1804N172
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| Part Number | BIAENBHC |
| Spring Type | Die |
| Length | 51 mm |
| Compressed Length @ Maximum Load | 35.7 mm |
| Deflection @ Maximum Load | 30% |
| Load Max. | 143 lbs. |
| Spring Rate | 9.3 lbf/in |
| Color | Blue |
| Material | Chrome-Silicon Steel |
| End Type | Closed and Ground |
| Specifications Met | ISO 10243 |
| For Hole Diameter | 20 mm |
| For Shaft Diameter | 10 mm |
| Wire Width | 3.96 mm |
| Wire Thickness | 2.36 mm |
| Load Rating | Medium |
| RoHS | RoHS 3 (2015/863/EU) Compliant |
| REACH | REACH (EC 1907/2006) (01/23/2024, 240 SVHC) Compliant |
| DFARS | Specialty Metals COTS-Exempt |
| Country of Origin | China |
| USMCA Qualifying | No |
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All other trademarks mentioned herein are used for the purpose of compatibility description and product identification only. Lily Bearing is not affiliated with, endorsed by, or sponsored by the holders of these trademarks.
Design Features of BIAENBHC Spring
BIAENBHC are designed to operate under compression, storing energy when compressed and returning to their original length when the load is released. Built to metric dimensional standards — including ISO 10243 and JIS B 5012 — these springs feature rectangular wire cross-sections that maximize the active coil material, delivering higher load capacity within a compact footprint. The color coding system provides immediate visual identification of load class, enabling fast and accurate spring selection on the shop floor. Their overall performance depends on factors such as wire dimensions, coil outer diameter, free length, and material grade, which together govern load capacity, deflection range, fatigue life, and durability.
What Benefits Can BIAENBHC Spring Provide?
- Standardized Metric Sizing – Dimensioned in millimeters to ISO 10243 and JIS B 5012, they integrate seamlessly into metric tooling systems used across Europe, Asia, and global manufacturing operations.
- Instant Load Class Recognition – The international color code (yellow, blue, red, green, brown) allows technicians to identify load ratings at a glance, minimizing selection errors and reducing downtime during tool changes.
- Superior Fatigue Life – Rectangular wire construction reduces stress concentration at contact points, enabling service lives of 500,000 to over 1,000,000 cycles depending on deflection percentage.
- High Load-to-Size Ratio – Compact outer diameters with high force output make them ideal for space-constrained die pockets and mold cavities in metric tooling.
- Global Interchangeability – Full compliance with ISO 10243 means metric die springs from different suppliers are dimensionally compatible, simplifying sourcing and replacement worldwide.
- Broad Chrome-Silicon Steel Options – Available in chrome-vanadium alloy steel for standard applications and chrome-silicon steel for high-temperature or heavy-duty environments, ensuring the right material match for every condition.
What Can BIAENBHC Spring Be Used for?
- Progressive and Transfer Dies – To provide stripping force, blank holder pressure, and controlled material flow in high-speed metric stamping operations.
- Plastic Injection Molds – For ejector plate return, parting surface sealing pressure, and lifter or slider mechanisms built to metric mold base standards.
- Fine Blanking Tooling – To maintain precise counter-pressure and die clearance control in metric fine blanking presses requiring consistent, repeatable force.
- Die Casting and Forging Dies – To drive knockout and ejector systems in metric tooling subjected to elevated temperatures and high cyclic loads.
- Precision Jigs and Fixtures – As return and preload elements in metric workholding systems used in CNC machining, grinding, and assembly operations.
- Automotive Tooling and Body Dies – In large-format metric stamping dies for body panels, structural components, and chassis parts in automotive manufacturing lines.




