{"id":3500,"date":"2026-07-08T05:16:20","date_gmt":"2026-07-08T05:16:20","guid":{"rendered":"https:\/\/rigid-shaft-coupling.top\/product\/ts7z45x85-locking-assembly-rigid-coupling-45mm-shaft-85mm-od-keyless-hub-connection\/"},"modified":"2026-07-08T05:16:25","modified_gmt":"2026-07-08T05:16:25","slug":"ts7z45x85-locking-assembly-rigid-coupling-45mm-shaft-85mm-od-keyless-hub-connection","status":"publish","type":"product","link":"https:\/\/rigid-shaft-coupling.top\/zh\/product\/ts7z45x85-locking-assembly-rigid-coupling-45mm-shaft-85mm-od-keyless-hub-connection\/","title":{"rendered":"TS7Z45\u00d785 Locking Assembly Rigid Coupling \u2013 45mm Shaft 85mm OD Keyless Hub Connection"},"content":{"rendered":"
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TS7Z45\u00d785 Locking Assembly \u2013 45mm Shaft 85mm OD Keyless Rigid Shaft-Hub Connector<\/h1>\n

The TS7Z45\u00d785<\/strong> represents a significant step up in torque capacity: Ft reaches 46.8 kN and Mt reaches 0.982 kN\u00b7m \u2014 more than double the corresponding values for the 40 mm bore models. The 45 mm shaft size is standard in IEC frame 250 motors and large gearbox output shafts in the 55\u2013110 kW drive class, making this model one of the most widely used locking assemblies in medium-to-large industrial drive applications. For a complete listing of all TS7Z locking assembly models, visit our product catalog<\/a>.<\/p>\n

The TS7Z locking assembly operates on the principle of tapered ring compression: two tapered steel rings \u2014 inner and outer \u2014 are drawn together axially by the clamping screws. The taper geometry converts axial screw preload into a radial clamping force, expanding the inner ring against the shaft surface and contracting the outer ring against the hub bore simultaneously. The resulting surface pressure \u2014 74 MPa for the TS7Z45\u00d785 at the specified M_a of 42 N\u00b7m \u2014 generates a friction connection that transmits both torque (Mt = 0.982 kN\u00b7m) and axial force (Ft = 46.8 kN) without any mechanical interlock element. No keyway is required in either the shaft or the hub bore.<\/p>\n

The elimination of the keyway is the principal engineering advantage of the TS7Z over traditional keyed hub connections. A keyway introduces a stress concentration at its corners that can initiate fatigue cracks under the cyclic torsion loading of a rotating drive \u2014 particularly at high surface hardness or in applications with frequent torque reversals. The TS7Z distributes torque loading uniformly around the full circumference of the shaft bore, eliminating this stress riser and significantly extending the fatigue life of the connected shafts. For high-cycle, high-torque drives \u2014 mills, fans, compressors, and crushers \u2014 this durability improvement is a primary selection rationale.<\/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>\nTS7Z45\u00d785<\/td>\n<\/tr>\n
Type<\/td>\nLocking Assembly (Keyless Shaft-Hub Connection)<\/td>\n<\/tr>\n
Shaft Bore (d)<\/td>\n45 mm<\/td>\n<\/tr>\n
Outer Diameter (D)<\/td>\n85 mm<\/td>\n<\/tr>\n
Rated Axial Force (Ft)<\/td>\n46.8 kN<\/td>\n<\/tr>\n
Rated Torque (Mt)<\/td>\n0.982 kN\u00b7m<\/td>\n<\/tr>\n
Surface Pressure (Ps)<\/td>\n74 MPa<\/td>\n<\/tr>\n
Installation Screw Torque (Ma)<\/td>\n42 N\u00b7m<\/td>\n<\/tr>\n
Mass (G)<\/td>\n2.3 kg<\/td>\n<\/tr>\n
Material<\/td>\nSteel<\/td>\n<\/tr>\n
Standard<\/td>\nGB\/T 5106 compatible<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Dimensional Reference<\/h2>\n

\"TS7Z45\u00d785<\/p>\n

Structural Cross-Section<\/h2>\n

\"TS7Z45\u00d785<\/p>\n

Installation and Design Guidance<\/h2>\n

\"TS7Z45\u00d785<\/p>\n

Installation of the TS7Z45\u00d785 requires the shaft surface to be clean, dry, and within an h6 or k6 shaft tolerance, with a surface finish of Ra 0.8\u20131.6 \u03bcm. The hub bore should be machined to H7 tolerance. Clamping screw threads and head bearing faces must be lubricated with MoS\u2082 paste before installation to ensure the M_a = 42 N\u00b7m tightening torque produces the correct clamping force. Tighten all screws in a star pattern in at least three progressive passes \u2014 do not fully tighten one screw before the others.<\/p>\n

To verify shaft material suitability, check: Ps (74 MPa) \u2264 0.9 \u00d7 shaft yield strength. For C45 steel (yield ~370 MPa): 0.9 \u00d7 370 = 333 MPa > 74 MPa \u2014 acceptable. For aluminium alloy 6061-T6 (yield ~275 MPa): 0.9 \u00d7 275 = 247 MPa; compare with 74 MPa for this model. If the shaft material yield strength is insufficient, contact our contact our team<\/a> for a re-rated configuration.<\/p>\n

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Keyless Design<\/h3>\n

No keyway in shaft or hub. Eliminates keyway stress concentration and fretting wear. Angular position can be set freely \u2014 no keyway angular constraint.<\/p>\n<\/div>\n

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Self-Releasing Disassembly<\/h3>\n

Back off clamping screws in a star pattern \u2014 the taper geometry produces a self-releasing action requiring no extraction tools or heat. Shaft and hub surfaces are undamaged after removal.<\/p>\n<\/div>\n

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Uniform Load Distribution<\/h3>\n

Torque is transmitted through friction uniformly around the full shaft circumference, distributing stress evenly and enabling the same torque to be carried at lower peak shaft stress than a keyed connection.<\/p>\n<\/div>\n

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Bidirectional Torque<\/h3>\n

Frictional connection transmits equal torque in both rotational directions. No directional constraint \u2014 suitable for reversing drive applications without additional design consideration.<\/p>\n<\/div>\n<\/div>\n

Customer Reviews and Case Studies<\/h2>\n
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\u2605\u2605\u2605\u2605\u2605<\/p>\n

Mexico \u2014 Textile Machinery OEM<\/p>\n

Specified for weaving machine main shaft connections. The TS7Z45\u00d785 provides a vibration-resistant keyless connection that eliminates the micro-fretting wear we experienced with key-and-keyway connections under the high-cycle, low-amplitude vibration loading of our textile machinery.<\/p>\n

\u2014 Technical Buyer, Monterrey<\/p>\n<\/div>\n

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

Norway \u2014 Oil & Gas Field Equipment<\/p>\n

We use the TS7Z45\u00d785 for mud pump crankshaft to drive shaft connections at our drilling facility. The locking assembly’s keyless design eliminates the keyway stress riser from the crankshaft, which was a fatigue crack initiation concern at our previous scheduled inspection.<\/p>\n

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

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

Belgium \u2014 Industrial Fan Manufacturing<\/p>\n

Used in industrial fan impeller hub connections in our power station forced-draft fan installations. The TS7Z45\u00d785’s even radial preload distribution minimises hub distortion under the fan’s rotor dynamic loading, which is important for maintaining the dynamic balance quality of the assembled fan rotor.<\/p>\n

\u2014 Technical Manager, Ghent<\/p>\n<\/div>\n<\/div>\n

Frequently Asked Questions<\/h2>\n