NM 97 플렉시블 조 커플링
NM 97 reference model with 10-42 mm bore range, 7000 rpm maximum reference speed, and forged-iron hub construction shown in the supplied reference page. Final bore, keyway and duty require confirmation.
NM 97 provides a 10-42 mm reference bore range and a 97 mm outside diameter. The supplied sheet records 10.5 Kg*m normal torque, 19 Kg*m maximum torque, 7,000 rpm maximum reference speed and approximately 3.54 kg weight. For replacement work, the 42 mm upper bore value can make NM 97 worth checking when shaft size is the first constraint.
- Broader bore window to 42 mm
- Reference OD 97 mm
- L dimension 50 mm
- Separate steady load from start-up peak
- Confirm the interface near maximum bore
Bore-Range Review
These NM 97 values support replacement comparison. They should be checked beside the existing machine dimensions and never used to bypass an approved bore/keyway drawing.
| 모델 | 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 97 | 10.5 | 19 | 7000 | 10 | 42 | 69 | 97 | 50 | 3.0±1.0 | 3.54 |
Jaw Arrangement
A jaw coupling does more than join two bores. In the NM 97 layout, the forged-iron hub identification and central flexible element describe the basic mechanical arrangement, but the supplied data does not define the complete material system. If the existing machine has unusual heat, lubricant or chemical exposure, record it so the flexible element choice is reviewed rather than copied from appearance.
Peak Load Review
NM 97 selection should not begin from outside diameter alone. Confirm the continuous or nominal torque, then identify any peak from starting, braking or process load. Compare that duty with the reference normal and maximum figures, while independently checking speed and both shaft interfaces. If the larger shaft approaches the listed bore maximum, provide the exact keyway and fit because remaining wall geometry may become a decisive issue.
Replacement Installation
For replacement installations, measure the old hub positions before removal and compare them with the new drawing. Clean the shafts, verify key seating, install without excessive force and align the equipment with appropriate instruments. Once the flexible element is fitted, rotate the assembly manually when practical to confirm free motion and uniform seating before power is applied.
Machine Context
NM 97 can be evaluated for general motor-driven industrial equipment in the same way as other jaw couplings: from power or torque, speed, shaft dimensions, duty pattern and environment. A pump and a compressor with similar motors can still impose different transient behavior. Include the machine type because it affects the engineering questions, but do not use the machine label as the only sizing input.
Upper-Bore Customization
When a custom bore is requested near the upper end of the NM 97 reference range, the drawing should show keyway width/depth, fit and any hub-side retention feature. OEM marking, finish and packaging can then be layered onto the confirmed functional configuration. Special materials should be quoted as deviations, not silently substituted.
Quantity Definition
List the required quantity per bore combination. A single NM 97 model with several shaft pairs may need separate setup and inspection even if the outer casting is shared. New-client samples can be evaluated before larger production, with sample pricing reflecting machining and setup.
Frequently Asked Questions
What deserves attention near the NM 97 maximum bore?
The table lists 42 mm as the upper reference bore. A large bore plus its keyway can reduce remaining hub section, so send the exact fit and key dimensions for review.
Why provide peak torque as well as normal torque?
Starting, braking or process events can be much higher than steady running. The table separates normal and maximum values, and the RFQ should explain how the machine reaches those loads.
Can an old coupling be replaced from OD alone?
No. Measure shaft interfaces, hub length/spacing and other critical dimensions. A matching outside diameter does not prove that the bore, key, torque or speed requirements are compatible.
What is the best order information to send?
List quantity by bore combination, any sample requirement and whether the item is a recurring production part. Include the existing drawing or a dimensioned sketch when available.
Request NM 97 Review
Please include both shaft dimensions, motor power and speed or torque, quantity and application.
