کوپلینگ فکی انعطاف پذیر NM 148
NM 148 reference model with 22-65 mm bore range, 4500 rpm maximum reference speed, and forged-iron hub construction shown in the supplied reference page. Final bore, keyway and duty require confirmation.
NM 148 is listed at 41.7 Kg*m normal torque, 75 Kg*m maximum torque and 4,500 rpm maximum reference speed. The bore range is 22-65 mm, outside diameter 148 mm, distance L 80 mm and approximate weight 13.50 kg. At this frame size, guard clearance, service access and assembly handling become meaningful parts of the RFQ.
- Large-frame OD 148 mm
- Reference L 80 mm
- Normal torque line 41.7 Kg*m
- Verify guard and maintenance clearance
- Plan handling before fitting
Large-Frame Envelope
Read the NM 148 row as identification data plus an envelope check. The final proposal must reconcile those values with shaft machining, service load and access around the coupling.
| مدل | Normal Torque (Kg*m) | Max Torque (Kg*m) | Max RPM | Bore Min (mm) | Bore Max (mm) | Boss D (mm) | Outside OD (mm) | Distance L (mm) | Space S (mm) | Approx. Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| NM 148 | 41.7 | 75 | 4500 | 22 | 65 | 107 | 148 | 80 | 3.5±1.0 | 13.50 |
Hub Construction
The documented NM construction shows forged-iron hubs and a replaceable flexible center member. On NM 148, the larger physical envelope makes hub geometry and surrounding guard space easier to overlook if selection is performed only from torque. The provided sheet does not specify the element compound, so material compatibility must be confirmed when temperature or chemical exposure is significant.
Space And Load Check
Review NM 148 in a sequence that starts with the machine load, then the shafts, then the envelope. Record normal torque, peak torque and running rpm. Check the 22-65 mm bore window against both shafts and keys. Finally compare the 148 mm outside diameter and 80 mm distance L with guards, adjacent bearings and removal space. An acceptable torque value is not enough if maintenance cannot remove the element or hub.
Service Access
Before assembly, confirm there is room to handle and support each hub. Avoid using the coupling to pull shafts into alignment. Establish machine alignment first, fit keys correctly and set the prescribed spacing. Because a larger hub carries more mass, recheck fasteners or shaft retention after initial operation according to the project maintenance plan and investigate any change in vibration promptly.
Application Review
NM 148 may be reviewed for larger motor-driven pumps, fans, compressors, conveyors and general industrial equipment when the complete duty remains within an approved selection. For equipment with heavy starts or material surges, describe the transient event. If maintenance access is limited, include a site photo or guard drawing so serviceability can be considered before manufacturing.
Custom Hub Details
A custom NM 148 quotation can address unequal bores, keyways, fits, marking, coating and packaging. Any request that modifies hub length or outside geometry should be shown on the approval drawing and checked against the installation envelope. Do not rely on the model number alone once structural dimensions are changed.
Batch Definition
For batch planning, provide the number of each bore pair and identify special inspection documentation in advance. Samples remain possible for evaluation, but machining setup and handling mean very small quantities can carry a higher cost per unit.
Frequently Asked Questions
What extra check appears on NM 148?
Service access becomes more important as the frame grows. Confirm that the guard and surrounding equipment allow hub fitting, element inspection and future removal.
Should the 75 Kg*m maximum value be treated as continuous?
No. The supplied sheet separately lists normal and maximum torque. State the steady duty and any temporary peak so the proposal is reviewed on the correct basis.
What if the machine has limited axial access?
Send a guard or section drawing and the existing hub positions. Installation practicality should be reviewed before the bore configuration is released.
How should several NM 148 bore pairs be quoted?
List the quantity for each driver/driven shaft combination. Different bore setups may require separate machining and inspection even when the model code is the same.
Request NM 148 Review
Please include both shaft dimensions, motor power and speed or torque, quantity and application.
