tailieunhanh - Industrial Machinery Repair Part 8

Tham khảo tài liệu 'industrial machinery repair part 8', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Couplings 229 Table Coupling application overview Application Coupling selection recommendation Limited Misalignment Compensation Variable high-torque machine trains operating at moderate speeds Run-out table rolls Vertical pump shafting Keys and keyways not appropriate . brass shafts Transmission of proportionately high torque at low speeds Transmission of proportionately high torque at both high and low speeds Allowance for axial movement and reduction of heat and axial vibration Moderate rotational torque and shaft speed Small equipment that does not experience high torque loads Torsional stiffness while allowing flexibility in axial movement Light- or medium-duty applications running at moderate speeds Gradual acceleration and limited maximum torque for fixed operating speeds . compressors Variable or high torque and or speed transmission Greater Misalignment Compensation Maintenance requiring considerable distance between the driver and driven shaft ends. Misalignment results from expansion due to high process temperatures. Metallic-grid combination couplings Elastomeric flexible couplings Flanged rigid couplings split rigid or clamp couplings Rigid compression couplings Chain couplings mechanical-flexing Gear couplings mechanical-flexing Laminated disk-ring couplings material-flexing Bellows couplings material-flexing Flexible shaft or spring couplings material-flexing Diaphragm material-flexing couplings Elastomeric couplings materialflexing Hydraulic or fluid couplings Flexible couplings rated for the maximum torque requirement Floating-shaft or spacer couplings Note Rigid couplings are not designed to absorb variations in torque and speed and should not be used in such applications. Maximum in-service coupling speed should be at least 15 below the maximum coupling speed rating. 230 Couplings The maximum in-service speed of a coupling should be well below at least 15 the maximum speed rating. The 15 margin provides a service factor that should be

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