{"id":3526,"date":"2026-07-08T07:00:55","date_gmt":"2026-07-08T07:00:55","guid":{"rendered":"https:\/\/rigid-shaft-coupling.top\/product\/jq-70-jq-type-clamping-coupling-70mm-bore-split-body-reactor-stirring-shaft-connector\/"},"modified":"2026-07-08T07:01:02","modified_gmt":"2026-07-08T07:01:02","slug":"jq-70-jq-type-clamping-coupling-70mm-bore-split-body-reactor-stirring-shaft-connector","status":"publish","type":"product","link":"https:\/\/rigid-shaft-coupling.top\/fr\/product\/jq-70-jq-type-clamping-coupling-70mm-bore-split-body-reactor-stirring-shaft-connector\/","title":{"rendered":"JQ-70 JQ Type Clamping Coupling \u2013 70mm Bore Split-Body Reactor Stirring Shaft Connector"},"content":{"rendered":"
\n

JQ-70 JQ Type Clamping Coupling \u2013 70mm Split-Body Reactor Stirring Shaft Connection<\/h1>\n

The JQ-70 JQ type clamping coupling<\/strong> is a split-body rigid shaft connector engineered for reactor stirring shaft applications where the shaft is manufactured in two sections \u2014 either because the complete shaft length exceeds what can be handled as a single piece during installation, or because a vertical gearbox output shaft must be connected to the reactor agitator shaft with non-standard bore dimensions. At 172 mm outer diameter and 250 mm overall length, the JQ-70 is sized for 70 mm shaft connections with a nominal torque rating of 1400 N\u00b7m, covering the full operating torque range of industrial agitator drives at this shaft size.<\/p>\n

The JQ clamping coupling operates on the principle of split-body radial clamping: the coupling body is manufactured in two semi-cylindrical halves that wrap around the two shaft ends from the side and are drawn together by 8\u201318 clamping bolts. When the bolts are tightened to the specified torque, the bore halves compress against the shaft surfaces, generating a friction grip that transmits the rated torque without requiring any keyway or interference fit. This assembly method is particularly valuable in plant installations where shaft end access is restricted \u2014 above reactor vessels, between flanged connections, or in confined equipment rooms \u2014 because the coupling assembles laterally around the shaft rather than requiring axial shaft movement through the bore.<\/p>\n

The ability to disassemble the coupling without shaft modification is a significant maintenance advantage. When the coupling bolts are released, the two body halves separate cleanly, leaving both shaft surfaces intact and undamaged for reuse. This is in contrast to interference-fit or keyed hub connections, which typically require heat, pressing, or shaft modification to disassemble. For the full range of clamping and rigid coupling models, visit our product catalog page<\/a>.<\/p>\n

Technical Specifications<\/h2>\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>\nJQ-70<\/td>\n<\/tr>\n
Type<\/td>\nJQ Type Clamping Coupling (Split-Body)<\/td>\n<\/tr>\n
Bore Diameter (dg H7)<\/td>\n70 mm<\/td>\n<\/tr>\n
Outer Diameter (D)<\/td>\n172 mm<\/td>\n<\/tr>\n
Overall Length (L)<\/td>\n250 mm<\/td>\n<\/tr>\n
Shaft Insertion Length (L1)<\/td>\n30 mm<\/td>\n<\/tr>\n
Hub Length (L2)<\/td>\n110 mm<\/td>\n<\/tr>\n
Body Length (L0)<\/td>\n124 mm<\/td>\n<\/tr>\n
Clamping Bolts (n\u2013d0)<\/td>\n8\u201318<\/td>\n<\/tr>\n
Nominal Torque (Tn)<\/td>\n1400 N\u00b7m<\/td>\n<\/tr>\n
Mass<\/td>\n25.06 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* Bore tolerance H7 standard; H8\/j7 available. Non-standard bore sizes available on request \u2014 specify at order time.<\/p>\n

Dimension Drawing<\/h2>\n

\"JQ-70<\/p>\n

Split-Body Design and Operational Features<\/h2>\n

\"JQ-70<\/p>\n

The JQ-70’s split-body construction is the defining functional feature of the JQ series. Each half of the coupling body contains one full bore semicircle, and the two halves are precision-machined to mate at the split plane with minimal gap when the clamping bolts are torqued. The bore surface is machined to H7 tolerance as standard, providing a controlled interference-adjacent fit against the shaft end for maximum friction grip area. The clamping bolt arrangement \u2014 8\u201318 bolts distributed around the split flange \u2014 provides symmetric clamping force across the bore circumference, minimising the risk of shaft deflection or misalignment from uneven bolt loading.<\/p>\n

Installation requires no special tooling beyond a calibrated torque wrench. The two shaft ends are brought into position, the coupling halves are placed around them, and the bolts are tightened progressively in a cross pattern until the specified bolt torque is achieved on all fasteners. The specified body length L0 of 124 mm accommodates the gap between shaft ends inside the coupling. For non-standard shaft configurations where the gap dimension is critical, custom body lengths can be specified \u2014 contact our technical team<\/a> for assistance.<\/p>\n

Manufacturing Quality<\/h2>\n

\"Ever<\/p>\n

\n
\n

Keyless Shaft Connection<\/h3>\n

No keyway required in either shaft section. The friction clamp transmits the full rated torque through the bore contact surface, eliminating the keyway stress concentration that contributes to shaft fatigue in keyed hub designs.<\/p>\n<\/div>\n

\n

Lateral Assembly<\/h3>\n

Assembles around the shaft from the side \u2014 no axial shaft movement required. Essential for installations in confined spaces, above reactor vessels, or between fixed-position flanges where end access is unavailable.<\/p>\n<\/div>\n

\n

Non-Destructive Disassembly<\/h3>\n

Both shaft ends are released undamaged when the clamping bolts are loosened. Shafts can be reused across multiple coupling replacements \u2014 reducing lifecycle shaft cost and maintenance downtime.<\/p>\n<\/div>\n

\n

Custom Bore Available<\/h3>\n

Non-standard bore diameters for vertical reducer output shafts can be specified at order time. Ever Power machines bores to the stated non-standard dimension, ensuring compatibility with custom gearbox output shafts without adapter sleeves.<\/p>\n<\/div>\n<\/div>\n

Typical Applications<\/h2>\n
    \n
  • Reactor stirring shaft connections<\/strong> \u2014 vertical agitator drives where the shaft is manufactured in two sections for transport or access<\/li>\n
  • Vertical gearbox output to mixer shaft<\/strong> \u2014 non-standard reducer output shaft connections with custom bore sizes<\/li>\n
  • Pharmaceutical and food-grade mixing vessels<\/strong> \u2014 where shaft disassembly for cleaning validation is required without bearing removal<\/li>\n
  • Chemical process agitators<\/strong> \u2014 high-viscosity fluid mixing in batch reactors<\/li>\n<\/ul>\n

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

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

    Finland \u2014 Wood Chip Processing<\/p>\n

    The JQ-70 is installed on wood chip impregnation vessel agitator shaft connections at our pulping plant. The 70 mm shaft size matches our vertical mixer gearbox output, and the clamp coupling’s field-assembly capability was essential in our confined installation space.<\/p>\n

    \u2014 Maintenance Engineer, Tampere<\/p>\n<\/div>\n

    \n

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

    Portugal \u2014 Wine Production Equipment<\/p>\n

    Used on wine fermentation tank agitator drives. The JQ-70 meets our food-contact zone requirements and the split clamp allows shaft removal for annual vessel cleaning without dismantling the bearing assembly.<\/p>\n

    \u2014 Equipment Technician, Porto<\/p>\n<\/div>\n

    \n

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

    Egypt \u2014 Cement Production<\/p>\n

    Installed on raw slurry agitator drives at our cement plant. The JQ-70 handles the dense slurry mixing torque reliably in the dusty, abrasive environment of cement production.<\/p>\n

    \u2014 Mechanical Engineer, Cairo<\/p>\n<\/div>\n<\/div>\n

    Frequently Asked Questions<\/h2>\n