Motorcycle Steering Stem Bearing Cup Puller Set 12# 30-60mm - Triple Expanding Jaw Tool with Slide Hammer for Tapered Roller Bearing Race Removal - Heavy-Duty Chromoly Claw (for 2-Wheeler Repair)

Product Name: Motorcycle Steering Stem Bearing Cup Puller Set 12# (Includes Slide Hammer)
Model: 12# (0107)
Application: Specifically designed for removing the upper and lower tapered roller bearing outer races (commonly known as "bearing cups" or "steel cups") from the steering head tube of two-wheel motorcycles.

Key Features & Advantages:

1. Powerful Extraction, Solves Stubborn Cases:

   • Expanding Triple-Jaw Design: Three adjustable jaws securely adapt to a wide range of inner diameters from 30mm to 60mm.

   • Wedge-Shaped Hook Tips: Require a minimal clearance of just 2mm or more above the cup to grip effectively. Perfect for removing cups recessed into blind counterbores or shelves where standard tools fail.

   • Triangular Bracing Structure: Grips the cup's inner wall firmly, preventing slippage during high-force extraction. Ensures safer, more stable, and controlled removal.

2. Military-Grade Materials, Extreme Durability:

   • Jaw Material: Made from 42Cr-Mo Chromium Molybdenum Alloy Steel, professionally heat-treated to a hardness of HRC 48-50. Offers an optimal balance of high strength and toughness, resisting wear, breakage, and deformation.

   • Frame Material: Constructed from 40Cr Alloy Steel with a black oxide finish for corrosion resistance and durability.

   • Slide Hammer Material: Forged from 45# Carbon Steel with a chrome-plated surface for smooth operation, high impact resistance, and long service life.

3. Professional Complete Kit, Efficient & Effortless:

   • Includes a dedicated slide hammer (pull hammer) that threads directly onto the puller body – ready to use right out of the box, no additional tools needed.

   • Utilizes a standardized "Wrench Tightening + Slide Hammer Impact" operation for highly efficient disassembly, minimizing potential damage to motorcycle components.

Specifications:

• Applicable Bore Diameter: Bearing Cup Inner Diameter Φ30 - 60mm

• Connection Thread: Imperial 1/2-12 UNC (Must use the provided slide hammer. Do not mix with incompatible hammers).

• Product Weight: Approximately 3kg (Full Set)

• Product Dimensions: Total Length ~355mm, Total Width ~80mm, Total Height ~146mm

Package Includes:

• 1 x 12# Bearing Cup Puller Body

• 1 x Dedicated Slide Hammer

Typical Use Cases (Illustrative Scenarios):

• Scenario 1: Removing a bearing cup that is flush with the head tube surface, offering no protruding lip.

• Scenario 2: Extracting a bearing cup seated deep within a blind counterbore or shelf, where conventional tools cannot gain access.
  (Image reference: Ideal for situations like the "steering bearing cup recessed in a blind bottom shelf" shown in your diagram).

Important Notes (Please Read Before Use):

• Specialized Tool: This tool is specifically engineered for removing steering stem bearing outer races on two-wheel motorcycles. It is NOT intended for use on car transmissions, compressors, or other machinery.

• Limitations: In rare cases where the clearance above the cup is less than 2mm (e.g., due to prior repair damage or specific bike models like the mentioned Jihe AE5), effective gripping might not be possible. Forcing the tool risks damaging the hook tips. Please consult customer service before purchasing if unsure about your specific application.

• Thread Compatibility: The puller's connection thread is Imperial 1/2-12 UNC. Do not force it onto metric or other non-matching slide hammers, as this will damage the threads.

• Proper Operation: This is a slide hammer-type puller. Always first tighten the central screw with a wrench to securely engage the jaws against the cup. Only then attach the slide hammer for impact removal. NEVER use an impact wrench (air gun) directly on the central screw, as this will severely damage the tool.