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| Item | Specification |
|---|---|
| Part Number | 5205705 |
| Product Name | Idler Assembly / Front Idler |
| Product Type | Undercarriage Component |
| Compatible Machine Models | SEM 822D Bulldozer / Tractor |
| Single Weight | 390 kgs (859.8 lbs) |
| Material | High-strength alloy steel, induction-hardened tread surface |
| Sealing Type | Floating / Duo-cone seals for contamination protection |
| Application | Guides and maintains proper tension of the track chain |
| Industry Focus | Construction, Earthmoving, Land Clearing, Mining Support |
SEM 5205705 idler
822D front idler assembly
SEM 822D undercarriage parts
390 kg idler for SEM 822D dozer
Replacement idler for SEM 822D
SEM bulldozer front idler
822D track idler
The SEM 5205705 Idler Assembly (Front Idler) is a genuine OEM-specification undercarriage component designed for the SEM 822D bulldozer/tractor. This idler is a critical component that guides the track chain and maintains proper track tension at the front of the undercarriage.
The SEM 822D is a large bulldozer used in construction, earthmoving, land clearing, and mining support applications. The idler features a precision-machined tread surface with induction hardening for maximum wear resistance. Advanced floating seals prevent contamination and retain lubrication, ensuring extended service life.
| Feature | Benefit |
|---|---|
| Induction-Hardened Tread Surface | Exceptional wear resistance in abrasive conditions |
| Floating / Duo-Cone Seals | Advanced sealing prevents contamination and retains lubrication |
| High-Strength Alloy Steel | Maximum durability for demanding applications |
| Precision Bearings | Smooth rotation with minimal friction for extended service life |
| Heavy-Duty Construction (390 kg) | Robust build for larger dozer applications |
| 822D Optimized | Specifically engineered for SEM 822D bulldozer |
| Direct OEM Replacement | Guaranteed fit and performance |
| Specification | Detail |
|---|---|
| Machine Model | SEM 822D Bulldozer / Tractor |
| Machine Type | Large Bulldozer |
| Position | Front idler |
| Application | Construction, earthmoving, land clearing, mining |
| Part Number | Machine | Weight |
|---|---|---|
| 6031613 | SEM 816D | 210 kg |
| 5205705 | SEM 822D | 390 kg |
| Component | Part Number | Description |
|---|---|---|
| Track Assembly | 5594951 | Complete track assembly (1,600 kg, 40 links) |
| Sprocket Segment | 554-3244 | Sprocket segment (15.8 kg) |
| Bottom Roller (Single) | 6031614 | Single flange roller (83 kg) |
| Bottom Roller (Double) | 6031615 | Double flange roller (73 kg) |
| Top Roller | 6031616 | Carrier roller (40 kg) |
Position: This is a front idler - do not use in other positions
Lifting Requirement: Due to weight (390 kg), specialized lifting equipment and mechanical assistance are required
Bolt Torque: Follow SEM OEM specifications for mounting bolt torque
Track Tension: The idler works with the tensioner to maintain proper track sag
Regular Inspection: Check for tread wear, seal damage, and bearing play periodically
Replacement: Replace when tread wear exceeds OEM specifications or when seal failure occurs
| Condition | Action |
|---|---|
| New tread - sharp profile | Normal operation |
| Moderate tread wear | Monitor regularly |
| Excessive tread wear (flat spots) | Replace idler |
| Seal leakage | Replace idler immediately |
| Bearing play | Replace idler |
| Item | Detail |
|---|---|
| Part Number | 5205705 |
| Type | Idler Assembly / Front Idler |
| Weight | 390 kg per piece |
| Compatibility | SEM 822D Bulldozer / Tractor |
| Packaging | Individual crate |
Note: This is a front idler assembly for the SEM 822D bulldozer. Due to its weight (390 kg), specialized lifting equipment and professional installation are required. Verify machine serial number and undercarriage configuration before ordering. Regular inspection of the idler tread and seals is essential for optimal undercarriage performance.
