Brief information
| Country and region of origin | China, Shandong Province |
|---|---|
| Series | SN-H |
| Brand | SENNAI |
| Minimum order | 100 pcs. |
| Published price | US$0.60/piece when ordering 100-499 pcs. |
| Packaging | Plastic packaging |
| Production Capability | 2,000 pcs. per day |
Product Description
The inner surface of the SN-H steel bushing is made with various types of oil grooves. After heat treatment, this design provides increased surface hardness and wear resistance. The bushings are designed for loaded joints on construction equipment, including excavators, rotary drilling rigs, large loaders and grabs.
Steel bushings are made from 45#, 40Cr, 20CrMo, GCr15 and other materials. Every step, from raw material to finished product, is controlled to ensure quality, high wear resistance, hard surface and tough core.
| Performance indicator | Unit | Meaning |
|---|---|---|
| Hardness | H.R.C. | 50-62 |
| Maximum load | N/mm² | 80 |
| Maximum linear speed | m/min | 1.5 |
| Maximum PV value | N/mm² m/s | 2 |
| Limit operating temperature | °C | -70~+300 |
| Linear expansion coefficient | 10-5/°C | 1.1 |
Product data
SN-H-1
Solid hardened steel bushing.
Material: 40Cr medium carbon alloy steel.
Surface: phosphating and sputtering of molybdenum disulfide on the inner surface.
Process: volumetric hardening, hardness 50-55 HRC.
SN-H-2
Cemented and hardened steel bushing.
Material: 20CrMnTi, 20CrMo and other low carbon or low alloy steels.
Surface: phosphating and sputtering of molybdenum disulfide on the inner surface.
Process: carburization and surface hardening; surface hardness 58-62 HRC.
Depth of the cemented layer: 1.0-1.5 mm.
SN-H-3
High frequency hardened steel bushing.
Material: 45 or 40Cr steel.
Surface: phosphating and sputtering of molybdenum disulfide on the inner surface.
Process: hardness after quenching and tempering 201-269 HB; the internal surface is subjected to high-frequency hardening up to 55-60 HRC, the effective depth of the hardened layer is 1.0-2.0 mm.
