745/742-B
📏 59.9313 × 150.114 × 15.875 mm
Product Photo
TIMKENCustom & Special Bearings
TIMKEN 3978/3920
Custom & Special Bearings · 59.53 × 112.712 × 30.1752 mm
59.53Bore d (mm)
112.712Outer D (mm)
30.1752Width B (mm)
✓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 Custom & Special Bearings, with a bore diameter (d) of 59.53 mm, an outer diameter (D) of 112.712 mm and a width (B) of 30.1752 mm. 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 | Custom & Special Bearings |
| Type | Custom & Special Bearings |
| Dimensions (d × D × B) | d 59.53 mm × D 112.712 mm × B 30.1752 mm |
| Catalogue Ref. | 7sWXrBcmds |
| Aa | 2.286 mm |
| Ab | 1.016 mm |
| Assembly Weight | 1333.56 g |
| B | 30.0482 mm |
| Bearing Subtype | TS |
| Bearing Type | TRB |
| C | 23.8125 mm |
| C0 | 191274 N |
| C1 | 138785 N |
| C90 | 35986.1 N |
| Ca90 | 24776.6 N |
| Cg | 0.1092 Geometric factor |
| Cone (Inner) | 3978 Inner ring |
| Cup (Outer) | 3920 Outer ring |
| Da | 105.918 mm |
| Db | 99.06 mm |
| K = 0.39 / Tan (contact angle) | 1.45 Factor |
| R | 1.524 mm |
| T | 30.1752 mm |
| Y = 0.4 / Tan (contact angle) | 1.49 Factor |
| a | -4.572 mm |
| da | 68.072 mm |
| db | 70.104 mm |
| e = 1.5 * Tan (contact angle) | 0.40 Factor |
| r | 3.302 mm |
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