{"id":1875,"date":"2026-04-09T02:58:48","date_gmt":"2026-04-09T02:58:48","guid":{"rendered":"https:\/\/wormwheelgear.top\/?p=1875"},"modified":"2026-04-09T03:00:14","modified_gmt":"2026-04-09T03:00:14","slug":"stainless-steel-worm-gear-is-not-the-same-as-food-grade","status":"publish","type":"post","link":"https:\/\/wormwheelgear.top\/et\/stainless-steel-worm-gear-is-not-the-same-as-food-grade\/","title":{"rendered":"“Stainless Steel Worm Gear ”\u00a0Is Not the Same as Food Grade"},"content":{"rendered":"
\n
<\/div>\n
<\/div>\n
\n
Application Engineering Guide \u00b7 A5<\/span><\/div>\n
\u2713 HACCP Zone 1&2<\/span>
\n\u2713 SS316 Electropolished<\/span>
\n\u2713 NSF H1 Compatible<\/span>
\n\u2713 Full Documentation<\/span><\/div>\n

“Stainless Steel Worm Gear”<\/span>\u00a0Is Not the Same as Food Grade<\/h1>\n

An SS304 worm gear passes visual inspection. It fails a HACCP Zone 1 audit. The surface finish, lubricant certification, and documentation trail determine whether your machine clears regulatory approval \u2014 or gets pulled two weeks after installation.<\/p>\n

\u2709 Request Food Grade Spec<\/a>
\n\u2699 Browse Stainless Gears<\/a><\/div>\n
<\/div>\n<\/div>\n<\/section>\n
\n

What the HACCP Audit Actually Found<\/h2>\n

In 2022, a Korean processed meat producer installed a new slicing and portioning line. The conveyor and portion-handling drives used gearboxes specified as “stainless steel worm gear drives” by the machinery builder. Four months after commissioning, during a routine HACCP third-party audit, three of the gear-driven assemblies were flagged. Not for corrosion. Not for contamination. For surface roughness.<\/strong><\/p>\n

The gearbox output shaft seal areas had machined surface roughness of Ra 3.2\u20136.4 \u00b5m. Meat processing regulations in South Korea require food contact and splash zone surfaces to have Ra \u2264 0.8 \u00b5m. The material was stainless steel. The material was not the problem. The finish was. The line was quarantined for four days while the gearboxes were removed, replated with electropolished shaft extensions, and re-certified.<\/p>\n

\n

This guide covers:<\/strong> HACCP zone classification and what each zone requires from gear components; the metallurgical difference between SS304 and SS316 in CIP environments; why NSF H1 lubricants create a bronze wheel compatibility problem; surface finish requirements by application; and how to build a documentation package that passes food safety audit.<\/p>\n<\/div>\n

HACCP Zone Classification \u2014 The Framework That Defines Everything<\/h2>\n

HACCP zone classification divides a food production environment into areas based on product contact risk. Gear components used in or near each zone face different regulatory and engineering requirements.<\/p>\n

\n
\n
<\/div>\n
Z1<\/div>\n
Direct Product Contact Zone<\/div>\n
Gear components physically touch or are immersed in food product. Rare for drive gears but occurs in dough mixer drives, meat grinder drives, and some pressing equipment.<\/div>\n
Requires: SS316L, Ra \u2264 0.4 \u00b5m, NSF H1 lubrication, full FDA\/HACCP documentation<\/div>\n<\/div>\n
\n
<\/div>\n
Z2<\/div>\n
Splash and Drip Zone<\/div>\n
Product may splash, drip, or drain onto gear components during normal operation or during cleaning. The most common zone for drive gears in food processing lines.<\/div>\n
Requires: SS316, Ra \u2264 0.8 \u00b5m, NSF H1 lubricant, IP65+ sealing, documented materials<\/div>\n<\/div>\n
\n
<\/div>\n
Z3<\/div>\n
Hygienic Ambient Zone<\/div>\n
No direct or splash contact but within the food production building. Regular wash-down cleaning occurs. Surfaces must be cleanable but product contact is not expected.<\/div>\n
Requires: SS304 acceptable, Ra \u2264 1.6 \u00b5m, IP54+ sealing, cleanable surfaces<\/div>\n<\/div>\n<\/div>\n
\n

\"SS316<\/p>\n

Korea Ever-Power SS316 worm gear with electropolished flanks (Ra \u2264 0.4 \u00b5m) \u2014 compliant with food processing Zone 1 and Zone 2 requirements.<\/p>\n<\/div>\n

\n

SS316 vs SS304 vs Carbon Steel \u2014 The Metallurgy Decides the Zone<\/h2>\n

Standard CIP cleaning solutions in meat, dairy, and beverage facilities use sodium hydroxide (NaOH) at 1\u20132% concentration at 70\u201380\u00b0C for organic cleaning, followed by nitric acid or peracetic acid for sanitisation. SS304 contains 18% chromium \u2014 its passive oxide layer is susceptible to pitting attack from chloride ions above approximately 15\u00b0C. SS316 adds 2\u20133% molybdenum, raising the critical pitting temperature to approximately 50\u00b0C \u2014 above the temperature range of CIP operations.<\/p>\n

\n
\n
SS316<\/div>\n
Zone 1 & Zone 2<\/div>\n
Mol\u00fcbdeen<\/span>2,0\u20133,0%<\/span><\/div>\n
Pitting temp<\/span>~50\u00b0C onset<\/span><\/div>\n
CIP compat.<\/span>Full \u2014 NaOH + HNO3<\/span><\/div>\n
Peracetic acid<\/span>Compatible<\/span><\/div>\n
Biofilm resist.<\/span>High (after Ra \u2264 0.8)<\/span><\/div>\n
\u2713 Correct for food production use<\/div>\n<\/div>\n
\n
SS304<\/div>\n
Zone 3 Only<\/div>\n
Mol\u00fcbdeen<\/span>Puudub<\/span><\/div>\n
Pitting temp<\/span>~15\u00b0C onset<\/span><\/div>\n
CIP compat.<\/span>Marginal \u2014 chloride risk<\/span><\/div>\n
Peracetic acid<\/span>Marginal at high temp<\/span><\/div>\n
Biofilm resist.<\/span>Lower \u2014 pits harbour bacteria<\/span><\/div>\n
\u26a0 Acceptable for ambient clean zones only<\/div>\n<\/div>\n
\n
Carbon+Zinc<\/div>\n
Not Food Grade<\/div>\n
Protection<\/span>Ohverduslik tsinkkate<\/span><\/div>\n
CIP compat.<\/span>None \u2014 NaOH strips zinc<\/span><\/div>\n
Peracetic acid<\/span>Destroys coating<\/span><\/div>\n
Wash-down<\/span>Poor<\/span><\/div>\n
HACCP tsoon<\/span>Pole \u00fcheski tsoonis vastuv\u00f5etav<\/span><\/div>\n
\u2717 Not for food environments<\/div>\n<\/div>\n<\/div>\n
\n

The NSF H1 Lubricant \/ Bronze Wheel Compatibility Problem<\/h2>\n
\n
\"Bronze<\/div>\n
\n

NSF H1 lubricants are formulated for incidental food contact. They are approved for use where the lubricant may come into contact with food in small quantities \u2014 the standard specification for Zone 1 and Zone 2 gear drives.<\/p>\n

The issue: NSF H1 formulations exclude sulfur-based and chlorine-based EP (Extreme Pressure) additives \u2014 precisely the additives that provide anti-scuffing capacity in standard worm gear oils. Without EP additives, an NSF H1 lubricant has lower anti-scuffing capacity than a conventional worm gear oil, particularly at high sliding velocities above 6 m\/s and elevated temperatures.<\/p>\n

The specification path that resolves this: Worm shaft must be carburized and ground SCM415 at 58\u201362 HRC.<\/strong> The anti-scuffing capacity of the mesh depends primarily on hardness differential. A hardened SCM415 shaft paired with tin bronze wheel and NSF H1 PAO oil maintains adequate anti-scuffing across the food-relevant speed range. Keep sliding velocity below 4 m\/s for NSF H1 applications.<\/p>\n<\/div>\n<\/div>\n

\n

Do not use NSF H2 lubricants<\/strong> where there is any possibility of food contact. NSF H2 certifies lubricants for use on non-food-contact surfaces only. H2 formulations may contain EP additives that are not approved for incidental food contact. Specify H1 throughout any Zone 1 or Zone 2 drive, regardless of housing sealing level.<\/p>\n<\/div>\n

Surface Finish Requirements by Application Position<\/h2>\n

Surface roughness (Ra) determines whether biofilm can establish itself on exposed metal surfaces. Bacterial cells (typically 1\u201310 \u00b5m) lodge in surface recesses deeper than their own diameter, where cleaning agents cannot reach them.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n
Application Position<\/th>\nHACCP Zone<\/th>\nRa Requirement<\/th>\nAchievable by<\/th>\n<\/tr>\n<\/thead>\n
Gear tooth flanks (exposed)<\/td>\nZ1<\/td>\nRa \u2264 0,4 \u00b5m<\/td>\nCNC grinding + electropolishing<\/td>\n<\/tr>\n
Shaft seal areas and journal<\/td>\nZ1\u2013Z2<\/td>\nRa \u2264 0,4 \u00b5m<\/td>\nCNC turning + precision grinding<\/td>\n<\/tr>\n
Bore and keyway surfaces<\/td>\nZ2<\/td>\nRa \u2264 0,8 \u00b5m<\/td>\nCNC boring + honing<\/td>\n<\/tr>\n
Housing exterior (washdown)<\/td>\nZ2\u2013Z3<\/td>\nRa \u2264 1,6 \u00b5m<\/td>\nStandard machining<\/td>\n<\/tr>\n
Non-contact structural faces<\/td>\nZ3<\/td>\nRa \u2264 3.2 \u00b5m<\/td>\nStandard turning<\/td>\n<\/tr>\n
As-cast \/ as-welded<\/td>\nNot suitable<\/td>\nRa 6.3\u201325 \u00b5m<\/td>\nNot acceptable in any food zone<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Food Machinery Applications and Their Specific Gear Requirements<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n
Food Machinery Type<\/th>\nZone<\/th>\nGear Specification<\/th>\nKey Risk if Wrong<\/th>\n<\/tr>\n<\/thead>\n
Slicing and portioning machine<\/td>\nZ1\u2013Z2<\/td>\nSS316, Ra \u2264 0.4 \u00b5m, NSF H1 PAO, SCM415 worm<\/td>\nBacterial harbouring; pitting corrosion from meat juices<\/td>\n<\/tr>\n
Filling and dispensing equipment<\/td>\nZ1<\/td>\nSS316L, Ra \u2264 0.4 \u00b5m electropolished, full documentation<\/td>\nProduct contamination; FDA documentation failure<\/td>\n<\/tr>\n
Packaging line conveyor<\/td>\nZ2\u2013Z3<\/td>\nSS316, Ra \u2264 0.8 \u00b5m, IP65 sealing, NSF H1<\/td>\nCorrosion from wash-down; lubricant leakage onto packaging<\/td>\n<\/tr>\n
Dairy processing line<\/td>\nZ1\u2013Z2<\/td>\nSS316, electropolished, CIP-rated sealing, full traceability<\/td>\nDairy acid corrosion; biofilm in surface recesses<\/td>\n<\/tr>\n
Bakery and dough handling<\/td>\nZ1\u2013Z2<\/td>\nSS316, Ra \u2264 0.8 \u00b5m, food-safe coating on non-SS surfaces<\/td>\nDough embedding in surface defects; yeast contamination<\/td>\n<\/tr>\n
Beverage filling line<\/td>\nZ2\u2013Z3<\/td>\nSS316 or SS304 (Z3 only), IP54+, NSF H1 where splash possible<\/td>\nCarbonated acid attack on carbon steel; lubricant migration<\/td>\n<\/tr>\n
Cold room conveyor (\u221218\u00b0C)<\/td>\nZ2\u2013Z3<\/td>\nSS316, cold-temp NSF H1 PAO (VI > 150), IP65<\/td>\nLow-temp viscosity overload; condensation corrosion<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
\n
\n
\n

V\u00e4litehnika<\/p>\n

Four Food Processing Worm Gear Specifications \u2014 The Audit, the Failure, and the Fix<\/h2>\n<\/div>\n
\n
\n
Gyeonggi-do, Korea \u00b7 Processed Meat Facility<\/div>\n
HACCP Audit Rejection \u2014 Surface Finish on Zone 2 Worm Gear Drives<\/div>\n

A Korean processed meat producer installed slicing line drives specified as ‘stainless steel worm gear.’ The material was SS304. The finish was Ra 3.2 \u00b5m on seal journal areas. The HACCP audit found this unacceptable for Zone 2 product splash areas.<\/p>\n

Parandus:<\/strong> SS316 worm shaft with CNC-ground journal areas Ra \u2264 0.4 \u00b5m. Electropolished ZCuSn10Pb1 wheel flanks Ra \u2264 0.4 \u00b5m. Full material certificate, heat treatment record, CMM report, and surface finish measurement report shipped with each unit.<\/p>\n

\u2713 HACCP Zone 2 certification achieved \u2014 first audit post-replacement<\/div>\n<\/div>\n
\n
Chungcheongnam-do, Korea \u00b7 Dairy Equipment OEM<\/div>\n
Pitting Corrosion on SS304 Worm Shafts After 8 Months of CIP Cycling<\/div>\n

A Korean dairy equipment manufacturer experienced pitting corrosion on worm gear output shafts after approximately 8 months in service. The CIP protocol used NaOH at 1.5% at 75\u00b0C, followed by peracetic acid. Analysis confirmed chloride-induced pitting on the SS304 shaft journals \u2014 the farm water supply contained 180 ppm chloride, above the critical pitting temperature for SS304 at 75\u00b0C.<\/p>\n

Parandus:<\/strong> SS304 \u2192 SS316 shaft (molybdenum suppresses pitting at CIP temperatures). No changes to dimensions or mounting. Material certification confirming Mo% included in delivery documentation to support the manufacturer’s CE technical file.<\/p>\n

\u2713 Zero pitting corrosion events over subsequent 30-month monitoring period<\/div>\n<\/div>\n
\n
Ho Chi Minh City, Vietnam \u00b7 Beverage Packaging<\/div>\n
NSF H2 Lubricant Leakage Contaminating Packaging \u2014 Audit Non-Conformance<\/div>\n

A Vietnamese beverage packager experienced lubricant leakage from worm gear drives onto packaging materials on their filling line. The drives were specified with NSF H2 lubricant (non-food-contact grade). While the quantity was small, the H2 designation was sufficient for the customer’s food safety auditor to issue a non-conformance.<\/p>\n

Parandus:<\/strong> NSF H2 oil replaced with NSF H1 PAO ISO VG 220 throughout the drive system. Korea Ever-Power supplied replacement worm gear sets with upgraded shaft seals (dual-lip NBR with dust excluder). H1 lubricant certification documentation provided for inclusion in food safety management system files.<\/p>\n

\u2713 Non-conformance closed \u2014 packaging customer food safety audit passed<\/div>\n<\/div>\n
\n
Gyeonggi-do, Korea \u00b7 Frozen Food OEM<\/div>\n
Cold Room Conveyor Worm Gear Failure \u2014 Low-Temperature Lubricant Viscosity<\/div>\n

A frozen food manufacturer’s cold storage conveyor system used conventional ISO VG 460 mineral oil in the worm gear corner drives. The cold room operated at \u221218\u00b0C. ISO VG 460 mineral oil at \u221218\u00b0C has kinematic viscosity exceeding 4,000 cSt \u2014 over 8\u00d7 the design viscosity at operating temperature. The resulting viscous drag caused motor overcurrent on start-up.<\/p>\n

Parandus:<\/strong> ISO VG 460 mineral oil \u2192 NSF H1 PAO synthetic ISO VG 220 (VI > 160). PAO at \u221218\u00b0C viscosity is approximately 650 cSt \u2014 a 2.5\u00d7 increase, well within motor and seal design margins. Worm gear sets unchanged. Lubricant certification added to food safety management documentation.<\/p>\n

\u2713 Motor overcurrent events eliminated \u2014 conveyor runs reliably at \u221218\u00b0C<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n
\n
\n
\n

Korea Ever-Power tooted<\/span><\/p>\n

Food Grade Worm Gear Products<\/h2>\n<\/div>\n
\n
\n
\"SS316<\/div>\n
\n
Zone 1 & Zone 2 \u00b7 Full Documentation<\/div>\n
SS316 Stainless Steel Worm Gear \u2014 Food Grade<\/div>\n
The primary specification for food processing Zone 1 and Zone 2 drive applications. SS316 worm shaft (2.0\u20133.0% molybdenum) resists chloride pitting in CIP environments where NaOH cleaning runs at 70\u201380\u00b0C \u2014 the failure condition that makes SS304 unsuitable for food production. Journal and sealing areas CNC-ground and electropolished to Ra \u2264 0.4 \u00b5m as standard. The matched worm wheel is available in SS316 (for Z1 direct contact) or ZCuSn10Pb1 tin bronze with electropolished flanks (for Z2 splash zone). Full documentation package: mill heat number certificate, heat treatment record, CMM dimensional report, surface roughness measurement report. PPAP Level 1\u20133 available for food machinery OEM supply programs.<\/div>\n
\n
Materjal<\/span>SS316 (2.0\u20133.0% Mo)<\/span><\/div>\n
Pinna viimistlus<\/span>Ra \u2264 0,4 \u00b5m elektropoleeritud<\/span><\/div>\n
Lubricant compat.<\/span>NSF H1 PAO, non-EP oils<\/span><\/div>\n
CIP resistance<\/span>NaOH 2%, HNO3 1%, PAA 0.5%<\/span><\/div>\n
HACCP tsoon<\/span>Zone 1 and Zone 2<\/span><\/div>\n<\/div>\n

Vaata toote spetsifikatsioone \u2192<\/a><\/p>\n<\/div>\n<\/div>\n

\n
\"Precision<\/div>\n
\n
Zone 2 \u00b7 Bronze or Full Stainless<\/div>\n
Precision Worm Wheel \u2014 Food Processing Grade<\/div>\n
Available in two configurations for food processing applications. The SS316 full-stainless variant is correct for Zone 1 direct product contact \u2014 hobbed from solid SS316 bar stock, with all tooth surfaces electropolished to Ra \u2264 0.4 \u00b5m. The ZCuSn10Pb1 tin bronze variant with electropolished flanks is correct for Zone 2 splash zone applications where the bronze anti-scuffing properties are needed at higher sliding velocities. Both variants are bore-machined to H7 tolerance on CMM and supplied with dimensional inspection report. Wheel tooth contact pattern tested on assembly rig before shipment \u2014 coverage \u2265 70% required, percentage documented.<\/div>\n
\n
Z1 material<\/span>SS316, fully electropolished<\/span><\/div>\n
Z2 material<\/span>ZCuSn10Pb1 + electropolished flanks<\/span><\/div>\n
Puuraugu tolerants<\/span>H7 CMM verified<\/span><\/div>\n
Kontaktmuster<\/span>\u2265 70% documented<\/span><\/div>\n<\/div>\n

Vaata toote spetsifikatsioone \u2192<\/a><\/p>\n<\/div>\n<\/div>\n

\n
\"Food<\/div>\n
\n
Documentation \u00b7 Audit Support<\/div>\n
Food Safety Documentation Package<\/div>\n
For food machinery OEMs and production facilities that must maintain food safety management system documentation, Korea Ever-Power provides a structured documentation package that supports HACCP audit, CE\/KS certification, and customer food safety system compliance. The standard package includes: material certificate to mill heat number, heat treatment record, CMM dimensional inspection report, surface roughness measurement report, and contact pattern photograph. Extended PPAP Level 1, 2, or 3 packages available. All documentation retained for 5 years from shipment date and available on request at no additional charge.<\/div>\n
\n
Standard docs<\/span>Mat. cert + CMM + surface Ra<\/span><\/div>\n
PPAP<\/span>Saadaval on 1., 2. v\u00f5i 3. tase<\/span><\/div>\n
Biosobivus<\/span>ISO 10993-1 ref. available<\/span><\/div>\n
Retention<\/span>5 years from shipment<\/span><\/div>\n<\/div>\n

Vaata toote spetsifikatsioone \u2192<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

\n
\n

Food Processing FAQ<\/span><\/p>\n

Questions from Food Machinery Engineers and Quality Managers<\/h2>\n<\/div>\n
\nWhat is the difference between NSF H1 and NSF H2 lubricants, and which do I need for a worm gear drive in a food facility?+<\/span><\/summary>\n
\n

NSF H1 lubricants are formulated for applications where incidental contact with food product is possible. They use food-approved base oils and additive packages. NSF H2 lubricants are for non-food-contact surfaces only \u2014 they may contain additives that are not approved for food contact. For any worm gear drive in HACCP Zone 1 or Zone 2 \u2014 which includes most conveyor drives, portioning drives, filling drives, and agitator drives in food production areas \u2014 specify NSF H1. If there is any doubt about whether a drive position is Zone 2 or Zone 3, default to H1. The cost difference between H1 and H2 lubricants is small; the cost of a food safety non-conformance is not.<\/p>\n<\/div>\n<\/details>\n

\nCan a tin bronze worm wheel be used in a food processing application, or must the wheel also be stainless steel?+<\/span><\/summary>\n
\n

Tin bronze worm wheels are acceptable in HACCP Zone 2 (splash zone) food processing applications when the wheel flanks are electropolished to Ra \u2264 0.8 \u00b5m and the drive is adequately sealed against product ingress. In Zone 2, the risk is surface bacterial adhesion, not product contact \u2014 and a properly electropolished bronze surface provides adequate resistance. The case for bronze over stainless steel in Zone 2 is the tribological advantage: bronze provides better anti-scuffing performance at the sliding contact velocities typical of food machinery drives (1\u20136 m\/s), particularly when using NSF H1 lubricants that lack EP additives. For Zone 1 direct product contact, the wheel must be SS316 or another FDA-acceptable material.<\/p>\n<\/div>\n<\/details>\n

\nHow do I specify a worm gear set for a cold room conveyor operating at \u221220\u00b0C?+<\/span><\/summary>\n
\n

Three elements require attention for sub-zero operation. First, lubricant: ISO VG 460 mineral oil at \u221220\u00b0C reaches viscosities of 4,000\u20138,000 cSt, causing severe viscous drag and motor overcurrent. Specify NSF H1 synthetic PAO ISO VG 100 or 150, which maintains approximately 300\u2013500 cSt at \u221220\u00b0C. Second, seal material: standard NBR seals become brittle below \u221220\u00b0C; specify FKM (Viton) or silicone seals. Third, housing material: standard ductile iron housings are acceptable to \u221230\u00b0C; below \u221230\u00b0C, specify ferritic stainless steel or aluminium housing to avoid brittle fracture risk.<\/p>\n<\/div>\n<\/details>\n

\nDoes Korea Ever-Power supply PPAP documentation for food machinery OEM supply programs?+<\/span><\/summary>\n
\n

Yes. PPAP Level 1 (Part Submission Warrant), Level 2 (PSW + limited supporting documentation), and Level 3 (PSW + full supporting documentation) are available for established supply programs. Confirm the required PPAP level at order placement \u2014 Level 3 requires additional production documentation lead time and should be agreed in the initial order confirmation. PPAP is not available on first-order prototype or sample quantities; it is available for production supply programs after sample approval.<\/p>\n<\/div>\n<\/details>\n

\nWhat cleaning agents can I use on an SS316 worm gear shaft in a CIP cleaning cycle?+<\/span><\/summary>\n
\n

SS316 is compatible with: sodium hydroxide (NaOH) at up to 4% concentration, 80\u00b0C; phosphoric acid (H3PO4) at up to 2%, 60\u00b0C; nitric acid (HNO3) at up to 2%, 60\u00b0C; peracetic acid (PAA) at up to 0.3%, 40\u00b0C; and chlorinated alkaline CIP agents at up to 200 ppm active chlorine, 50\u00b0C. Avoid CIP solutions containing hydrochloric acid (HCl) \u2014 this will cause rapid pitting corrosion on all grades of stainless steel.<\/p>\n<\/div>\n<\/details>\n

\nDo I need to disclose the worm gear material and lubricant to my food safety auditor?+<\/span><\/summary>\n
\n

For equipment in Zone 1 and Zone 2, yes. Your HACCP documentation should include a list of all materials in contact with or adjacent to food product, including drive train materials and lubricants. The documentation package from Korea Ever-Power (material certificate, lubricant compatibility confirmation, surface finish report) provides the information needed for this disclosure. If your facility undergoes IFS, BRC, or SQF certification in addition to HACCP, additional disclosure requirements may apply.<\/p>\n<\/div>\n<\/details>\n

\nCan I use the same worm gear set in both a food processing facility and a pharmaceutical manufacturing facility?+<\/span><\/summary>\n
\n

The material specification (SS316, Ra \u2264 0.4 \u00b5m electropolished) is the same. The documentation requirements differ. Food processing facilities typically require NSF\/FDA compliance documentation. Pharmaceutical manufacturing facilities under GMP regulations require additional documentation: ISO 10993-1 biocompatibility grouping, material traceability to starting stock, and PPAP or equivalent qualification documentation. Korea Ever-Power can provide the standard food-grade documentation package for food applications and the extended pharmaceutical package for GMP applications \u2014 confirm which documentation standard applies at order placement.<\/p>\n<\/div>\n<\/details>\n

\nHow do I handle lubricant change intervals for a worm gear drive in a food processing environment?+<\/span><\/summary>\n
\n

NSF H1 PAO synthetic gear oils have extended drain intervals compared to mineral oils \u2014 typically 3,000\u20134,000 operating hours for enclosed drives at normal operating temperatures. For food processing applications where the housing temperature remains below 60\u00b0C, an annual oil change (or every 2,000 hours, whichever comes first) is appropriate. The first oil change after any gear replacement or new installation should be at 50\u2013100 operating hours to remove running-in bronze wear particles. Use only NSF H1 certified lubricants for top-up \u2014 mixing H1 and H2 lubricants in a Zone 1 or Zone 2 drive invalidates the H1 compliance of the entire fill.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

\n
\n

Specify Your Food Grade Worm Gear Drive<\/h2>\n

Provide HACCP zone, machine type, drive position, sliding velocity, lubricant requirement, and documentation standard (HACCP, BRC, IFS, PPAP). Korea Ever-Power returns a complete food-grade specification with surface finish confirmation and documentation availability within one working day.<\/p>\n

\n

\u2699 Browse Stainless Steel Worm Gears<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n

Toimetaja: Cxm<\/p>","protected":false},"excerpt":{"rendered":"

Application Engineering Guide \u00b7 A5 \u2713 HACCP Zone 1&2 \u2713 SS316 Electropolished \u2713 NSF H1 Compatible \u2713 Full Documentation “Stainless Steel Worm Gear”\u00a0Is Not the Same as Food Grade An SS304 worm gear passes visual inspection. It fails a HACCP Zone 1 audit. The surface finish, lubricant certification, and documentation trail determine whether your machine […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[4774],"tags":[1394,1399],"class_list":["post-1875","post","type-post","status-publish","format-standard","hentry","category-worm-gear","tag-worm-gear","tag-worm-gear-worm"],"_links":{"self":[{"href":"https:\/\/wormwheelgear.top\/et\/wp-json\/wp\/v2\/posts\/1875","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wormwheelgear.top\/et\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wormwheelgear.top\/et\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wormwheelgear.top\/et\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wormwheelgear.top\/et\/wp-json\/wp\/v2\/comments?post=1875"}],"version-history":[{"count":4,"href":"https:\/\/wormwheelgear.top\/et\/wp-json\/wp\/v2\/posts\/1875\/revisions"}],"predecessor-version":[{"id":1879,"href":"https:\/\/wormwheelgear.top\/et\/wp-json\/wp\/v2\/posts\/1875\/revisions\/1879"}],"wp:attachment":[{"href":"https:\/\/wormwheelgear.top\/et\/wp-json\/wp\/v2\/media?parent=1875"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wormwheelgear.top\/et\/wp-json\/wp\/v2\/categories?post=1875"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wormwheelgear.top\/et\/wp-json\/wp\/v2\/tags?post=1875"}],"curies":[{"name":"t\u00f6\u00f6leht","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}