23044 CA/W33 Double-Row Spherical Roller Bearing Overview
The 23044 CA/W33 (also written as 23044CA/W33 and frequently cross-referenced with inquiry designations such as 23044CCW33C3, 23044 CC/W33 C3, 23044 CA/W33 C3, 23044-E1A-XL-M-C3) is a heavy-duty double-row spherical roller bearing in the ISO 230 series with boundary dimensions of 220 mm × 340 mm × 90 mm (220×340×90 mm) and a catalog reference mass of 29.7 kg. Engineered with a one-piece machined brass cage (CA) and an annular lubrication groove with three oil holes in the outer ring (W33), it provides a basic dynamic load rating of 1,090 kN and a basic static load rating of 1,980 kN, accommodating heavy radial loads, bidirectional axial loads, and dynamic shaft misalignment.
ZQM Bearings supplies the 23044 CA/W33 spherical roller bearing in both standard normal radial clearance (C0) and C3 radial internal clearance (matching 23044CCW33C3 specifications) for international bearing distributors, heavy machinery OEMs, and plant maintenance teams.
| Core Attribute | Specification | Engineering Note |
|---|---|---|
| Controlled Model | 23044 CA/W33 (23044CA/W33) | Covers inquiry code 23044CCW33C3 (CA/CC design + W33 + C3 clearance) |
| Bearing Type | Double-Row Spherical Roller Bearing | Self-aligning spherical outer ring raceway; cylindrical bore (1:12 K tapered bore optional) |
| Boundary Dimensions (d × D × B) | 220 mm × 340 mm × 90 mm | ISO 15 / DIN 635-2 metric dimension series 230 |
| Load Ratings & Mass | Cr = 1,090 kN · C0r = 1,980 kN · Mass = 29.7 kg | Verified against ZQM controlled engineering database |
23044 CA/W33 Technical Specifications (220×340×90 mm)
The following dimensional, load rating, speed, and abutment parameters are dynamically synchronized with the ZQM Bearings controlled engineering database to ensure 100% consistency with our online catalog:
Data source: ZQM Bearings controlled model database. Verify shaft/housing fits (da, db, Da), internal clearance and drawing requirements before ordering.23044CA/W33 Technical Specifications & Dimensions
Parameter Category Technical Parameter (Symbol) Catalogue Value Boundary Dimensions & Weight Bore diameter (d) 220 mm Boundary Dimensions & Weight Outside diameter (D) 340 mm Boundary Dimensions & Weight Width (B) 90 mm Boundary Dimensions & Weight Reference mass (Weight) (mass) 29.7 kg Load Ratings & Limiting Speeds Basic dynamic load rating (Cr) 1090 kN Load Ratings & Limiting Speeds Basic static load rating (Cor) 1980 kN Load Ratings & Limiting Speeds Limiting speed (grease) (grease) 950 rpm Load Ratings & Limiting Speeds Limiting speed (oil) (oil) 1200 rpm Abutment & Fillet Dimensions Shaft abutment diameter (da) 234 mm Abutment & Fillet Dimensions Housing abutment diameter (Da) 326 mm Abutment & Fillet Dimensions Minimum chamfer dimension (r12) 3 mm Abutment & Fillet Dimensions Maximum fillet radius (ra) 2.5 mm Calculation Factors Calculation factor (e) 0.24 Calculation Factors Axial load factor (Y0) 2.7 Calculation Factors Axial load factor (Y1) 2.8 Calculation Factors Axial load factor (Y2) 4.1
Designation Breakdown & Structural Features (23044 CA/W33 / 23044CCW33C3)
Understanding the suffix nomenclature between standard catalog code 23044 CA/W33 and customer inquiry code 23044CCW33C3 ensures accurate technical interchangeability:
| Code Segment | Structural Meaning | Application & Interchange Impact |
|---|---|---|
230 |
ISO Dimension Series 230 Spherical Roller Bearing | Optimized cross-section for 220 mm bore heavy industrial shafts |
44 |
Bore Diameter Code (44 × 5 = 220 mm) | Standard cylindrical bore; tapered bore K (1:12) or K30 (1:30) available on request |
CA vs. CC |
One-piece machined brass cage (CA) with retaining ribs vs. stamped steel cage (CC) | Customer inquiry 23044CCW33C3 specifies CC/W33/C3; ZQM supplies heavy-duty machined brass cage (CA/W33) or CC/W33 per order |
W33 |
Annular oil groove and three lubrication holes in outer ring | Direct relubrication into the雙列 (double-row) roller contact zone |
C3 (on inquiry 23044CCW33C3) |
Radial internal clearance greater than Normal (C0) | Standard choice for heavy press fits, vibrating screens, drying cylinders, and high-temperature drives |
Typical Industrial Applications & Operating Conditions
With a dynamic load rating of 1,090 kN and static load rating of 1,980 kN, the 23044 CA/W33 (220×340×90 mm) is widely deployed across heavy industrial power transmission and rotating equipment:
| Industry Sector | Typical Equipment & Position | Operating Load Profile |
|---|---|---|
| Pulp & Paper Mill Machinery | Yankee dryer cylinders, press rolls, and calendar rolls requiring large bore diameter with compact radial cross-section. | Heavy radial load, combined axial load & shaft deflection |
| Large Industrial Fans & Blowers | Induced draft fans, power plant flue-gas blowers, and tunnel ventilation rotors operating under combined radial and axial loads. | Heavy radial load, combined axial load & shaft deflection |
| Marine Propulsion & Offshore Winches | Intermediate propeller shaft plummer blocks, mooring winches, and heavy deck machinery. | Heavy radial load, combined axial load & shaft deflection |
| Rotary Kilns & Tube Mills | Support rollers and girth gear pinion assemblies in cement, lime, and mineral processing plants. | Heavy radial load, combined axial load & shaft deflection |
Clearance, Cage & Bore Configuration Options
When ordering 23044 CA/W33 or matching an RFQ for 23044CCW33C3, confirm the following configuration parameters prior to dispatch:
| Configuration Item | Available Options | Selection Guidance |
|---|---|---|
| Radial Internal Clearance | C0 (Normal) · C3 · C4 |
Specify C3 when matching 23044CCW33C3 or when mounting with heavy shaft interference fits |
| Cage Design | CA / MB (Machined Brass) · CC / E (Pressed Steel) |
Machined brass cage provides superior mechanical strength under shock, vibration, and high acceleration |
| Bore & Groove | Cylindrical Bore · K Tapered Bore + W33 Oil Groove |
Verify shaft shoulder da ≥ 234 mm, housing shoulder Da ≤ 326 mm, and fillet ra ≤ 2.5 mm |
Brand Cross-Reference & Interchangeability (23044 CA/W33 / 23044CCW33C3)
All brands listed below share identical ISO 15 boundary dimensions (220 mm × 340 mm × 90 mm), while suffix letters vary by manufacturer internal design and cage/clearance code:
| Brand / Standard | Equivalent Designation | Design & Suffix Notes |
|---|---|---|
| ZQM Bearings | 23044 CA/W33 / 23044 CA/W33 C3 | Machined brass cage; available in C0 or C3 clearance |
| Customer Inquiry Code | 23044CCW33C3 | Direct dimensional interchange (220×340×90 mm); C3 radial clearance |
| SKF | 23044 CC/W33 / 23044 CC/W33 C3 (23044CCW33C3) | SKF Explorer series equivalent |
| FAG / Schaeffler | 23044-E1A-XL-M-C3 / 23044-MB-W33 | X-life / standard machined brass cage design |
| NSK | 23044CAME4 / 23044CAME4 C3 | High-capacity machined brass cage specification |
| NTN | 23044B / 23044EMD1C3 | Heavy-duty industrial specification |
| Timken | 23044YMW33C3 / 23044CJW33 | Brass cage heavy industrial series |
Procurement & Pre-Order Verification Checklist
To receive a fast, accurate quotation from ZQM Bearings for 23044 CA/W33 (or 23044CCW33C3), please include the following details in your inquiry:
| Verification Item | Required Information | Why It Matters |
|---|---|---|
| 1. Exact Designation & Suffix | State 23044 CA/W33 or 23044CCW33C3 (confirm C0 vs. C3 clearance) |
Ensures internal radial clearance and cage type match your operating temperature and fit |
| 2. Order Quantity & Usage | Batch quantity (e.g., trial order, MRO replacement, or scheduled OEM delivery) | Allows us to allocate production/stock batches and optimize export crate packaging (unit mass: 29.7 kg) |
| 3. Inspection & Documentation | Dimensional inspection report, material certificate, or clearance test sheet | Available upon request prior to shipment for quality verification |
| 4. Destination & Incoterms | Target port/country and preferred terms (EXW, FOB, CIF, or air/express freight) | Enables accurate freight calculation and lead-time confirmation |
Frequently Asked Questions (23044 CA/W33 / 23044CCW33C3)
Q1: Can ZQM 23044 CA/W33 replace 23044CCW33C3 directly?
Yes. Both share the exact ISO boundary dimensions of 220 mm × 340 mm × 90 mm. When your inquiry or equipment manual specifies 23044CCW33C3, simply request 23044 CA/W33 with C3 radial clearance (or specify whether you prefer the heavy-duty CA machined brass cage or CC pressed steel cage) so both mounting dimensions and internal operating clearance are 100% matched.
Q2: What are the exact mounting shoulder and fillet dimensions for 23044 CA/W33?
According to our controlled engineering database, the minimum chamfer dimension r1,2 min is 3 mm, maximum shaft/housing fillet radius ra max is 2.5 mm, minimum shaft abutment diameter da min is 234 mm, and maximum housing abutment diameter Da max is 326 mm.
Q3: What is the unit weight of 23044 CA/W33 for freight calculation?
The catalog reference mass of a single 23044 CA/W33 bearing is 29.7 kg (excluding export wooden case or pallet weight).
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