Product Parameters
| Item | Specification |
|---|---|
| Type | Sleeve, Flange, Split-Collar |
| Material | Steel, Stainless Steel, Aluminum |
| Torque Capacity | Up to 10,000 Nm |
| Angular Misalignment | 0° (rigid) |
| MOQ | 10 pcs |
description
Rigid shaft couplings make no allowance for misalignment - they transmit torque between shafts that must be precisely aligned. The rigid coupling is the right choice when shafts are already aligned accurately and you want the simplest, most rigid connection possible. Where flexible couplings add compliance that absorbs misalignment, rigid couplings add nothing - which means any misalignment becomes shaft stress. Steel rigid couplings are the standard for most industrial applications - high torque capacity, good strength, cost-effective. Stainless steel handles corrosive environments. Aluminum is used when weight matters and torque is moderate. Sleeve couplings slide over the shaft ends and are set-screwred or keywed. Flange couplings bolt to face features. Split-collar couplings clamp around both shafts without removing the shaft from the assembly.
When Rigid Is the Wrong Choice
If your driver and driven shafts are not precisely aligned - within 0.05 mm for most rigid couplings - the coupling will transmit the misalignment to the bearings as load. This accelerates bearing failure dramatically. If you are not certain your shafts are well-aligned, use a flexible coupling instead.
FAQ
Q1: MOQ?
A1: 10 pieces.
Q2: Types?
A2: Sleeve, flange, and split-collar rigid couplings.
Q3: Torque capacity?
A3: Up to 10,000 Nm depending on size and material.
Q4: Materials?
A4: Steel (standard), stainless steel, aluminum.
Q5: Custom configurations?
A5: Yes. Custom bore sizes, flange configurations, and mounting features.
Q6: Alignment requirements?
A6: Precise alignment required - within 0.05 mm for most rigid coupling applications.
Quality is non-negotiable in precision manufacturing. Every component undergoes rigorous inspection at each stage of production.
- ISO 9001:2015 - Quality management system covering design and manufacturing
- API 6D / API 600 - Design and testing compliance for valve components and flanges
- Hydrostatic Pressure Testing - Every valve body pressure-tested to 1.5× rated pressure
- MPI / LPI - Magnetic particle and liquid penetrant inspection for weld integrity
- CE / ATEX - Pressure equipment directive compliance for EU market available
- Passivation / Electropolishing - ASTM A967 procedures for corrosion resistance
- Material Traceability - Heat number tracking from raw material to finished part
From raw material to finished product, every step is controlled and documented:
- Material Selection - Ground bar or forged blank with material certification
- Rough Machining - CNC turning to steps, grooves, and features
- Splining / Keyway Cutting - Hobbing or broaching for transmission features
- Heat Treatment - Induction hardening, case-hardening, or through-hardening
- Finish Grinding - Centerless or between-centers grinding for final diameter/tolerance
- Polishing / Superfinishing - Ra 0.2–0.8 μm surface finish for bearing surfaces
- Inspection & Packaging - CMM check, surface roughness report, rust prevention packaging
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