The "oil seal housing" (a.k.a. seal seat) is a machined or cast mounting flange that centers and locks the rotary shaft seal onto the bore where a rotating shaft penetrates the casing. On XCMG export machines, the 79500813A-type seat is typically found on axle hubs, travel/slew reducers, and hydraulic pump/motor end covers. The suffix RZ indicates the seating face is machined to accept an RZ-type non-contact lip seal — steel-backed NBR, low-friction, dust-proof, suited for higher shaft speeds (think bearing-style RZ, not heavy-waterproof RS).
⚠️ Important for buyers: This PN is the metal housing/seat, NOT the rubber oil seal. If a jobsite is fixing a leak, they usually need boththe housing and the matching rotary shaft seal. Quoting them as a "Seal + Housing Kit" cuts after-sales comebacks significantly.
Key Specifications (typical per XCMG OEM drawing — confirm on batch COC)
|
Item |
Detail |
|---|---|
|
XCMG PN |
860103346 |
|
Drawing / Sub-PN |
79500813A |
|
Seal interface |
RZ-type (non-contact lip seal seat) |
|
Material |
Cast iron or forged steel, machined seating face (hardness / heat treatment per XCMG dwg) |
|
Mating parts |
Rotary shaft oil seal (TC / TG / RZ profile, dims by shaft Ø) + O-ring on housing flange |
|
Application |
Axle hub, travel reducer, swing reducer, pump/motor end cover |
The "oil seal housing" (a.k.a. seal seat) is a machined or cast mounting flange that centers and locks the rotary shaft seal onto the bore where a rotating shaft penetrates the casing. On XCMG export machines, the 79500813A-type seat is typically found on axle hubs, travel/slew reducers, and hydraulic pump/motor end covers. The suffix RZ indicates the seating face is machined to accept an RZ-type non-contact lip seal — steel-backed NBR, low-friction, dust-proof, suited for higher shaft speeds (think bearing-style RZ, not heavy-waterproof RS).
⚠️ Important for buyers: This PN is the metal housing/seat, NOT the rubber oil seal. If a jobsite is fixing a leak, they usually need boththe housing and the matching rotary shaft seal. Quoting them as a "Seal + Housing Kit" cuts after-sales comebacks significantly.
Key Specifications (typical per XCMG OEM drawing — confirm on batch COC)
|
Item |
Detail |
|---|---|
|
XCMG PN |
860103346 |
|
Drawing / Sub-PN |
79500813A |
|
Seal interface |
RZ-type (non-contact lip seal seat) |
|
Material |
Cast iron or forged steel, machined seating face (hardness / heat treatment per XCMG dwg) |
|
Mating parts |
Rotary shaft oil seal (TC / TG / RZ profile, dims by shaft Ø) + O-ring on housing flange |
|
Application |
Axle hub, travel reducer, swing reducer, pump/motor end cover |
