Product Description
Toyota retaining ring (part number 00591-42379-81) for electric lift truck applications. This external snap-style spring steel retaining ring provides durable axial retention in shaft grooves with a phosphate and oil finish for corrosion protection. Engineered for precise fitment on Toyota electric pallet jacks, lift trucks, and material handling equipment requiring reliable shaft component retention.
Specifications
Material & Construction
| Material | Spring steel |
| Hardness | Approx. Rockwell C45–C50 |
| Finish/Coating | Phosphate and oil finish |
Design & Function
| Style | External snap style |
| Retention Type | Axial retention in shaft groove |
Application & Fitment
| Application | Electric lift truck applications |
| Fitment | Engineered for Toyota equipment with precise shaft and groove fitment |
| Part Number | 00591-42379-81 |
Frequently Asked Questions
Q: What is the material and hardness specification for the TO 00591-42379-81 retaining ring?
A: The TO 00591-42379-81 is manufactured from spring steel with a phosphate and oil finish. It meets a hardness specification of approximately Rockwell C45 to C50, which provides the spring tension required for reliable axial retention in shaft grooves on Toyota electric lift truck applications.
Q: Will the TO 00591-42379-81 retaining ring fit Toyota electric lift trucks?
A: Yes, the TO 00591-42379-81 is an OEM part engineered specifically for Toyota electric lift trucks. It is an external snap-style retaining ring designed for precise fitment in shaft grooves. Verify your equipment model and shaft dimensions match the groove specifications before ordering.
Q: What does axial retention mean for this retaining ring?
A: Axial retention means the ring holds components in place along the axis of the shaft, preventing side-to-side movement. The TO 00591-42379-81 sits in a shaft groove and uses spring tension to maintain this position under load.
Q: Does the phosphate and oil finish on the TO 00591-42379-81 require maintenance?
A: The phosphate and oil finish is applied during manufacturing to protect against corrosion. In normal operating conditions, this finish requires no additional maintenance. Inspect periodically for signs of wear or loss of spring tension, which would indicate replacement is necessary.
Q: How do I know if the TO 00591-42379-81 retaining ring needs replacement?
A: Replace the retaining ring if you observe axial movement or play in the shaft, visible deformation, loss of spring tension, or corrosion that compromises the surface finish. These are signs the ring can no longer maintain proper retention.