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Product Photo
TIMKENCylindrical Roller Bearings
TIMKEN 3978 - 3920
Cylindrical Roller Bearings · Dimensions on request
✓323,474 SKUs in the online catalogue
✓OEM & custom bearings welcome
✓Reply within 30 minutes (working days)
✓Global shipping from Wuxi, China
Wuxi Andge Bearing Co., Ltd.Professional bearing supplier · Wuxi, Jiangsu, China
⚡ Reply ≤ 30 min
The TIMKEN 3978 - 3920 is a Cylindrical Roller Bearings, available in the dimensions listed in the specification table below. Supplied by Wuxi Andge Bearing Co., Ltd. (AndgeBearing), a bearing manufacturer and exporter based in Wuxi, Jiangsu, China — OEM and custom bearings welcome, RFQ replied within 30 minutes on working days.
Full Specifications
| Brand | TIMKEN |
|---|---|
| Category | Cylindrical Roller Bearings |
| Type | Cylindrical Roller Bearings |
| Dimensions (d × D × B) | Dimensions on request |
| Catalogue Ref. | oZMMDu9b9w |
| Aa - Cage-Cone Backface Clearance | 1.5 mm0.06 in |
| Ab - Cage-Cone Frontface Clearance | 2 mm0.08 in |
| B - Cone Width | 30.048 mm1.1830 in |
| Bearing Weight | 1.3 Kg2.9 lb |
| C - Cup Width | 23.813 mm0.9375 in |
| C0 - Static Radial Rating | 43000 lbf191000 N |
| Cage Type | Stamped Steel |
| Cone Part Number | 3978 |
| Cup Part Number | 3920 |
| D - Cup Outer Diameter | 112.713 mm4.4375 in |
| Da - Cup Frontface Backing Diameter | 106.17 mm4.18 in |
| Db - Cup Backface Backing Diameter | 99.06 mm3.90 in |
| Design Units | Imperial |
| G1 - Heat Generation Factor (Roller-Raceway) | 75.2 |
| G2 - Heat Generation Factor (Rib-Roller End) | 21.3 |
| Series | 3900 |
| T - Bearing Width | 30.163 mm1.1875 in |
| d - Bore | 59.530 mm2.3437 in |
| da - Cone Frontface Backing Diameter | 68.07 mm2.68 in |
| db - Cone Backface Backing Diameter | 70.1 mm2.76 in |
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