnership opportunities.
Does GBC ship internationally?
Yes. GBC ships SSRV series reducers worldwide, with established logistics partnerships across Australia, Southeast Asia, Europe, North America, South America, the Middle East, and Africa. Standard shipping, expedited delivery, and consolidated container loading for project quantities are all available. Delivery lead times depend on configuration and destination.
Related Stainless Steel Gearbox Categories
Explore alternative stainless drive configurations and compatible motor solutions. All sit alongside the SSRV series within our broader worm reducer gearbox catalogue.
Specify the Right SSRV Model — GBC Engineering is Here to Help
Whether you need a single SSRV-040 for a packaging line or a fleet of SSRV-090 units for a petrochemical expansion, the GBC team supports your specification, CAD documentation, and worldwide logistics. OEM machine builders, system integrators, and authorized distributors are invited to apply for partnership programs.
Free Technical Support | CAD Files Available | Global Shipping | Sizing Engineering Review