TOKYO KEIKI CR-04-4P4-30-JA-J The High-Capacity Solution for Demanding Construction Agriculture and Industrial Machinery

Product Overview: TOKYO KEIKI High-Torque Hydraulic Motor Model CR-04-4P4-30-JA-J | A Procurement Specialist's Guide

Meta Description: Technical deep-dive into the TOKYO KEIKI CR-04-4P4-30-JA-J hydraulic motor. Discover its high 45 cm³/rev displacement, robust JA construction, and applications in demanding construction, agriculture, and industrial machinery.

Executive Summary: Sourcing High-Torque Hydraulic Solutions

For procurement professionals engaged in the specification of hydraulic components for heavy-duty applications, the availability of high-torque, compact, and reliable motors is a critical concern. This document provides a detailed technical analysis of the TOKYO KEIKI Hydraulic Motor, model CR-04-4P4-30-JA-J. This motor represents the high-capacity segment of the renowned CR-Series gerotor lineup, engineered to deliver exceptional rotational force from a compact frame. Designed for machinery where high starting torque and smooth low-speed operation under extreme load are paramount, this model is a prime candidate for your most demanding equipment. This guide will decode its model nomenclature, present exhaustive technical data, and clarify the specific operational advantages it offers to OEMs and end-users.

Deciphering the Model: A Closer Look at CR-04-4P4-30-JA-J

Understanding the manufacturer's coding system is essential for accurate sourcing and to avoid compatibility issues. The model number CR-04-4P4-30-JA-J provides a complete profile of the motor's core characteristics:

• CR: The series identifier for TOKYO KEIKI's Gerotor (Orbit) type hydraulic motors, celebrated for their high torque density and smooth performance.

• 04: The frame size, confirming the motor's physical dimensions and mounting footprint. This allows for direct comparison with other motors in the same frame size family.

• 4P4: This is the key differentiator for this model. It specifies the displacement. In the TOKYO KEIKI coding system, this corresponds to a substantial 45 cm³/rev (cubic centimeters per revolution). This high displacement is the primary source of its powerful torque output.

• 30: Denotes the flange and shaft configuration, indicating a standardized SAE 2-bolt mounting flange and a keyed output shaft.

• JA: Signifies the keyed internal assembly. This is a critical robustness feature where the internal gerotor element is positively keyed to the shaft, preventing slippage under severe shock loads and ensuring maximum service life.

• J: Designates the port thread standard as JIS (Japanese Industrial Standards) taper threads, which is essential for procuring the correct hydraulic adapters and ensuring a leak-free connection.

This breakdown immediately signals that the CR-04-4P4-30-JA-J is a high-torque variant within the compact CR-04 frame size.

Comprehensive Technical Specifications Table

The table below consolidates the critical engineering and performance parameters for the CR-04-4P4-30-JA-J, providing a reliable reference for system design and compatibility verification.

Distinctive Features and Procurement Advantages

The CR-04-4P4-30-JA-J is engineered to address specific challenges in high-load applications. Its features translate directly into tangible benefits for the machinery it powers.

1. Substantial Torque Output in a Compact Frame: With a displacement of 45 cm³/rev, this motor generates over twice the theoretical torque of a 20 cm³/rev model (like the CR-04-2P0). This high power density allows OEMs to deliver significant rotational force without resorting to a larger, heavier, and more expensive frame size, optimizing the machine's power-to-weight ratio.

2. Exceptional Durability for Demanding Environments: The JA designation, indicating a keyed gerotor and shaft, is non-negotiable for a motor of this torque capacity. This design ensures that the high torque is transmitted through a positive mechanical lock, eliminating the risk of internal slippage that can destroy a standard splined or friction-fit assembly under shock loads. This results in superior reliability and reduced total cost of ownership.

3. True Low-Speed, High-Torque (LSHT) Performance: The gerotor principle is inherently suited for LSHT applications. The CR-04-4P4-30-JA-J provides exceptionally smooth and powerful rotation from startup and can maintain precise control at speeds below 1 RPM. This makes it ideal for applications requiring high force with precise movement, such as winching or heavy-duty positioning.

4. Robust Construction for High-Pressure Systems: Rated for continuous operation at 210 bar, this motor is built with the structural integrity to handle the demands of modern, high-pressure hydraulic systems. This ensures consistent performance and longevity, even in the most strenuous operating cycles.

5. Standardized Interfaces for Simplified Integration: The use of common SAE flanges and JIS ports ensures that this high-performance motor can be integrated into existing machine designs with minimal engineering effort. This standardization streamlines the procurement of couplings, mountings, and hoses.

Target Applications and Industry Use Cases

Procurement specialists will encounter demand for this specific motor in industries and applications where high torque is the primary requirement. Key sectors include:

• Heavy-Duty Construction Equipment: Track drives for compact excavators and high-flow skid-steer loaders, swing drives, and auger drives for large-diameter drilling.

• Agricultural Machinery: Main drive wheels for small tractors and trailers, high-capacity mixer and grinder drives, and powerful conveyor systems in forage harvesters.

• Material Handling: Heavy-duty winches and capstans, drive systems for larger capacity pallet trucks, and rotation mechanisms for industrial manipulators.

• Forestry and Recycling: Feed roller drives in powerful woodchippers, and compactor drives in recycling balers.

Conclusion: The High-Torque Benchmark for Compact Hydraulic Drives

The TOKYO KEIKI Hydraulic Motor model CR-04-4P4-30-JA-J stands as a definitive solution for applications requiring maximum torque from a compact package. Its high-displacement design, coupled with the uncompromising robustness of the JA internal construction, makes it a strategically sound and low-risk component for procurement. By specifying this model, you are enabling the development of equipment that demands high power, reliability, and durability. For further technical assistance, including performance curves under various operating conditions and 3D CAD models for integration, please contact our engineering support team to facilitate your procurement process.