SKF 30226 T97.5/DB (30226T97.5/DB) Tapered Roller Bearing Pair – Back-to-Back, 130 × 230 × 97.5 mm
SKF Explorer · Matched set of 2 · Back-to-back (O arrangement) · Sheet metal cage
Lead time to our warehouse: 15-20 WORKING DAYS
The SKF 30226 T97.5/DB (30226T97.5/DB) is a matched set of two single-row tapered roller bearings, arranged back-to-back (O arrangement) with a 130 mm bore, 230 mm outside diameter and 97.5 mm total width. In this arrangement the load lines spread outward toward the bearing axis, so the set carries heavy radial loads, axial loads in both directions and tilting moments in one compact bearing position.
Precision-made spacer rings sit between the two inner rings and between the two outer rings. They set a defined internal clearance or preload once the bearing is mounted, so no shimming or adjustment is needed on site. The outer spacer has a lubrication groove and holes for relubrication. As an SKF Explorer bearing, the set is rated at 774 kN dynamic and 980 kN static load capacity, and its rollers and raceways have a contact-surface finish that improves operational reliability.
Designation explained
| 302 | Single-row tapered roller bearing, ISO dimension series 02 (ISO 355 / DIN 720) |
|---|---|
| 26 | Bore code: 26 × 5 = 130 mm bore |
| T97.5 | Total width of the bearing pair: 97.5 mm |
| DB | Two bearings matched as a set, arranged back-to-back (O arrangement) |
Key features
- High radial load carrying capacity: 774 kN dynamic, 980 kN static
- Carries axial loads in both directions and locates the shaft both ways
- Accommodates tilting moments, with a 99.2 mm distance between pressure points
- Relatively high stiffness from the back-to-back (O) arrangement
- Precision spacer rings give a defined clearance or preload when mounted
- Lubrication groove and holes in the outer spacer for relubrication
- SKF Explorer performance class with an improved roller and raceway surface finish
Technical specifications
| Brand | SKF |
|---|---|
| Designation | 30226T97.5/DB (30226 T97.5/DB) |
| Bearing type | Matched tapered roller bearings, back-to-back |
| Performance class | SKF Explorer |
| Bearings in matched set / rows | 2 / 2 |
| Bore diameter (d) | 130 mm (5.1181 in) |
| Outside diameter (D) | 230 mm (9.0551 in) |
| Total width (T) | 97.5 mm (3.8386 in) |
| Width of inner rings | 97.5 mm (3.8386 in) |
| Width of outer rings (C) | 78 mm (3.0709 in) |
| Width of spacer ring (l) | 10 mm (0.3937 in) |
| Contact angle | 16.2° |
| Distance between pressure points (a) | 99.2 mm (3.906 in) |
| Bore type | Cylindrical |
| Cage | Sheet metal (pressed steel) |
| Relubrication feature | Yes: lubrication groove 4 mm (0.1575 in) wide, lubrication hole 3 mm (0.1181 in) diameter |
| Sealing / coating / lubricant | None (open, uncoated, supplied without lubricant) |
| Outer ring locating feature | None |
| Tolerances | Normal + CL7C, P5 total width |
| Net weight | 14.9 kg (32.8 lb) |
| eClass code | 23-05-09-10 |
Calculation data
| Basic dynamic load rating (C) | 774 kN (174,002 lbf) |
|---|---|
| Basic static load rating (C0) | 980 kN (220,313 lbf) |
| Fatigue load limit (Pu) | 102 kN (22,931 lbf) |
| Reference speed | 1,800 r/min |
| Limiting speed | 2,800 r/min |
| Limiting value (e) | 0.43 |
| Calculation factors | Y1 = 1.6 · Y2 = 2.3 · Y0 = 1.6 |
Abutment and fillet dimensions
| Shoulder diameter of inner ring (d1) | ≈ 173.3 mm (6.8228 in) |
|---|---|
| Chamfer dimension (r1,2 min.) | 4 mm (0.1575 in) |
| Chamfer dimension (r5 min.) | 1 mm (0.0394 in) |
| Shaft abutment diameter (db min.) | 146.5 mm (5.7677 in) |
| Housing abutment diameter (Db min.) | 217 mm (8.5433 in) |
| Housing space on small side face (Cb min.) | 9.5 mm (0.374 in) |
| Fillet radius (ra max.) | 4 mm (0.1575 in) |
| Fillet radius (rc max.) | 1 mm (0.0394 in) |
Typical applications
- Industrial gearboxes
- Hoisting equipment and cranes
- Rolling mills
- Mining machinery
- Any shaft position that needs rigid two-direction axial location under heavy combined loads and tilting moments
Cross references and equivalents
| Brand / type | Part numbers |
|---|---|
| SKF designation variants | 30226T97.5/DB, 30226 T97.5/DB, 30226T975DB, 30226 T97.5J2/DB, 30226T97.5J2/DB, 30226 T97.5 J2/DB, 30226T975J2DB |
| Timken (matched back-to-back assembly) | 30226T97.5DB-90KM3 (130 × 230 × 97.5 mm, 2TS assembly) |
| Single-row 30226 equivalents One bearing only, not a matched pair |
SKF 30226 (30226 J2), NSK 30226J, NTN 30226U, Koyo 30226JR, FAG 30226-XL, FAG 30226-A, SNR 30226A, ZVL 30226A, NKE 30226 |
Before you order
Check the arrangement and total width. This set is back-to-back (DB) with a 97.5 mm total width. Face-to-face sets such as SKF 30226/DF (30226 J2/DF) and Timken 30226DF-90KA2 are 87.5 mm wide and are not interchangeable with this set.
Replace matched pairs as a complete set. The clearance is set by the two bearings and their spacer rings together, so two single 30226 bearings cannot be substituted for a DB pair without re-setting the clearance.