Water Glass Casting Motor Spindle

Key Specifications

• Material: low-alloy carbon steel (AISI 4140/4340), stainless 304/316L on request
• Weight range: 0.8 kg – 120 kg per spindle
• Casting process: water glass investment casting for near-net shape and superior surface finish (Ra 3.2–6.3 µm)
• Machining allowances: ≤ 0.5 mm per side, 5-axis CNC turning & milling to ±0.01 mm tolerance
• Hardness: 28–34 HRC after quench & temper; optional induction hardening to 50 HRC on journals
• Dynamic balancing: G2.5 grade at 12 000 rpm, verified on Schenck horizontal balancing machines
• Threads, keyways and bearing seats are 100 % gauged; run-out ≤ 0.02 mm TIR

Quality & Certifications

We run a fully integrated quality system certified to ISO 9001 and IATF 16949. Every Water Glass Casting Motor Spindle undergoes:

• Spectro-chemical analysis before pouring
• X-ray or UT on critical sections
• 3D CMM final inspection with PC-DMIS reporting
• Optional PPAP Level 3 documentation for automotive clients

Typical Applications

• High-speed servo motors (up to 15 kW)
• CNC machining center direct-drive units
• Wind-turbine pitch actuators
• Hydraulic motor power take-off shafts

Advantages of Water Glass Casting

Compared to silica-sol investment casting, the water glass process offers 15–20 % lower cost while retaining ±0.25 mm dimensional accuracy. This makes our Water Glass Casting Motor Spindle ideal for medium-to-large volumes where precision and economy must coexist.

Secondary Operations & Coating

Besides finish machining, we provide:

• Deep-hole drilling for coolant passages
• Induction hardening and nitriding
• Zinc, nickel or black oxide plating
• Laser marking for traceability

Packaging & Lead Time

Spindles are oiled, sleeved in VCI film and packed in custom foam inserts within export-grade plywood crates. Standard lead time is 4–5 weeks after drawing approval; rush deliveries available in 15 days.

Contact Us Today

Send your drawing or sample and receive a detailed DFM report within 48 hours. Let our Water Glass Casting Motor Spindle solutions power your next motor platform.

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