{"id":3474,"date":"2026-07-08T05:14:21","date_gmt":"2026-07-08T05:14:21","guid":{"rendered":"https:\/\/rigid-shaft-coupling.top\/product\/sts7-32-stainless-steel-setscrew-rigid-coupling-32mm-od-316ss-high-torque-corrosion-resistant-coupler\/"},"modified":"2026-07-08T05:14:29","modified_gmt":"2026-07-08T05:14:29","slug":"sts7-32-stainless-steel-setscrew-rigid-coupling-32mm-od-316ss-high-torque-corrosion-resistant-coupler","status":"publish","type":"product","link":"https:\/\/rigid-shaft-coupling.top\/nl\/product\/sts7-32-stainless-steel-setscrew-rigid-coupling-32mm-od-316ss-high-torque-corrosion-resistant-coupler\/","title":{"rendered":"STS7-32 Stainless Steel Setscrew Rigid Coupling \u2013 32mm OD 316SS High-Torque Corrosion-Resistant Coupler"},"content":{"rendered":"
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STS7-32 Stainless Steel Setscrew Rigid Coupling \u2013 32 mm OD 316SS High-Torque Corrosion-Resistant Coupler<\/h1>\n

The STS7-32<\/strong> is the 316 stainless steel version of the TS7-32, delivering 2 N\u00b7m rated torque at up to 10,000 rpm through a 32 mm OD body with bore range of 12 to 16 mm. As with all STS7 variants, the performance parameters are identical to the corresponding aluminum TS7 model \u2014 only the material changes. The STS7-32 is specified when medium servo motor connections (the 12\u201316 mm bore class, 2 N\u00b7m torque class) must be made in an environment that would corrode or degrade aluminum: food processing, dairy, chemical plant, marine automation, and pharmaceutical production environments all fall into this category.<\/p>\n

The STS7-32 weighs 190 g versus 71 g for the TS7-32. The moment of inertia is 2.4 \u00d7 10\u207b\u2076 kg\u00b7m\u00b2. For most servo motor shaft connections in this torque class (typically 400\u2013750 W servo motors), this inertia addition represents a small fraction of the load-side inertia reflected to the motor shaft, and servo loop stability is not affected. The M4 setscrew thread and 1.7 N\u00b7m wrench torque are unchanged from the aluminum version.<\/p>\n

Material traceability documentation \u2014 mill certificates confirming 316 stainless composition \u2014 is available on request, supporting procurement for offshore, food safety, and pharmaceutical regulated applications. See our full product catalog<\/a> for all STS7 stainless rigid coupling models.<\/p>\n

Technical Specifications<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
Model<\/td>\nSTS7-32<\/td>\n<\/tr>\n
Body Material<\/td>\n316 Stainless Steel<\/td>\n<\/tr>\n
Outer Diameter (D)<\/td>\n32 mm<\/td>\n<\/tr>\n
Overall Length (L)<\/td>\n41 mm<\/td>\n<\/tr>\n
Hub Length (L1)<\/td>\n10 mm<\/td>\n<\/tr>\n
Available Bore Sizes<\/td>\n12, 14, 15, 16 mm<\/td>\n<\/tr>\n
Setscrew Thread<\/td>\nM4<\/td>\n<\/tr>\n
Wrench Torque<\/td>\n1.7 N\u00b7m<\/td>\n<\/tr>\n
Rated Torque<\/td>\n2 N\u00b7m<\/td>\n<\/tr>\n
Maximum Torque<\/td>\n4 N\u00b7m<\/td>\n<\/tr>\n
Maximum Rotational Speed<\/td>\n10,000 rpm<\/td>\n<\/tr>\n
Moment of Inertia<\/td>\n2.4 \u00d7 10\u207b\u2076 kg\u00b7m\u00b2<\/td>\n<\/tr>\n
Mass<\/td>\n190 g<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Dimension Drawing<\/h2>\n

\"STS7-32<\/p>\n

Corrosion Resistance in Practice<\/h2>\n

At the 32 mm frame size, the STS7-32 is frequently installed in food processing conveyor drives, dairy washdown zones, and chemical plant instrumentation where the daily or weekly environment would rapidly attack an aluminum coupling surface. The 316 stainless body maintains dimensional integrity and surface finish through CIP cycles, steam cleaning, and solvent wipe-downs without the surface pitting, oxidation, or material removal that compromises coupling performance and service life in aluminum. This durability directly reduces coupling replacement frequency and unplanned maintenance in continuous-production environments.<\/p>\n

Typical Applications<\/h2>\n
    \n
  • Servo encoder connections on stainless washdown conveyor drives<\/strong> in meat, fish, and dairy processing<\/li>\n
  • Chemical dosing pump servo drives<\/strong> in acid or alkali vapour-exposed plant rooms<\/li>\n
  • Offshore winch and handling equipment encoder connections<\/strong> with salt spray and humidity exposure<\/li>\n
  • Marine hydraulic servo valve feedback shafts<\/strong> where stainless is required by classification rules<\/li>\n
  • Pharmaceutical lyophiliser drive encoder connections<\/strong> in CIP-qualified equipment<\/li>\n<\/ul>\n

    Customer Reviews and Case Studies<\/h2>\n
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    \n

    \u2605\u2605\u2605\u2605\u2605<\/p>\n

    Ireland \u2014 Dairy Processing Equipment<\/p>\n

    We produce automated dairy filling lines and specified the STS7-32 for servo encoder connections in the filling zone. Chlorinated CIP runs three times daily \u2014 only 316SS is acceptable. The coupling has performed without corrosion or mechanical issues across two production seasons.<\/p>\n

    \u2014 Project Engineer, Cork<\/p>\n<\/div>\n

    \n

    \u2605\u2605\u2605\u2605\u2605<\/p>\n

    Norway \u2014 Marine Systems Integrator<\/p>\n

    Used in servo-driven deck winch encoder feedback on a PSV. Classification required stainless material for all encoder components on deck. STS7-32 met the material requirement and dimensions matched our installation exactly. Now our standard model for all similar applications.<\/p>\n

    \u2014 Systems Engineer, Stavanger<\/p>\n<\/div>\n

    \n

    \u2605\u2605\u2605\u2605\u2606<\/p>\n

    Brazil \u2014 Chemical Plant Maintenance<\/p>\n

    Replacement couplings for HCl vapour-exposed dosing pump servo drives. Previous aluminum couplings failed within weeks. The STS7-32 has been operating 10 months without corrosion. The 14\/16 mm bore combination matched without modification.<\/p>\n

    \u2014 Maintenance Supervisor, S\u00e3o Paulo<\/p>\n<\/div>\n<\/div>\n

    Frequently Asked Questions<\/h2>\n