SP-21 ROTOR INGCO (JS57028)-N-35

The INGCO N-35 Rotor (SP-21) is a genuine replacement armature rotor designed for the INGCO JS57028 800W Electric Jig Saw, a versatile corded tool ideal for precise straight and curved cuts in wood, metal, and plastic up to 100 mm depth. This rotor is the core rotating component of the motor assembly, converting electrical energy into mechanical rotation to drive the blade's reciprocating action. Crafted from high-grade copper windings and laminated steel for optimal conductivity and magnetic efficiency, it restores full power output (up to 3,000 strokes/min) and variable speed control when the original wears due to prolonged use, heat, or debris buildup. As part of INGCO's comprehensive spare parts lineup, it's essential for DIY repairs, ensuring the jig saw's longevity without needing a full motor replacement.

Key Features:

• Precision Engineering: Armature with balanced commutator and high-temperature enameled copper windings for smooth rotation, minimal sparking, and resistance to overloads up to 800W.
• Compatibility: Direct OEM fit for JS57028 model; includes shaft and bearing mounts for seamless integration—verify via exploded parts diagram on INGCO's service portal.
• Durability: Heat-treated steel core withstands speeds up to 3,000 SPM; epoxy-coated for insulation against moisture and dust in workshop environments.
• Performance Restoration: Eliminates symptoms like reduced stroke rate, overheating, or intermittent power; maintains 0-3,000 SPM variable control and orbital action.
• Ease of Installation: Requires basic disassembly (remove housing screws, brush cover, and old rotor); 20-30 minute DIY job with a screwdriver set—recommended to replace carbon brushes simultaneously for full tune-up.

Ideal For:

Homeowners, woodworkers, or light professionals maintaining the JS57028 for tasks like cabinetry, laminates, or metal profiling. Replace after 100-200 hours of use or at signs of motor lag—not compatible with other INGCO jig saws like JS8008 without confirmation. Users report it revives "sluggish" saws effectively, with praise for INGCO's affordable, reliable spares matching tool quality.

Specifications: