Premium 4955853 Cummins QSB6.7 main thrust bearing in stock. Trimetal construction handles high axial loads for Komatsu PC200-8 and Sany SY215C excavators. Prevents crankshaft walk and excessive end play. Global shipping. Request wholesale quote!
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The Cummins QSB6.7/ISDe main thrust bearing (OEM: 4955853) is a reinforced trimetal component designed to control crankshaft axial movement.
It prevents end-play wear in equipment including Komatsu PC200-8, Sany SY215C, and Liugong 922E excavators.
Factory direct supply with high-load precision.
Controlling crankshaft end-play is critical for the longevity of the Cummins 6.7L common rail engine. Our ISDe / QSB6.7 Main Thrust Bearing sets are precision-manufactured to replace OEM 4955853, providing the axial stability needed for heavy hydraulic loads found in Komatsu PC200-8 excavators and Dongfeng commercial trucks.
Ruich Value delivers a robust aftermarket solution that matches the “D Series” engine’s requirement for high load-bearing capacity. Featuring a reinforced flanged design (or thrust washer configuration depending on spec) and advanced alloy composition, these bearings ensure consistent oil pressure and reduced wear, making them the preferred choice for engine rebuilders servicing Tier 3 and Tier 4 industrial equipment.
| Specification | Value |
|---|---|
| Product Type | Main Thrust Bearing Set |
| Material Composition | Trimetal (Steel Back, Copper-Lead, Babbitt Overlay) |
| Engine Platform | Cummins QSB6.7 / ISDe 6.7L |
| Dimensional Tolerance | +/- 0.005mm (Precision Match) |
| Surface Coating | Tin-Lead Overlay (Anti-Friction) |
| Axial Load Capacity | Reinforced for Hydraulic Pump Torque |
| OEM Reference | 4955853 |
| Cross Reference | 4955854, 5263262, 3966244 |
| Typical Applications | Komatsu PC200-8, Sany SY215C, Liugong 922E, Dongfeng Kinland |
| Application Category | Heavy Construction Machinery & Earthmoving |
| Engine Model | Application Field | Verified Equipment Models |
|---|---|---|
| Cummins QSB6.7 | Construction (Excavators) | Komatsu PC200-8, PC220-8, PC240LC-10 |
| Cummins ISDe 285/300 | Heavy Transport | Dongfeng Kingland, Kingrun Trucks, Yutong Buses |
| Cummins QSB4.5 | Material Handling | Hyster H155FT, Kalmar Reach Stackers |
Ruich Value supplies a dedicated range of Cummins engine bearings including forged, cast and reman replacements.
Category coverage: B3.3; 4BT/6BT; ISDe/QSB6.7; 6CT/6CTA; ISL9/QSL9.
| Engine Model | Item Name | Part No. |
|---|---|---|
| 6BT / EQBT (5.9L) | Main Bearing | 3929016, 3929021, 3901150, 3901306, (3802070 set), 3927772, 4892114/4892715 |
| B Series (3.9L/4.5L) / QSB | Main Bearing | 3978818 / 3978820 / 3978822 (Set), 3977272 |
| B Series (3.9L/4.5L) / QSB | Connecting Rod Bearing | 3969562, 4893693 |
| EQBTA | CAM Bushing | 3971970, 3901090, 3901170 |
| 4BTA390 | Connecting Rod Bearing | 3901170, 3941476 |
| Cummins C (8.3L) | Main BearingMain Bearing | 3944158 / 15/1163, 3945917 |
| Cummins C (8.3L) | Connecting Rod Bearing | 3950661, 3917430 (Standard) |
| Cummins C (8.3L) | Flanged Bearing | 3944163 |
| Cummins C (8.3L) | CAM Bearing | 3943199, 3945329 |
| Cummins C (8.3L) | CAM Bushing | 3913990 |
| Cummins L (10L) | Main Bearing | 3901590, 3919840, 3926798 |
| Cummins L (10L) | Connecting Rod Bearing | 3966344 / 3950661 |
| Cummins D (B Series) | Flanged Bearing | 3978822 / 24 (Thrust Washer Set) |
| ISDe (Cummins Renault D) | CAM Bearing | D4889112 |
| ISDe (Cummins Renault D) | CAM Bushing | D4890059 |
| ISDe (Cummins Renault D) | Rod Bearing | D4893637 |
| Dongfeng Renault (DCI11) | Main Bearing | D5010295445 (Upper), D5010295446 (Lower) |
| Dongfeng Renault (DCI11) | Connecting Rod Bearing | D5010359940 (Upper), D5010477479 (Lower) |
| Dongfeng Renault (DCI11) | Thrust Washers | D5010295448 / D5010295447 |
| QSZ(ISZ)13 | Main Bearing | 4999939 (Upper), 4999940 (Lower) |
| QSZ(ISZ)13 | Connecting Rod Bearing | 4999948 (Upper), 4999949 (Lower) |
| FOTON CUMMINS (3.8L) | Main Bearing | 4948505/4948506 |
| FOTON CUMMINS (3.8L) | Flanged Bearing (Upper/Lower) | 4948507/4948508 |
| FOTON CUMMINS (3.8L) | Connecting Rod Bearing (Upper/Lower) | 4948509/4949510 |
| FOTON CUMMINS (2.8L) | Main Bearing (Upper/Lower) | 4996250/49966251 |
| FOTON CUMMINS (2.8L) | Flanged Bearing | 4946031 |
| FOTON CUMMINS (2.8L) | Connecting Rod Bearing | 5261124 / 5284535 / 5340181 / 5348887 / 5261125 / 5284537 / 5340182 |
| NT855 (13L/15L) | Main Bearing | 3801260 |
| NT855 (13L/15L) | Connecting Rod Bearing | 214950 |
| NT855 | Thrust Washers (Small Hole) | 203660 |
| N14 (NT743/NH220) | Thrust Washers | 3020557 |
| N14 (NT74) | Main Bearing | 3801260 |
| M11 (LT10) | Main Bearing | 3016770 (Upper), 3016780 (Lower) |
| M11 (LT10) | Thrust Washers | 3016760 (Set), 4025125 (Without Flange) |
| KTA(QSK)19 | Main Bearing | 3016760, AR12270A |
| KTA(QSK)19 | Connecting Rod Bearing | 205840 |
| KTA(QSK)19 | Thrust Washers | 205112 |
| KTA(QSK)38 / KTA(QSK)50 | Main Bearing | 3018210 (Standard Set), AR12250 |
| KTA(QSK)38 / KTA(QSK)50 | Connecting Rod Bearing | 3042390 |
| KTA(QSK)38 / KTA(QSK)50 | Thrust Washers | 3000139 |
| QSX(ISX)15 | Main Bearing | 3678555 (Upper), 3678556 / 3800298 (Upper), 4089139 / 4089405 (Lower) |
| QSX(ISX)15 | Connecting Rod Bearing | 4925971 |
| QSX(ISX)15 | Thrust Washers | 4925975 |
A1: Symptom: Excessive crankshaft end play or “clunking” noises under torque changes. Diagnosis: In construction machines like the Komatsu PC200-8, extreme hydraulic loading on the transmission/PTO can exceed the axial limit of the thrust face. Solution: Our 4955853 bearings feature an optimized copper-lead layer, providing the structural rigidity needed to maintain crankshaft position under repeated high-torque shocks.
A2: Technical Detail: Crankshaft end play must be verified to 0.15mm – 0.40mm. Pro-Tip: Check the crankshaft thrust face for scoring before installation. A worn crankshaft surface will destroy the new 4955853 bearing face within 100 operating hours; always polish or grind the journal if surface wear is evident.
A3: Diagnosis: Bimetal bearings often undergo surface “wiping” when the lubrication oil film is intermittently disrupted during heavy digging. Our Solution: Our trimetal construction uses a Babbitt overlay that is soft enough to embed contaminants, yet supported by a copper-lead alloy capable of supporting the massive axial loads of modern QSB engine-powered heavy excavators.
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