{"id":3509,"date":"2026-07-08T05:16:59","date_gmt":"2026-07-08T05:16:59","guid":{"rendered":"https:\/\/rigid-shaft-coupling.top\/product\/ts7z85x130-locking-assembly-rigid-coupling-85mm-shaft-130mm-od-keyless-hub-connection\/"},"modified":"2026-07-08T05:17:04","modified_gmt":"2026-07-08T05:17:04","slug":"ts7z85x130-locking-assembly-rigid-coupling-85mm-shaft-130mm-od-keyless-hub-connection","status":"publish","type":"product","link":"https:\/\/rigid-shaft-coupling.top\/id\/product\/ts7z85x130-locking-assembly-rigid-coupling-85mm-shaft-130mm-od-keyless-hub-connection\/","title":{"rendered":"TS7Z85\u00d7130 Locking Assembly Rigid Coupling \u2013 85mm Shaft 130mm OD Keyless Hub Connection"},"content":{"rendered":"
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TS7Z85\u00d7130 Locking Assembly \u2013 85mm Shaft 130mm OD Keyless Rigid Shaft-Hub Connector<\/h1>\n

The TS7Z85\u00d7130<\/strong> addresses 85 mm shaft connections with a rated torque of 3.69 kN\u00b7m and a high axial force capacity of 123 kN. Applications include large industrial fan impeller hubs, heavy-duty conveyor terminal drum connections, and industrial crusher shaft-hub interfaces where sustained high torque combined with shock loading defines the service condition. 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 62 MPa for the TS7Z85\u00d7130 at the specified M_a of 84 N\u00b7m \u2014 generates a friction connection that transmits both torque (Mt = 3.69 kN\u00b7m) and axial force (Ft = 123 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>\nTS7Z85\u00d7130<\/td>\n<\/tr>\n
Type<\/td>\nLocking Assembly (Keyless Shaft-Hub Connection)<\/td>\n<\/tr>\n
Shaft Bore (d)<\/td>\n85 mm<\/td>\n<\/tr>\n
Outer Diameter (D)<\/td>\n130 mm<\/td>\n<\/tr>\n
Rated Axial Force (Ft)<\/td>\n123 kN<\/td>\n<\/tr>\n
Rated Torque (Mt)<\/td>\n3.69 kN\u00b7m<\/td>\n<\/tr>\n
Surface Pressure (Ps)<\/td>\n62 MPa<\/td>\n<\/tr>\n
Installation Screw Torque (Ma)<\/td>\n84 N\u00b7m<\/td>\n<\/tr>\n
Mass (G)<\/td>\n5.5 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

\"TS7Z85\u00d7130<\/p>\n

Structural Cross-Section<\/h2>\n

\"TS7Z85\u00d7130<\/p>\n

Installation and Design Guidance<\/h2>\n

\"TS7Z85\u00d7130<\/p>\n

Installation of the TS7Z85\u00d7130 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 = 84 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 (62 MPa) \u2264 0.9 \u00d7 shaft yield strength. For C45 steel (yield ~370 MPa): 0.9 \u00d7 370 = 333 MPa > 62 MPa \u2014 acceptable. For aluminium alloy 6061-T6 (yield ~275 MPa): 0.9 \u00d7 275 = 247 MPa; compare with 62 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

France \u2014 Food & Beverage Processing<\/p>\n

Installed on conveyor drive shaft connections in our bottling plant. The TS7Z85\u00d7130 allowed installation by our maintenance team using only standard torque tools. The published surface pressure of 62 MPa was used to verify shaft suitability in our design review, which is not possible with conventional keyed connections.<\/p>\n

\u2014 Applications Engineer, Lyon<\/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 TS7Z85\u00d7130 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

Argentina \u2014 Pump & Compressor OEM<\/p>\n

Installed on compressor crankshaft to flywheel connections on our reciprocating gas compressors. The locking assembly’s keyless connection distributes torque through friction over the full bore surface rather than concentrating load at a key, which our fatigue analysis showed extended shaft service life by an estimated 40% under our operating cycle.<\/p>\n

\u2014 Engineering Manager, Buenos Aires<\/p>\n<\/div>\n<\/div>\n

Frequently Asked Questions<\/h2>\n