Product Video
Products Description
|
Brand |
Product Name |
Model |
Part Number |
|
HItachi |
Bucket Tooth | EX1900 | 75SV2RXL |
Product Details
|
Product Name |
Bucket Tooth |
|
Part Number |
75SV2RXL |
|
Origin |
Japan |
|
Brand Name |
CAT |
|
Model |
EX1900 |
|
Price |
Negotiable |
|
Packing Details |
Standard Export Packing |
|
Delivery Time |
0-30 Days |
|
Payment Term |
L/C, T/T |
|
Price Term |
FOB, CIF, CFR |
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Supply Capacity |
50,000 PCS/Month |
|
Minimum Order Quantity |
1 PC |
|
Material |
High Quality Steel |
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Technology |
Precision Machining |
|
Quality |
Original Factory Standard |
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After-Sales Service |
Full Support, Online Service |
|
Color |
Customizable |
|
Application |
Excavator |
|
Customizable |
including customized materials, surface treatment and specifications |
Product Features
Technical Specifications
Tooth System: 76.2
Profile Type: 139.7
Material: 375.9
Hardness：HB 470-520
Tensile Strength：≥ 1450 MPa (Rm-N/mm²)
Yield Strength：≥ 1100 MPa (Re-N/mm²)
Impact Toughness：≥ 15J (at 25°C)
Weight Class：120 - 200 t
Compatible Models：Hitachi EX1900
Long Tip Penetration Geometry for Reduced Digging Resistance
The 75SV2RXL uses the ESCO Super V long tip (RXL) profile. This geometry concentrates the digging force on a smaller contact point, allowing the tooth to penetrate hard rock and compacted overburden with lower hydraulic pressure. Less resistance at the cutting edge translates to faster bucket filling and reduced load on the stick and boom cylinders.
HB470-520 Hardness to Resist Abrasive Wear
The tooth surface is cast from high-alloy steel and heat-treated to a Brinell hardness of HB470-520. This hardness level resists the abrasive action of quartz, granite, and iron ore fragments sliding across the tooth surface during the digging cycle. The hard surface maintains the original tip profile for longer, delaying the need to replace the tooth.
Impact Toughness of ≥15J to Prevent Root Cracking
While the surface is hard, the tooth body retains an impact toughness of at least 15J at 25°C. This toughness prevents the tooth from fracturing when it strikes unbreakable objects such as steel plates or large embedded boulders. The balance between a hard surface and a tough core prevents sudden tooth loss in high-impact mining conditions.
Alloy Steel Casting and Heat Treatment Process
The Bucket Tooth 75SV2RXL is produced through precision casting, followed by a controlled heat treatment cycle. This process ensures that the hardness transition from the surface to the core is gradual rather than abrupt. The gradual transition avoids internal stress concentrations that could lead to premature failure at the mounting pin area.
Application Value
Reduces Total Replacement Frequency in Abrasive Conditions
Because the 75SV2RXL maintains its original profile under high abrasion, it reaches the wear limit much later than standard teeth. In practice, this means fewer on-site replacements per thousand working hours. The direct benefit is less labor spent on swapping teeth and fewer unplanned interruptions during high-demand loading cycles, keeping the machine focused on moving material rather than waiting for maintenance.
Maximizes Bucket Fill Factor per Digging Cycle
The long tip profile maintains a sharp, narrow cutting edge throughout its service life. This allows the bucket to penetrate hard material quickly without requiring excessive breakout force. As a result, each digging cycle can achieve a fuller bucket load in less time. Higher fill factors per cycle directly increase the overall material moved per hour, improving fleet productivity.
Protects the Bucket Lip and Adapter from Deformation
A worn or loose tooth transfers severe vibration and impact directly to the adapter and bucket lip. The precise fit and stable geometry of the Bucket Tooth 75SV2RXL ensure proper load distribution across the mounting interface. By minimizing play at the connection point, it prevents premature wear of the adapter and deformation of the bucket lip, avoiding costly structural repairs to the bucket assembly.
Maintenance Recommendations
Wear Limit Measurement of the 75SV2RXL Tooth Tip
Measure the wear depth of the tooth tip every 500 working hours. If the original tip length is reduced by more than 30%, or if the wear flat on the tip exceeds 15 mm, the tooth has reached its replacement limit. Continuing to operate beyond this point transfers excess digging force to the adapter and bucket lip, causing deformation and expensive structural repairs.
Inspection of Locking Pin and Retainer for Looseness
The tooth is secured by a locking pin and retainer. During every shift change, visually inspect the retainer for deformation or loss of elasticity. A loose tooth creates clearance at the mounting point. This clearance allows the tooth to move under impact, generating repeated shock loads on the pin bore and the adapter nose, which accelerates wear and can lead to sudden tooth loss during operation.
Avoid Tip Fracture from Extreme Prying Forces
The Bucket Tooth 75SV2RXL casting provides an impact toughness of at least 15J to withstand normal digging impacts. However, using the tooth tip as a lever to pry out embedded boulders or blast roots creates extreme bending stress. Always break the material using bucket curl force rather than side prying. This prevents root cracking and preserves the structural integrity of the alloy steel casting.
Proper Seating and Cleaning During Tooth Replacement
When replacing the 75SV2RXL, thoroughly clean the adapter nose and the tooth socket. Remove compacted dirt, rust, or metal burrs. Apply a thin layer of anti-seize compound to the mating surfaces. Push the new tooth onto the adapter by hand to ensure it seats completely before inserting a brand-new locking pin. Any gap between the tooth and adapter will result in premature failure of the new tooth.
STONE
Stone is a leading supplier of engineering machinery parts, focusing on providing high-quality parts for mining companies. Since its establishment in 2004, we have been based in Shanghai, China, and have built our own brand STONE, becoming a trusted choice in the industry. We are committed to providing a variety of parts including bulldozers, excavators and wheel loaders for well-known brands such as Caterpillar and Komatsu. Our product line covers a full range of OEM parts, such as Track Chain, Track Rollers, Sprocket, Excavator Buckets, Blades, Excavator Cylinders, Swing Circles, and various electrical and hydraulic components to ensure that our customers' stringent requirements for quality and performance are met.
quality
years experience
service
hours warrant
Q＆A
What is the adapter nose dimension for the 75SV2RXL tooth, and how does it affect fit?
The 75SV2RXL fits the ESCO SV2 adapter nose with a specified nose width of 130 mm and a nose height of 175 mm. If the adapter nose is worn beyond 3 mm from these dimensions, the new tooth will not seat properly. A loose fit allows the tooth to rock under load, which accelerates wear on both the tooth socket and the adapter nose. Always measure the adapter nose before installing a new tooth. If the nose is worn, build it up by welding or replace the adapter before fitting the new tooth.
What is the correct locking pin insertion direction for the 75SV2RXL?
The locking pin must be inserted from the inboard side of the tooth and driven toward the outboard side. The retainer is installed on the outboard end. This direction ensures that during digging, the material flow pushes against the retainer rather than the pin head. If the pin is inserted in the reverse direction, the material flow can catch the pin head and push it out, causing sudden tooth loss. Always confirm the pin direction before driving it in.
How much does the 75SV2RXL weigh, and what does that mean for manual replacement?
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