BOLTTE NL Series 45 Steel Gear Couplings and Nylon Sleeves - 55-174 mm OD
NL series gear couplings combine 45 steel hubs with a replaceable nylon internal-tooth sleeve. Complete coupling assemblies and replacement sleeves are available in the model options.
Available options
- Complete couplings: NL2 through NL9, with 55-174 mm outside diameters and model-specific bore ranges.
- Replacement nylon sleeves: model-specific outside diameters and tooth counts.
- Material: 45 steel hubs with a nylon coupling sleeve.
NL coupling or nylon sleeve: choose the supply form
Complete NL couplings and replacement nylon sleeves are separate selectable items. A sleeve selection does not include the steel hubs or their finished shaft bores.
| Selection detail | What to check |
|---|---|
| NL3 Coupling / OD 65 mm | A complete-coupling selection with a model-specific bore range. |
| NL3 Nylon Sleeve / OD 65 mm / 25 Teeth | A replacement sleeve with the stated tooth count. |
| NL3 Nylon Sleeve / OD 65 mm / 34 Teeth | A different sleeve option despite the same series and outside diameter. |
Can I order a sleeve by outside diameter only?
No. Match tooth count, tooth geometry and the existing hub dimensions. For a complete coupling, specify both finished bores and keyway requirements.
Related selection references
Compare the drawings and intended function; these references are not a statement of direct interchangeability.
Ordering notes
- Select a complete coupling or replacement sleeve and verify the outside diameter, bore range and tooth count shown in the option name.
- For complete couplings, state the required finished bore and any keyway requirements in the order notes.
- Confirm shaft fit, torque, speed, alignment and operating conditions before ordering.
All listed dimensions are in millimetres. Verify the selected model against the actual equipment before installation.
