Mobil SHC 634 | ISO VG 460 Synthetic Gear & Bearing Oil

Mining Industry Gear & Transmission Oils Mobil SHC 600 Series Mobil™ SHC 600 Series — Synthetic Gear & Bearing Oil Mobil SHC 634 Exceptional Performance Synthetic Gear & Bearing Oil | ISO VG 460 | DIN 51517-3 ISO VG 460 PAO SYNTHETIC Flender Approved SEW-Eurodrive Approved FZG Stage 13+ TOST 10,000+ Hours Product Overview Mobil SHC 634 is an exceptional performance synthetic gear and bearing oil formulated from proprietary PAO base stocks for demanding enclosed gear and bearing applications requiring ISO VG 460 lubrication. ISO VG 460 is a widely specified heavy gear oil grade for slow-speed, high-load gearboxes — and Mobil SHC 634 delivers the full performance of the SHC 600 Series at this grade: Flender and SEW approval, FZG scuffing Stage 13+, FE8 roller wear of 2 mg, RPVOT 2,500 minutes, TOST oxidation life exceeding 10,000 hours, and a pour point of -45°C. The PAO synthetic base stock provides a viscosity index of 174 — substantially higher than mineral gear oils at ISO 460 — delivering more stable viscosity across the operating temperature range, superior film protection at elevated temperatures and reliable cold-start lubrication in remote or outdoor equipment. Extended drain intervals achievable with Mobil SHC 634 directly reduce the frequency and cost of oil changes in slow-speed, high-load enclosed gearboxes where mineral oil life is limiting. Note: Mobil SHC 634 has an orange colour, distinguishing it from mineral gear oils and the clear Mobilgear 600 XP Series. Always confirm your OEM's viscosity grade specification before ordering — ISO VG 460 is specifically required for slow-speed high-load applications where the heavier grade provides adequate film thickness at low shaft speeds. Mobil SHC 600 Series — Grade Selection All SHC 600 Series grades are fully synthetic PAO — select by viscosity grade specified in your gearbox OEM manual Grade ISO VG VI Pour Point SHC 630 220 169 -48°C SHC 632 320 172 -48°C SHC 634 — This product 460 174 -45°C SHC 636 680 181 -45°C SHC 639 1000 184 -42°C Always confirm from your gearbox OEM service manual. Contact Orbit Industrial for grade selection assistance. Key Performance Benefits Extended Drain Intervals RPVOT 2,500 minutes and TOST 10,000+ hours — outstanding oxidation and thermal stability. Particularly effective in remotely located gearboxes where oil change-out is difficult, filled-for-life drives and applications where the maintenance cost of oil changes is high. FZG Stage 13+ & EP Protection FZG scuffing Stage 13+ and FE8 roller wear of 2 mg — outstanding protection against gear scuffing and bearing wear under the high contact loads typical of slow-speed, high-ratio gearboxes. Protects gear tooth flanks and bearing surfaces under sustained maximum torque. High Viscosity Index — 174 VI 174 maintains more stable viscosity across the operating temperature range — ensuring adequate film thickness at elevated gearbox sump temperatures in South African high-ambient-temperature mining environments, while providing reliable cold-start lubrication at low overnight temperatures. Energy Efficiency Low traction coefficient of the PAO base stock reduces fluid friction in gear contacts and rolling element bearing load zones — up to 3.6% energy efficiency improvement versus mineral equivalents in controlled worm gearbox testing. Meaningful savings in high-ratio, continuous-operation gearboxes. Shear Stability Virtually no viscosity loss under mechanical shear in heavily loaded gear and bearing applications — maintaining the ISO VG 460 film thickness throughout the extended drain interval, without the viscosity breakdown that causes increased wear in mineral oils operating beyond their designed drain interval. Seal Compatibility Generally compatible with most NBR, FKM and other elastomeric seal materials used with mineral oils — however, substantial variations in elastomer response are possible. Before converting a system to Mobil SHC 634, consult your equipment supplier or seal manufacturer to verify compatibility with specific seal materials in service. Typical Applications Mobil SHC 634 is recommended where ISO VG 460 is OEM-specified and where operating conditions — extended drain targets, continuous shifts, high loads or elevated temperatures — justify a synthetic formulation over mineral gear oil: Slow-Speed High-Load Gearboxes High-ratio Flender and SEW gearboxes on conveyors, agitators and processing plant drives where ISO VG 460 is OEM-specified · Worm gearboxes where maximum film thickness and energy efficiency are both required · Any enclosed gearbox with OEM viscosity specification of ISO 460 Mining & Processing Plants Processing plant conveyor head drives running continuous shifts · Crusher and screen drives · Agitator and mixer drives specifying ISO 460 · Northern Cape mining equipment where high ambient temperatures push sump temperatures beyond mineral oil limits in summer conditions Extended Drain Applications Any ISO VG 460 gearbox where the target is to extend drain intervals beyond what mineral gear oil can support — particularly inaccessible or elevated gearboxes, filled-for-life drives and equipment where each oil change requires production shutdown High-Load Bearing Applications Mixer roll bearings and roll neck bearings under high temperature · Severe centrifuge applications including marine centrifuges · Plastic calenders · Any bearing application where ISO VG 460 is specified and extended service life and reduced maintenance are the target Technical Properties Property Test Method SHC 634 Value ISO Viscosity Grade — ISO VG 460 Base Stock — Fully Synthetic PAO Appearance AMS 1738 Orange Kinematic Viscosity @ 40°C ASTM D445 460 mm²/s Kinematic Viscosity @ 100°C ASTM D445 50.7 mm²/s Viscosity Index ASTM D2270 174 Pour Point ASTM D5950 -45°C Flash Point (COC) ASTM D92 228°C Density @ 15.6°C ASTM D4052 0.87 kg/l FZG Scuffing Fail Stage ISO 14635-1 (mod) 13+ FE8 Roller Wear DIN 51819-3 2 mg RPVOT Oxidation Life ASTM D2272 2,500 min TOST Oxidation Life ASTM D943 10,000+ hours Rust Characteristics ASTM D665 Proc. B Pass Copper Strip Corrosion ASTM D130 (24h, 121°C) 1B Typical properties — not guaranteed specifications. Source: ExxonMobil Product Data Sheet, February 2026. Specifications & OEM Approvals Flender (Siemens AG) Direct OEM approval — among the most widely installed gearbox brands in South African mining and processing plants SEW-Eurodrive Direct OEM approval — widely installed conveyor, mixer and processing plant gearbox brand across South African industry AGMA 9005-F16 Primary North American gear oil standard referenced by most international gearbox OEMs DIN 51517-3:2018-09 CLP 460 classification — required by German gearbox OEMs including Flender, SEW and Nord ISO 12925-1:2024 — ISO L-CKD International enclosed gear lubricant classification for extreme pressure lubricants NUPIC (Nuclear) US blended product audited and compliant under NUPIC Commercial Grade Vendor Program Pack Sizes & Procurement Available Pack Sizes 20 Litre Available to order 208 Litre Drum Price on request Request Quote 1,000 Litre IBC Price on request Request Quote Orbit Industrial supplies Mobil SHC 634 to mining, manufacturing, processing plant and industrial operations across the Western Cape, Northern Cape, Garden Route and Gauteng. We support B2B tenders, government procurement and large-scale supply contracts with competitive bulk pricing. Request a bulk quote → Technical Documentation PDF Mobil SHC™ 600 Series — Technical Datasheet ExxonMobil Product Data Sheet · February 2026 · Orbit Industrial For Safety Data Sheet (SDS) visit msds.exxonmobil.com → · Contact Orbit Industrial for application-specific technical support. Orbit Industrial Supplies is an authorised Mobil sales agent — supplying genuine Mobil SHC 634 and the full Mobil SHC 600 Series to mining, construction, processing plant, marine and manufacturing operations across the Western Cape, Northern Cape, Garden Route and Gauteng. Mobil SHC 630 (ISO 220) → · Full gear oil range → · Request a quote →