The 22-W base holder functions as the intermediate mounting interface between the milling drum shell and the quick-change cutting tool holder. Each unit features a precision-machined bore and locating surfaces that position the tool holder at the correct angle and projection height. The left (2198013) and right (2198014) units are mirror-image components, installed on opposite sides of the milling drum to accommodate the directional arrangement of cutting picks. This paired configuration ensures uniform tool spacing across the full drum width, which contributes to consistent milling pattern and surface finish on the road.
The base holder is subjected to continuous impact loads transmitted from the cutting picks as they engage asphalt and concrete surfaces. Its structural design distributes these loads across the mounting interface, reducing concentrated stress on the drum shell. The locating bore is sized to accept the 22-W series quick-change tool holder shank, providing a secure fit that prevents tool rotation or displacement during operation.
The 22-W base holder is forged from alloy structural steel and undergoes quenching and tempering (QT) heat treatment to achieve a balanced hardness and toughness profile. The body hardness typically falls within the range suitable for impact-bearing components, while the mounting bore may receive additional surface hardening to resist wear from repeated tool holder insertion and removal. The forging process aligns the material grain flow with the load direction, improving fatigue resistance compared to cast alternatives.
All critical dimensions, including the bore diameter, locating face flatness, and mounting hole positions, are machined to tolerances that match the original equipment specification. This ensures that the tool holder seats fully and that the cutting pick projection height remains within the designed range after replacement.
The 22-W base holder is designed for use on road cold milling machines equipped with the 22-W quick-change tool holder system. This system is commonly found on mid-size and large milling machines used for asphalt pavement removal, surface texturing, and concrete milling operations. The left and right base holders (2198013 and 2198014) are typically installed at the outboard positions of the milling drum, where they support the tool holders nearest the drum edges.
Business buyers should verify the part number stamped on the existing base holder before ordering, as left and right units are not interchangeable. The model designation 22-W refers to the tool holder system specification, and compatibility should be confirmed against the machine manufacturer's drum assembly drawing.
Replacement of the 22-W base holder is typically performed during scheduled milling drum overhaul or when the mounting bore shows excessive wear from repeated tool holder changes. The installation process involves removing the worn unit from the drum shell, cleaning the mounting surface, and fitting the new base holder to the specified torque. Weld-mounted units require qualified welding procedures to ensure proper fusion and avoid distortion of the drum shell.
After installation, the tool holder should be inserted to confirm a full seat and correct alignment. The cutting pick projection height should be measured and adjusted if necessary to maintain the designed milling depth. Commercial users are advised to replace left and right base holders in pairs when wear is detected on either unit, to maintain symmetrical tool positioning across the drum.
Item | Details |
|---|---|
Part Number | 2198013 (Left), 2198014 (Right) |
Model | 22-W |
Product Name | Milling Drum Base Holder |
Application | Road Construction Milling Machine |
Material | High Strength Steel |
Condition | New |
Function | Milling Drum Supporting & Fixing |
Quality | OEM Standard |
Feature | High Rigidity, Wear Resistant |
Warranty | 6 Months |
Delivery Time | 7–15 working days |
Payment Terms | TT, LC, Western Union |
Shipment Port | Shanghai, China |
Each 22-W base holder undergoes dimensional inspection of critical features, including bore diameter, locating face flatness, and mounting hole positions, before shipment. The heat treatment process is monitored to ensure consistent hardness across production batches. Visual inspection checks for surface defects such as cracks, porosity, and incomplete forging fill. Enterprise customers may request inspection reports or sample verification for bulk orders.
Standard delivery time is 7–15 working days from order confirmation, depending on order quantity and current production schedule. The product carries a 6-month warranty from the date of delivery, covering manufacturing defects in material and workmanship under normal operating conditions. Warranty claims require inspection of the returned component to determine the cause of failure. Shipment is arranged from Shanghai Port, China, and freight terms can be negotiated according to the buyer's preference.
No. The 2198013 (left) and 2198014 (right) are mirror-image components with opposite mounting orientations. They cannot be swapped. Always verify the part number and mounting side before installation.
The 22-W base holder is compatible with road cold milling machines equipped with the 22-W quick-change tool holder system. Buyers should confirm compatibility against the machine manufacturer's drum assembly drawing, as tool holder systems vary by machine model and production year.
The minimum order quantity is one pair (one left 2198013 and one right 2198014). Bulk pricing is available for larger quantities, and industrial clients can contact the sales team for a quotation based on their required volume.
Replace the base holder when the mounting bore shows visible wear, when the tool holder does not seat fully or rotates in the bore, or during scheduled drum overhaul. Excessive wear can lead to incorrect cutting tool alignment and reduced milling performance. Inspect the bore diameter and compare it to the specification if wear is suspected.
