M4-30P4 Bore 685.8 Mm, Standard Single Row Ball Slewing Rings
The M4-30P4 Trailer slewing bearings are widely used in various trailers and agricultural vehicles, such as transport trailers, agricultural trailers, irrigation system slewing devices, airport baggage trailers, RV slewing mechanisms, and special-purpose trailers.
The M4-30P4 bearing is a Standard single row ball slewing rings with an inner diameter of 685.8 mm , an outer diameter of 853.44 mm, a width of 41.91 mm. 50Mn or 42CrMo rings, chrome-alloy steel rolling mlement. Open type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
M4-30P4 bearings ( 685.8 mm x 853.44 mm x 41.91 mm) have the advantages of High load-bearing capacity, flexible steering, and durable, and are therefore widely used in the Heavy transport and special trailers, large agricultural machinery and trailers.
| Part Number | M4-30P4 |
| Bearing Type | Standard single row ball slewing rings |
| Gears type | Gearless |
| Units | inch |
| Seal | Open |
| Rows NO. | One |
| Thrust Fifth Wheel | 5280 |
| Outside - OD Φ [inch] | 33.6 |
| OD Tolerances [inch] | +0.313/-0.200 |
| Inside - ID φ [inch] | 27.0 |
| ID Tolerances [inch] | +0.125/-0.313 |
| IO [inch] | 31.3 |
| IO Tolerances [inch] | +0.125/-0.125 |
| OI [inch] | 29.3 |
| OI Tolerances [inch] | +0.080/-0.080 |
| A [inch] | 0.32 |
| A Tolerances [inch] | +0.063/-0.063 |
| Overall Hight - HT [inch] | 1.65 |
| HT Tolerances [inch] | +0.125/-0.125 |
| Weight [lbs] | 60 |
The M4-30P4 Trailer slewing bearings (lightweight slewing bearings) are mainly composed of thin-walled inner and outer rings, steel balls or rollers, spacers, and sealing devices. Mounting holes are provided on the inner and outer rings for bolt connection; some models can integrate gears. They feature a compact structure, lightweight design, and small cross-sectional dimensions.
Trailer slewing bearings are lightweight, rotate flexibly, and are easy to install and maintain. They can simultaneously withstand axial loads, radial loads, and overturning moments, possessing excellent load-bearing capacity. Direct bolt fixing eliminates the need for complex mounting seats, simplifying the connection structure between the trailer chassis and the superstructure.
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