H 3044X FAG Adapter Sleeve 200x220x126 mm for Tapered Bore

What Is the H 3044X FAG Adapter Sleeve?

H 3044X FAG is a mechanical adapter sleeve designed for mounting rolling bearings with a 1:12 tapered bore onto cylindrical shaft seats. It is intended for a 200 mm shaft diameter, while the nominal bearing bore diameter is 220 mm. The sleeve has a length of 126 mm and a Tr220x4 thread. This mounting solution allows large tapered bore bearings to be securely installed without machining a tapered seat directly onto the shaft.

Technical Specification

Manufacturer: FAG / Schaeffler

Designation: H 3044X / H3044X

Product Type: Adapter Sleeve

Design: Mechanical

Shaft Diameter d1: 200 mm

Nominal Bearing Bore d: 220 mm

Sleeve Length B1: 126 mm

Thread: Tr220x4

Taper: 1:12

Nut Outside Diameter d2: 260 mm

Lock Nut: HM3044

Locking Device: MS3044

Weight: approximately 10.7 kg

EAN: 4012801216937

These dimensions and mounting components are specified in the technical data for FAG H3044X.

What Is the H3044X Adapter Sleeve Used For?

The primary function of the FAG H3044X is to mount a bearing with a tapered bore onto a straight cylindrical shaft.

During installation, the bearing is driven progressively onto the tapered surface of the sleeve. This creates the required interference fit between the bearing inner ring, sleeve and shaft.

Typical applications include:

• Heavy industrial machinery
• Conveyor systems
• Crushers
• Industrial fans
• Processing machinery
• Mining equipment
• Material handling systems
• Industrial drive systems
• Production equipment
• Maintenance and repair operations

H3044X for 23044 K Bearings

The H3044X adapter sleeve is associated with suitable 23044 K series spherical roller bearings with tapered bores. Schaeffler documentation lists H3044X for 23044..-K bearing arrangements.

The complete bearing designation should always be checked before installation because internal clearance, bearing execution and application requirements can differ.

1:12 Taper

The H 3044X FAG features a 1:12 tapered surface.

When a tapered bore bearing is driven onto the sleeve, the bearing inner ring expands slightly. This reduces the radial internal clearance of the bearing.

For this reason, correct installation requires control of:

• Bearing drive-up distance
• Reduction in radial internal clearance
• Final bearing position
• Required operating clearance

Excessive drive-up can reduce bearing clearance too far and negatively affect operating temperature and bearing life.

Tr220x4 Thread

The H3044X uses a Tr220x4 trapezoidal thread. This is an important identification parameter when selecting the sleeve and its corresponding mounting components.

The sleeve should not be identified solely by its 200 mm shaft diameter, especially in large industrial bearing arrangements.

HM3044 Lock Nut and MS3044 Locking Device

The standard mechanical H3044X arrangement uses:

Lock Nut: HM3044

Locking Device: MS3044

These components are specified for the H3044X configuration in the technical product data.

The nut is used to drive and secure the bearing on the tapered sleeve, while the locking device prevents unwanted loosening during operation.

Advantages of the H 3044X FAG Adapter Sleeve

The H3044X provides several practical engineering advantages:

• Mounting tapered bore bearings on cylindrical shafts
• No tapered shaft seat required
• Simplified shaft machining
• Secure positioning of large rolling bearings
• Controlled bearing drive-up
• Convenient bearing installation
• Easier maintenance and replacement
• Suitable for heavy industrial bearing arrangements

Applications in Heavy Machinery

With a 200 mm shaft diameter, the H3044X belongs to the range of large adapter sleeves intended for substantial industrial bearing arrangements.

It can be used in equipment such as:

• Large conveyors
• Crushers and screening equipment
• Industrial ventilation systems
• Processing machines
• Material handling equipment
• Heavy drive systems
• Production machinery

The actual application depends on the bearing selected and the loads, speeds and environmental conditions of the machine.

Installation Recommendations

Before installing the H3044X:

• Clean the shaft surface
• Clean the adapter sleeve
• Inspect the tapered bearing bore
• Remove corrosion and contamination
• Verify the complete bearing designation
• Check the required radial internal clearance
• Confirm the correct lock nut and locking device
• Follow the bearing manufacturer's drive-up procedure

For spherical roller bearings, correct reduction of radial internal clearance is particularly important.

Frequently Asked Questions (FAQ)

What shaft diameter is the H3044X FAG designed for?
It is designed for a 200 mm cylindrical shaft.

What is the nominal bearing bore diameter?
The corresponding nominal tapered bearing bore diameter is 220 mm.

What is the length of the H3044X?
The sleeve length B1 is 126 mm.

What thread does the H3044X use?
It uses a Tr220x4 thread.

What taper does the H3044X have?
The tapered sleeve surface has a 1:12 taper.

Frequently Asked Questions from Engineers and Mechanics

Which lock nut is used with H3044X?
The specified lock nut is HM3044.

Which locking device is used with H3044X?
The corresponding locking device is MS3044.

Can H3044X be used with a 23044 K spherical roller bearing?
Yes. Schaeffler documentation specifies H3044X for appropriate 23044..-K tapered bore bearing arrangements.

Is H3044X intended for cylindrical bore bearings?
No. Its purpose is to mount bearings with a tapered bore onto a cylindrical shaft.

Is checking the 200 mm shaft diameter enough?
No. The bearing designation, 220 mm nominal tapered bore, 1:12 taper, Tr220x4 thread and required mounting components should also be verified.

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