Product Description
The Yale YL 504805706 spring is an OEM component designed for electric lift truck models including ERC030 and ERP050 series. Manufactured from SAE 1070 high carbon steel and oil tempered, it features a 1.12-inch outer diameter, 2.87-inch free length, 0.125-inch wire diameter, and supports a maximum working load of 50 lbs. Cross-references include Hyster 504805706 and prior Yale versions 504805706-00, with tight manufacturing tolerances per ANSI/ASME B18.21.1.
Specifications
Material & Construction
| Spring Material | SAE 1070 high carbon steel |
| Hardness | Rockwell C43-48 |
Mechanical Specifications
| Number of Coils | 20 |
Part Numbers & Compatibility
| Manufacturer Part Number | YL 504805706 |
| OEM Part Number | 504805706 |
| Cross-Reference Part Numbers | Replaces Yale 504805706-00, supersedes 504805706-01, equivalent to Hyster 504805706 |
| Compatible Equipment Models | Fits Yale electric lift truck series ERC030, ERP040, ERP050 |
Frequently Asked Questions
Q: What are the specifications for the YL 504805706 spring?
A: The YL 504805706 is manufactured from SAE 1070 high carbon steel and oil tempered. It features a 1.12-inch outer diameter, 2.87-inch free length, 0.125-inch wire diameter, and supports a maximum working load of 50 pounds. Manufacturing tolerances conform to ANSI/ASME B18.21.1 standards.
Q: Which Yale electric lift truck models use the YL 504805706 spring?
A: The YL 504805706 spring fits Yale electric lift truck series ERC030, ERP040, and ERP050. Cross-references include Hyster 504805706 and prior Yale versions 504805706-00. Verify your equipment model and serial range to confirm compatibility.
Q: What does SAE 1070 high carbon steel and oil tempering provide?
A: SAE 1070 high carbon steel with oil tempering provides superior strength, elasticity, and durability for spring applications. The oil tempering process reduces brittleness and improves resistance to fatigue stress, allowing the spring to withstand repeated compression and extension cycles over its operational life.
Q: How do I confirm that the YL 504805706 is the correct replacement?
A: Verify the outer diameter is 1.12 inches, free length is 2.87 inches, and wire diameter is 0.125 inches. Cross-reference your equipment part number with 504805706-00 or 504805706-01 designations. The 50-pound working load must match your original spring specification.
Q: What is the lifespan of the YL 504805706 spring?
A: The lifespan of oil-tempered SAE 1070 springs typically ranges from 5-10 years depending on load frequency and environmental conditions. Springs exposed to corrosive environments, temperature extremes, or continuous high-load cycling may degrade faster. Replace when springs lose tension, show visible cracks, or fail to return to proper free length.