SJ-2B4602TK (Mitsubishi Electric)

SJ-2B4602TK is a Mitsubishi Electric SJ-B series built-in AC spindle motor, used in medium-to-heavy duty CNC machining centers. It belongs to the SJ-2B 4600-series, designed for higher power, higher torque stability, and industrial heavy machining applications.

It is closely related to SJ-2B4503TK, but with a higher power class and different coil/speed configuration.

🔧 Verified specifications (official Mitsubishi data)

From Mitsubishi SJ-B series specification manual:
(Mitsubishi Electric SJ-B Spindle Motor Specification Table)

🔧 Model code breakdown

So:

SJ-2B4602TK = 18.5 kW built-in spindle motor for medium-heavy CNC machining

⚙️ What makes SJ-2B4602TK important

Compared with nearby models:

• Higher power than 4500-series (7.5–15 kW class)
• Stronger torque for heavy cutting
• Designed for stable industrial operation under load

Key characteristics:

• 🧱 high cutting force capability
• ⚖️ stable low-to-mid speed torque
• 🎯 suitable for continuous machining
• 🔧 robust spindle structure for production use

🏭 Typical applications

SJ-2B4602TK is used in:

• vertical machining centers (VMCs)
• heavy milling operations
• steel and cast iron cutting
• boring and drilling
• industrial CNC production machines

It is chosen when machines need:

• ⚡ higher spindle power (~18.5 kW class)
• 🧱 strong rigidity under load
• 🎯 stable heavy-duty cutting
• 🔧 reliable continuous operation

⚖️ Position in Mitsubishi spindle lineup

🧠 Simple explanation

SJ-2B4602TK is an 18.5 kW built-in CNC spindle motor designed for medium-heavy machining, offering strong torque and stable performance for industrial cutting operations up to 10,000 rpm.