





- Ultra-Lightweight for Reduced Unsprung Mass
- Maximum Deflection in Combination with Smallest Block Heights
- Exceptional Block Resistance and Durability
- Precision Tolerances - The Tightest in the Industry
- Precision Planparallel and Square End Configurations Under Unloaded and Loaded Conditions to Β± Degree
- Lowest Side Loads with Load Center Ideally Located Relative to Spring Axis
- Highest Linearity and Guaranteed Rate Consistency Within 2% Of Advertised Rate
- Each Spring Individually Tested and Rated
Part # | Length inch/mm |
Inside Diameter inch/mm |
Rate lbs/inch kg/mm N/mm |
Block Height inch/mm |
Travel inch/mm |
Load at Block Height lbs/N |
|||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ERS-1200-375-0150S | 12.00 | 305 | 3.75 | 95 | 150 | 2.68 | 26 | 3.04 | 77 | 8.97 | 228 | 1,335 | 5,983 |
ERS-1200-375-0200S | 12.00 | 305 | 3.75 | 95 | 200 | 3.57 | 35 | 3.38 | 86 | 8.62 | 219 | 1,725 | 7,673 |
ERS-1200-375-0250S | 12.00 | 305 | 3.75 | 95 | 250 | 4.46 | 44 | 3.56 | 90 | 8.44 | 214 | 2,111 | 9,390 |
ERS-1200-375-0300S | 12.00 | 305 | 3.75 | 95 | 300 | 5.36 | 53 | 3.84 | 98 | 8.16 | 207 | 2,447 | 10,885 |
ERS-1200-375-0350S | 12.00 | 305 | 3.75 | 95 | 350 | 6.25 | 61 | 4.17 | 106 | 7.83 | 199 | 2,741 | 12,193 |
ERS-1200-375-0400S | 12.00 | 305 | 3.75 | 95 | 400 | 7.14 | 70 | 4.28 | 109 | 7.72 | 196 | 3,087 | 13,732 |

Description
- Ultra-Lightweight for Reduced Unsprung Mass
- Maximum Deflection in Combination with Smallest Block Heights
- Exceptional Block Resistance and Durability
- Precision Tolerances - The Tightest in the Industry
- Precision Planparallel and Square End Configurations Under Unloaded and Loaded Conditions to Β± Degree
- Lowest Side Loads with Load Center Ideally Located Relative to Spring Axis
- Highest Linearity and Guaranteed Rate Consistency Within 2% Of Advertised Rate
- Each Spring Individually Tested and Rated
Part # | Length inch/mm |
Inside Diameter inch/mm |
Rate lbs/inch kg/mm N/mm |
Block Height inch/mm |
Travel inch/mm |
Load at Block Height lbs/N |
|||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ERS-1200-375-0150S | 12.00 | 305 | 3.75 | 95 | 150 | 2.68 | 26 | 3.04 | 77 | 8.97 | 228 | 1,335 | 5,983 |
ERS-1200-375-0200S | 12.00 | 305 | 3.75 | 95 | 200 | 3.57 | 35 | 3.38 | 86 | 8.62 | 219 | 1,725 | 7,673 |
ERS-1200-375-0250S | 12.00 | 305 | 3.75 | 95 | 250 | 4.46 | 44 | 3.56 | 90 | 8.44 | 214 | 2,111 | 9,390 |
ERS-1200-375-0300S | 12.00 | 305 | 3.75 | 95 | 300 | 5.36 | 53 | 3.84 | 98 | 8.16 | 207 | 2,447 | 10,885 |
ERS-1200-375-0350S | 12.00 | 305 | 3.75 | 95 | 350 | 6.25 | 61 | 4.17 | 106 | 7.83 | 199 | 2,741 | 12,193 |
ERS-1200-375-0400S | 12.00 | 305 | 3.75 | 95 | 400 | 7.14 | 70 | 4.28 | 109 | 7.72 | 196 | 3,087 | 13,732 |

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