SI-ES / SIL-ES rod end bearings are female-thread rod ends designed for applications requiring precise articulation, reliable connection and a larger spherical joint. SI-ES uses right-hand thread, while SIL-ES provides left-hand thread options for different installation requirements.
Using a steel body and a steel-on-steel sliding contact pair that requires appropriate relubrication, our SI-ES / SIL-ES rod end bearings provide smooth movement, good wear resistance and stable performance for industrial linkage and motion systems.
We manufacture SI-ES / SIL-ES female rod end bearings in a range of thread sizes and dimensions. Standard sizes, OEM requirements and customized solutions are available for bulk orders directly from our factory. Looking for the male-thread version? View SA-ES / SAL-ES Series Rod End Bearings.
We offer standard sizes, right-hand and left-hand threads, and customized solutions according to customer requirements. Selection note: confirm the SI-ES or SIL-ES thread direction, bore, thread pitch, bearing construction, and lubrication requirements against your drawing. Do not substitute SI T/K or SI-C versions solely because the nominal bore matches.
SI models use right-hand female threads; SIL models use left-hand female threads. Dimensions are in mm unless noted; basic load ratings are shown in kN.
| Model | Weight (kg) | Main Dimensions | Basic Load Rating | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| d | B | C1 | d2 max | l4 | l2 | d3 | l3 | α ≈ | Dynamic | Static | ||
| SI5E / SIL5E | 0.016 | 5 | 6 | 4.5 | 21 | 42 | 30 | M5×0.8 | 11 | 13° | 3.4 | 8.1 |
| SI6E / SIL6E | 0.021 | 6 | 6 | 4.5 | 21 | 42 | 30 | M6×1 | 11 | 13° | 3.4 | 8.1 |
| SI8E / SIL8E | 0.039 | 8 | 8 | 6.5 | 24 | 49 | 36 | M8×1.25 | 15 | 15° | 5.5 | 12.9 |
| SI10E / SIL10E | 0.061 | 10 | 9 | 7.5 | 29 | 58 | 43 | M10×1.5 | 15 | 12° | 8.1 | 17.6 |
| SI12E / SIL12E | 0.096 | 12 | 10 | 8.5 | 34 | 67 | 50 | M12×1.75 | 18 | 10° | 10.8 | 24.5 |
| SI15ES / SIL15ES | 0.18 | 15 | 12 | 10.5 | 40 | 81 | 61 | M14×2 | 21 | 8° | 17 | 36 |
| SI17ES / SIL17ES | 0.22 | 17 | 14 | 11.5 | 46 | 90 | 67 | M16×2 | 24 | 10° | 21 | 45 |
| SI20ES / SIL20ES | 0.35 | 20 | 16 | 13.5 | 53 | 104 | 77 | M20×1.5 | 30 | 9° | 30 | 60 |
| SI25ES / SIL25ES | 0.64 | 25 | 20 | 18 | 64 | 126 | 94 | M24×2 | 36 | 7° | 48 | 83 |
| SI30ES / SIL30ES | 0.93 | 30 | 22 | 20 | 73 | 147 | 110 | M30×2 | 45 | 6° | 62 | 110 |
| SI35ES / SIL35ES | 1.3 | 35 | 25 | 22 | 82 | 167 | 125 | M36×2 | 60 | 6° | 80 | 146 |
| SI40ES / SIL40ES | 2.0 | 40 | 28 | 24 | 92 | 190 | 142 | M39×2 | 65 | 7° | 100 | 180 |
| SI45ES / SIL45ES | 2.5 | 45 | 32 | 28 | 102 | 199 | 145 | M42×2 | 65 | 7° | 127 | 240 |
| SI50ES / SIL50ES | 3.5 | 50 | 35 | 31 | 112 | 221 | 160 | M45×2 | 68 | 6° | 156 | 290 |
| SI60ES / SIL60ES | 5.5 | 60 | 44 | 39 | 135 | 247 | 175 | M52×2 | 70 | 6° | 245 | 450 |
| SI70ES / SIL70ES | 8.6 | 70 | 49 | 43 | 160 | 283 | 200 | M56×2 | 80 | 6° | 315 | 610 |
| SI80ES / SIL80ES | 12.0 | 80 | 55 | 48 | 180 | 325 | 230 | M64×2 | 85 | 6° | 400 | 750 |
Send us the model number, quantity and destination. We’ll provide detailed dimensions, pricing and production information.
