{"id":3589,"date":"2026-07-08T08:33:35","date_gmt":"2026-07-08T08:33:35","guid":{"rendered":"https:\/\/rigid-shaft-coupling.top\/product\/yld7-yld-flanged-coupling-28-110mm-bore-spacer-type-rigid-shaft-connector-gb5843-86\/"},"modified":"2026-07-08T08:33:36","modified_gmt":"2026-07-08T08:33:36","slug":"yld7-yld-flanged-coupling-28-110mm-bore-spacer-type-rigid-shaft-connector-gb5843-86","status":"publish","type":"product","link":"https:\/\/rigid-shaft-coupling.top\/ta\/product\/yld7-yld-flanged-coupling-28-110mm-bore-spacer-type-rigid-shaft-connector-gb5843-86\/","title":{"rendered":"YLD7 YLD Flanged Coupling \u2013 28\u2013110mm Bore Spacer Type Rigid Shaft Connector GB5843-86"},"content":{"rendered":"
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YLD7 YLD Type Flanged Coupling \u2013 28\u2013110mm Bore Rigid Bolted-Flange Shaft Connector to GB5843-86<\/h1>\n

The YLD7 YLD type flanged coupling<\/strong> is a YLD type flanged coupling with alignment tenon and spacer body designed to connect two co-axial cylindrical shaft ends rigidly through a bolted flange joint, conforming to Chinese national standard GB5843-86. With a 120 mm outer diameter, 28\u2013110 mm bore range, and nominal torque rating of 160 N\u00b7m, the YLD7 serves shaft connections in industrial drives where a rigid, zero-backlash connection is required combined with the ability to disconnect the two shaft ends by removing the flange bolts \u2014 without moving either shaft axially. Maximum speed rating is 4800 rpm for cast iron hubs and 7600 rpm for cast steel hubs. Overall length including spacer: 458 mm (spacer length L0 = 168 mm). The spacer body provides maintenance access clearance between the two hub faces.<\/p>\n

The YL type flanged coupling consists of two identical hub halves, each machined with a bore and keyway to receive one shaft end, and each terminating in a precision-machined circular flange. The two flanges are bolted together with 4\u00d7M10 reamed-hole precision bolts that both clamp the faces together and transmit shear torque through the bolt shank. Torque is transmitted from each shaft into its hub through the key-keyway engagement, through the hub body to the flange face, and across the bolted joint to the opposing hub and shaft. The result is a rigid, zero-backlash connection that can be separated by removing the 4 flange bolts without disturbing shaft alignment \u2014 an advantage over sleeve couplings that require axial shaft movement for installation or removal. The YLD type’s precision alignment tenon on each flange face ensures that the two hub halves re-centre automatically when the bolts are tightened after maintenance reassembly, eliminating the need for dial indicator realignment.<\/p>\n

The YLD7 conforms to GB5843-86, which specifies dimensions for flanged couplings for cylindrical shaft connections transmitting nominal torques from 10 to 20,000 N\u00b7m. Bore and keyway dimensions conform to GB3852-1997. The complete YL and YLD flanged coupling range is listed on 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\n\n\n
Parameter<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
Model<\/td>\nYLD7<\/td>\n<\/tr>\n
Type<\/td>\nYLD Type Flanged Coupling with Alignment Tenon<\/td>\n<\/tr>\n
Standard<\/td>\nGB 5843-86<\/td>\n<\/tr>\n
Bore Range (d)<\/td>\n28\u2013110 mm<\/td>\n<\/tr>\n
Outer Diameter (D)<\/td>\n120 mm<\/td>\n<\/tr>\n
Flange Diameter (D1)<\/td>\n95 mm<\/td>\n<\/tr>\n
Overall Length (L)<\/td>\n458 mm<\/td>\n<\/tr>\n
Spacer \/ Face Distance (L0)<\/td>\n168 mm<\/td>\n<\/tr>\n
Flange Bolts<\/td>\n4\u00d7M10<\/td>\n<\/tr>\n
Nominal Torque (Tn)<\/td>\n160 N\u00b7m<\/td>\n<\/tr>\n
Max Speed \u2013 Cast Iron<\/td>\n4800 rpm<\/td>\n<\/tr>\n
Max Speed \u2013 Cast Steel<\/td>\n7600 rpm<\/td>\n<\/tr>\n
Rotational Inertia<\/td>\n0.044 kg\u00b7m\u00b2<\/td>\n<\/tr>\n
Mass<\/td>\n8.8 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Structure Drawing<\/h2>\n

\"YLD7<\/p>\n

Dimension Reference<\/h2>\n

\"YLD7<\/p>\n

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Rigid Zero-Backlash Connection<\/h3>\n

The bolted flange joint transmits torque rigidly with zero angular play. Every rotational increment on the driving shaft is replicated exactly on the driven shaft \u2014 essential for position feedback and phase-critical drive applications.<\/p>\n<\/div>\n

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Disconnect Without Shaft Movement<\/h3>\n

Removing the flange bolts disconnects the two shaft ends without moving either shaft axially. This allows motor removal, driven equipment service, or shaft inspection without disturbing bearing housings or shaft alignment.<\/p>\n<\/div>\n

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Cast Iron \/ Cast Steel Options<\/h3>\n

Hub material choice of cast iron (4800 rpm) or cast steel (7600 rpm) covers both standard industrial speed requirements and higher-speed applications. The torque rating is the same for both materials.<\/p>\n<\/div>\n

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GB5843-86 Standard Compliance<\/h3>\n

Full conformance to national standard GB5843-86 ensures dimensional interchangeability with other GB-compliant couplings. Keyway dimensions per GB3852-1997 ensure compatibility with standard motor and driven equipment shaft keyways.<\/p>\n<\/div>\n<\/div>\n

Manufacturing<\/h2>\n

\"Ever<\/p>\n

Typical Applications<\/h2>\n