WR3605H Long Handle Hook Spanner Wrench, Round Head (φ4.5mm), 350mm Length, 50CrV Head, Matte Chrome
This long handle hook spanner wrench features a round head with a 4.5mm diameter pin (5mm length) for engaging pin-style lock rings. The overall length is 350mm when fully extended, providing extended leverage. Forged 50CrV head (42±2 HRC) with 45# carbon steel handle, matte chrome plated. Designed for high-torque applications on large-diameter bearing locknuts and retaining rings.
Specifications
Product Description
Extended 350mm Length for High Torque: The long handle provides significantly greater leverage compared to standard hook spanners (typically 160mm). This allows maintenance technicians to achieve higher tightening torque or break loose stubborn lock rings on large bearings, spindles, and heavy machinery components without needing additional cheater bars.
Precision Round Pin for Lock Ring Holes: The 4.5mm diameter pin (5mm projection) is designed to fit into the small round holes of slotted bearing locknuts and retaining rings. The pin geometry ensures positive engagement, reducing the risk of slipping when applying high rotational force – critical when adjusting bearing preload on industrial gearboxes or milling spindles.
Dual-Material Construction with Hardened Head: The head is forged from 50CrV alloy steel and heat-treated to 42±2 HRC for wear resistance at the pin contact point. The handle is made from 45# carbon steel, providing strength while maintaining overall ductility to absorb shock loads without fracturing.
Matte Chrome Finish for Corrosion Protection: The entire tool receives a matte chrome plating over a sandblasted base, offering a non-reflective, durable surface that resists rust in workshop environments. This finish also allows easy cleaning after contact with greasy lock rings.
Heavy-Duty for Large Machinery Maintenance: At 570g, this wrench is built for demanding tasks such as adjusting spindle bearings on milling machines, tensioning lock rings on large conveyor rollers, or servicing locknuts on heavy earth-moving equipment. The extended reach also allows access to recessed lock rings located deep inside machine housings where shorter wrenches cannot reach.
