105-1139-006 Danfoss Char-Lynn 2000 Series Motor

Product Overview

The Danfoss Char-Lynn 2000 Series is a proven LSHT Geroler orbital hydraulic motor platform designed for mobile and industrial hydraulic applications requiring compact packaging, reliable torque transmission and low-speed operation.

Danfoss PowerSource currently classifies these motors under:

Mobile Motors → Low-Speed High-Torque Motors → Orbital Motors → Char-Lynn Motors → 2000 Series

and provides detailed product configuration records for individual legacy part numbers.

The requested part numbers are:

• 105-1139-006
• 105-1075-006
• 105-1076-006

The three motors share the 2000 Series architecture but are not mechanically identical.

The official configuration for 105-1139-006 is:

• 244.3 cm³/rev displacement
• Wheel motor
• 4-bolt wheel mounting
• Ø32 mm straight shaft
• G1/2 BSP side ports
• G1/4 drain
• Front and rear tapered roller bearings
• Standard NBR shaft seal
• Integrated check valve

The official configuration for 105-1075-006 is a 194.8 cm³/rev wheel motor with a 1-1/4 inch tapered SAE J501 shaft, 1-1/16-12 SAE O-ring ports and tapered roller bearings.

The official configuration for 105-1076-006 is a 244.3 cm³/rev wheel motor with the same general tapered-shaft architecture, 1-1/16-12 SAE O-ring ports and tapered roller bearings.

Technical Specifications

105-1139-006

• Brand: Danfoss
• Sub-brand: Char-Lynn
• Product Series: 2000 Series
• Product Type: LSHT Geroler Orbital Hydraulic Motor
• Part Number: 105-1139-006
• Model Code: M02149AB16AG0200010000000ABAAF
• Motor Size: 245
• Geometric Displacement: 244.3 cm³/rev
• Displacement: 14.91 in³/rev
• Motor Type: Wheel
• Motor Function: Standard
• Mounting: 4-Bolt Wheel
• Front Pilot: 108.0 × 6.4 mm
• Bolt Circle: 147.6 mm
• Rear Pilot: 127.0 × 3.3 mm
• Shaft Type: Straight
• Shaft Diameter: 32 mm
• Shaft-End Thread: M8 × 1.25-6H
• Shaft Key: 10 × 8 × 45 mm rectangular key
• Port Thread: BSP
• Port Style: Staggered side ports
• Main Port: G1/2
• Drain Port: G1/4
• Front Bearing: Tapered roller bearing
• Rear Bearing: Tapered roller bearing
• Shaft Seal: NBR standard
• Dust Seal: Standard
• Check Valve: Yes
• Hydraulic Valve Function: None
• Sensor: None
• Paint: Low-gloss black primer
• Overall Height: 134.112 mm
• Overall Length: 203.962 mm
• Overall Width: 134.112 mm
• Seal Kit: 9900684-000
• Design Code: 06

105-1075-006

• Brand: Danfoss
• Sub-brand: Char-Lynn
• Product Series: 2000 Series
• Product Type: LSHT Geroler Orbital Hydraulic Motor
• Part Number: 105-1075-006
• Model Code: M02119AB03AF0100010000000AAAAF
• Motor Size: 195
• Geometric Displacement: 194.8 cm³/rev
• Displacement: 11.89 in³/rev
• Motor Type: Wheel
• Mounting: 4-Bolt Wheel
• Front Pilot: 108.0 × 6.4 mm
• Bolt Circle: 147.6 mm
• Rear Pilot: 127.0 × 3.3 mm
• Shaft Type: Tapered
• Shaft: 1-1/4 inch, 1:8 SAE J501
• Shaft-End Thread: 1-20 UNEF-2A
• Shaft Key: 5/16 × 1 inch square key
• Main Port: 1-1/16-12 UN-2B SAE O-ring
• Drain Port: 7/16-20 UNF-2B SAE O-ring
• Front Bearing: Tapered roller bearing
• Rear Bearing: Tapered roller bearing
• Shaft Seal: NBR standard
• Dust Seal: Standard
• Check Valve: Yes
• Hydraulic Valve Function: None
• Sensor: None
• Paint: No paint
• Seal Kit: 61258-000
• Overall Height: 134.112 mm
• Overall Length: 218.186 mm
• Overall Width: 134.112 mm
• Design Code: 06

105-1076-006

• Brand: Danfoss
• Sub-brand: Char-Lynn
• Product Series: 2000 Series
• Product Type: LSHT Geroler Orbital Hydraulic Motor
• Part Number: 105-1076-006
• Model Code: M02149AB03AF0100010000000AAAAF
• Motor Size: 245
• Geometric Displacement: 244.3 cm³/rev
• Displacement: 14.91 in³/rev
• Motor Type: Wheel
• Mounting: 4-Bolt Wheel
• Front Pilot: 108.0 × 6.4 mm
• Bolt Circle: 147.6 mm
• Rear Pilot: 127.0 × 3.3 mm
• Shaft Type: Tapered
• Shaft: 1-1/4 inch, 1:8 SAE J501
• Shaft-End Thread: 1-20 UNEF-2A
• Shaft Key: 5/16 × 1 inch square key
• Main Port: 1-1/16-12 UN-2B SAE O-ring
• Port Style: Side ports, 180° apart
• Drain Port: 7/16-20 UNF-2B SAE O-ring
• Front Bearing: Tapered roller bearing
• Rear Bearing: Tapered roller bearing
• Shaft Seal: NBR standard
• Dust Seal: Standard
• Check Valve: Yes
• Hydraulic Valve Function: None
• Sensor: None
• Paint: No paint
• Seal Kit: 61258-000
• Overall Height: 134.112 mm
• Overall Length: 203.962 mm
• Overall Width: 134.112 mm
• Design Code: 06

Performance Data Verification Note

To maintain strict engineering accuracy, the current public Danfoss PowerSource records reviewed for these three exact part numbers do not expose a complete individual performance table for continuous pressure, intermittent pressure, maximum speed and torque in the visible product specification fields. They do directly verify displacement and the complete mechanical/hydraulic configuration.

Therefore, those performance values are intentionally not fabricated or transferred from another 2000 Series configuration.

The officially documented architecture is:

• Disc Valve with Valve Drive
• Geroler Orbital Gearwheel Set
• Fixed-displacement LSHT motor
• Check valve function
• Single-speed configuration for these specific model codes

Danfoss separately documents a 2000 Series two-speed option, using a 1:2 displacement relationship and an external three-way pilot-control valve to shift between LSHT and HSLT modes.

Control Method

The 2000 Series uses a fixed-displacement Geroler orbital motor architecture.

The basic engineering relationship is:

Hydraulic Flow → Motor Speed

Differential Pressure × Displacement → Available Torque

Therefore:

• Displacement: Fixed
• Speed Control: Hydraulic flow
• Torque: Differential pressure and displacement
• Rotation: Hydraulic flow direction
• Integrated Variable Displacement: Not present in the standard single-speed configuration
• Two-Speed Option: Available separately within the 2000 Series

Danfoss documentation states that its two-speed 2000 Series uses a 1:2 displacement ratio, switching from LSHT to HSLT when pilot pressure reaches the required threshold.

Key Technical Advantages

1. Geroler Orbital Technology

Danfoss’s current configuration records identify the 2000 Series motors with:

Geroler orbital gearwheel set

and:

Disc valve with valve drive.

This architecture is designed for efficient low-speed hydraulic power transmission and high torque density.

2. Wheel-Motor Architecture

The three requested configurations are specified as Wheel motors with 4-bolt wheel mounting.

This makes them particularly suitable for:

• Wheel drives
• Traction drives
• Mobile machinery
• Agricultural equipment
• Compact construction equipment

3. Tapered Roller Bearings

The exact configurations include tapered roller bearings, supporting applications where the hydraulic motor is exposed to substantial mechanical loading.

4. Different Shaft Interfaces

The three references demonstrate that equal product-family membership does not guarantee shaft compatibility.

105-1139-006:

• Ø32 mm straight shaft
• M8 × 1.25 thread
• 10 × 8 × 45 mm key

105-1075-006 / 105-1076-006:

• 1-1/4 inch tapered shaft
• 1:8 SAE J501
• 1-20 UNEF thread
• 5/16 × 1 inch key

5. Integrated Check Valve

Each of the three exact configurations specifies:

Check Valve Function: Yes.

6. Cast-Iron Housing

The 2000 Series product data identifies cast iron as the housing material, supporting demanding mobile-machine environments involving vibration, shock and mechanical loading.

7. Mobile Hydraulic Drive Optimization

Danfoss classifies Char-Lynn 2000 Series products under its low-speed, high-torque orbital-motor portfolio for mobile applications.

Application Areas

105-1139-006

• Wheel drives
• Agricultural machinery
• Mobile hydraulic equipment
• Harvesting machinery
• Brush cutters
• Mowers
• Material handling equipment
• Compact construction equipment

Public Danfoss/Char-Lynn product references specifically associate the 2000 Series with swing motors, brush cutters/mowers and harvesting equipment.

105-1075-006

• Wheel drives
• Traction systems
• Agricultural machinery
• Harvesting equipment
• Brush cutters
• Mowers
• Mobile machinery

105-1076-006

• Heavy mobile machinery
• Wheel drives
• Agricultural equipment
• Harvesting machinery
• Brush cutters
• Mowers
• Hydraulic rotary drives

The broader 2000 Series is documented for demanding mobile applications including swing and agricultural equipment.

Expert Maintenance Tips

1. Match the Exact Part Number

Replacement selection should be based on:

105-1139-006
105-1075-006
105-1076-006

rather than simply ordering a “Char-Lynn 2000 Series motor.”

Configuration differences include displacement, shaft, mounting, porting, drain and bearing arrangement.

2. Do Not Treat Equal Displacement as Full Interchangeability

Both 105-1139-006 and 105-1076-006 use 244.3 cm³/rev, but:

• 105-1139-006 uses a Ø32 mm straight shaft and G1/2 BSP ports.
• 105-1076-006 uses a 1-1/4 inch tapered shaft and SAE O-ring ports.

Therefore, hydraulic displacement alone does not establish mechanical interchangeability.

3. Distinguish the 194.8 and 244.3 cm³/rev Versions

105-1075-006 = 194.8 cm³/rev

105-1076-006 = 244.3 cm³/rev

At the same hydraulic flow, the two motors will operate at different theoretical speeds.

4. Inspect the Tapered Shaft Carefully

For 105-1075-006 and 105-1076-006, verify:

• 1:8 SAE J501 taper
• Shaft-end thread
• Key geometry
• Hub engagement
• Shaft concentricity

5. Verify Wheel-Mounting Geometry

Check:

• Pilot diameter
• Pilot height
• Bolt circle
• Mounting-hole diameter
• Wheel-hub interface

before installation.

6. Match the Drain Connection

The exact drain configurations are:

• 105-1139-006: G1/4
• 105-1075-006: 7/16-20 UNF SAE O-ring
• 105-1076-006: 7/16-20 UNF SAE O-ring

7. Maintain Hydraulic Fluid Cleanliness

Routine service should monitor:

• Hydraulic-fluid cleanliness
• Filter condition
• Oil viscosity
• Oil temperature
• Return pressure
• Internal leakage

8. Perform 100% Simulated Operating-Condition Testing

For replacement Char-Lynn 2000 Series motors, our recommended factory QA program includes:

• Displacement verification
• Flow testing
• Pressure testing
• Speed verification
• Starting-torque testing
• Continuous-torque verification
• Internal-leakage testing
• Rotation-direction testing
• Drain-pressure testing
• Shaft runout inspection
• Spline/taper inspection
• Bearing inspection
• Temperature-rise testing
• Noise and vibration testing
• Complete configuration verification

For 105-1139-006, 105-1075-006 and 105-1076-006, final replacement acceptance should be based on the exact Danfoss configuration record plus the applicable historical performance documentation, rather than transferring ratings from another 2000 Series motor.