The SKF SNL 3136 is a robust, two-piece split plummer (pillow) block housing from the SNL 30, 31 and 32 series, specifically designed for tough operating conditions. It enables incorporated bearings to achieve maximum service life with reduced maintenance requirements, making it an ideal choice for cost-effective bearing arrangements.
Key Features
- Easy Installation: Split design allows for simple mounting and dismounting without removing the shaft
- Cost-Effective: Eliminates need for custom housings with versatile design
- Maintenance-Friendly: Optimized lubrication system minimizes lubricant leakage and extends relubrication intervals
- Robust Construction: High-quality cast iron material ensures durability in demanding industrial environments
- Flexible Sealing Options: Compatible with various SKF seal designs for different application requirements
Technical Specifications (Metric & Imperial)
Core Dimensions
| Parameter | Metric | Imperial |
|---|
| Bearing seat diameter (Dₐ) | 300 mm | 11.811 in |
| Bearing seat tolerance class | G7 | G7 |
| Bearing seat width (Cₐ) | 116 mm | 4.5669 in |
| Centre height (H₁) | 180 mm | 7.0866 in |
| Overall length (L) | 530 mm | 20.8661 in |
| Overall width (A) | 240 mm | 9.4488 in |
| Overall height (H) | 352 mm | 13.8583 in |
| Bore diameter (Dᵦ) | 181 mm | 7.1339 in |
Mounting & Fastening
| Parameter | Metric | Imperial |
|---|
| Number of bolt holes | 4 | 4 |
| Attachment bolt diameter | 24 mm | 0.9449 in |
| Distance between attachment bolts (J) | 450 mm | 17.7165 in |
| Axial distance between attachment bolts (J₁) | 110 mm | 4.3307 in |
| Recommended tightening torque for attachment bolts | 800 Nm | 5,886 lbf·in |
| Cap bolt size | M24x140 | M24x140 |
| Cap bolt tightening torque | 4,200 Nm | 3,098 lbf·in |
| Eye bolt size | M16 | M16 |
Materials & Protection
| Parameter | Details |
|---|
| Housing material | Cast iron |
| Corrosion protection | Paint - ISO 12944-2, corrosivity category C2 |
| Net weight | 76.7 kg (169 lb) |
Lubrication & Sealing
| Parameter | Details |
|---|
| Lubrication method | Grease |
| Relubrication hole thread | 1/8-27 NPSF (G 1/8) |
| Initial grease fill (20%) | 930 ml (31.7 oz) |
| Initial grease fill (40%) | 1,460 ml (49.4 oz) |
| Included accessories | AH 1/8-27 PTF grease fitting, LAPN 1/8 adapter |
Seal Groove Dimensions
| Parameter | Metric | Imperial |
|---|
| Seal groove diameter (Dᶜ) | 196.4 mm | 7.7323 in |
| Seal groove diameter (Dᵈ) | 205.2 mm | 8.0787 in |
| Width between seal grooves (A₇) | 224 mm | 8.8189 in |
Mechanical Performance
| Breaking Load | Value |
|---|
| P₀° (0° load angle) | 1,900 kN (427,137 lbf) |
| P₅₅° (55° load angle) | 2,400 kN (539,541 lbf) |
| P₉₀° (90° load angle) | 1,150 kN (258,530 lbf) |
| P₁₂₀° (120° load angle) | 850 kN (191,088 lbf) |
| P₁₅₀° (150° load angle) | 760 kN (170,855 lbf) |
| P₁₈₀° (180° load angle) | 950 kN (213,568 lbf) |
| Pₐ (axial breaking load) | 620 kN (139,382 lbf) |
Compatible Bearings
The SNL 3136 housing is designed for use with spherical roller bearings requiring a 300 mm diameter bearing seat, typically including:
- 22328K, 22330K, 22232K, 22234K series bearings
- Bearings with adapter sleeves (e.g., AH 3136) or withdrawal sleeves
Applications
Ideal for heavy-duty industrial applications including:
- Conveyor systems
- Paper and pulp machinery
- Mining and mineral processing equipment
- Aggregate and cement plants
- General industrial machinery requiring reliable, low-maintenance bearing support
