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9135325: This is a part number for a Hitachi hydraulic cylinder assembly. Without additional context, it's difficult to determine the exact specifications of this part.
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9135612: This is a part number for a Hitachi hydraulic pump, specifically a piston pump. Again, without additional context, it's difficult to determine the exact specifications of this part.
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EX300-3, EX300-3C, and EX310H-3C: These are model numbers for Hitachi hydraulic excavators. The EX300-3 and EX300-3C are both part of the EX-3 series of excavators and have operating weights of approximately 31,500 to 33,500 kg (69,500 to 73,800 lbs). The EX310H-3C is a hybrid excavator that combines a diesel engine with an electric motor. It has an operating weight of approximately 31,700 kg (69,900 lbs).
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HMGF49A: This is a model number for a Hitachi vibratory pile driver. The HMGF49A is designed for driving steel sheet piles and H-beams, and it has a maximum driving force of 4,940 kN (110,800 lbs). It can be mounted on a variety of excavators, including the Hitachi EX-3 series.
Overall, these specifications are related to Hitachi construction equipment and genuine Hitachi parts.