{"id":539,"date":"2026-05-26T05:35:55","date_gmt":"2026-05-26T05:35:55","guid":{"rendered":"https:\/\/planetary-gearboxes.com\/?post_type=product&p=539"},"modified":"2026-05-26T05:35:55","modified_gmt":"2026-05-26T05:35:55","slug":"vr-concentric-precision-gearbox","status":"publish","type":"product","link":"https:\/\/planetary-gearboxes.com\/zh\/product\/vr-concentric-precision-gearbox\/","title":{"rendered":"\u7528\u4e8e\u9ad8\u901f\u4f3a\u670d\u7684\u540c\u5fc3\u7cbe\u5bc6\u884c\u661f\u9f7f\u8f6e\u7bb1 \u2014 VR\u7cfb\u5217"},"content":{"rendered":"

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Concentric Planetary Gearbox \u2014 Co-Axial Precision for Compact Servo Drives<\/h2>\n
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\"VR<\/p>\n

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Co-Axial<\/div>\n
Input = Output Axis<\/div>\n<\/div>\n
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3\u201381<\/div>\n
Gear Ratio<\/div>\n<\/div>\n
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S + F<\/div>\n
Input Types<\/div>\n<\/div>\n
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B\u2013E<\/div>\n
\u753b\u6846\u5c3a\u5bf8<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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\u8fd9 VR series concentric planetary gearbox<\/strong> solves a specific integration problem that flange-output reducers cannot: applications where the driven shaft must be co-axial with the motor shaft, the machine envelope prohibits any lateral offset between motor and load, and the speed reduction must be achieved without right-angle or offset gear stages that add length, weight, and backlash. The VR’s inline co-axial output keeps motor and load on the same centreline axis \u2014 motor shaft in, reduced output shaft out on the same axis \u2014 in a housing diameter that adds only the planetary ring gear wall thickness to the motor’s own frame diameter.<\/p>\n

Two input configurations address the full range of motor coupling scenarios: S-type (solid input shaft)<\/strong> for direct coupling via bellows or jaw couplings to standard motor shafts, and F-type (hollow bore input)<\/strong> for direct motor shaft through-mounting that eliminates the coupling hardware entirely \u2014 reducing backlash contribution, cutting assembly time, and minimising overall system length. Frame sizes B through E cover servo motor compatibility from 50 W to 5,000 W<\/strong> with gear ratios spanning 3:1 to 81:1.<\/p>\n

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\ud83d\udcd0 True Co-Axial<\/div>\n
Motor and load share exact centreline \u2014 no offset, no lateral bulk.<\/div>\n<\/div>\n
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\ud83d\udd29 F-Type Hollow Bore<\/div>\n
Motor shaft slides through \u2014 zero coupling hardware, minimum length.<\/div>\n<\/div>\n
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\ud83c\udfaf Minimal Runout<\/div>\n
Co-axial geometry achieves best-in-range concentricity and radial runout.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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Technical Specifications \u2014 Frames B through E, S & F Input Types<\/h2>\n

S-type and F-type variants share identical external dimensions and output flanges within each frame size. The difference is solely the input coupling method \u2014 choose S-type when you need a separate coupling component, F-type when direct motor shaft through-mounting fits your assembly process.<\/p>\n

\"VR\u00a0<\/p>\n

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VR-S Type \u2014 Solid Input Shaft<\/h3>\n