Product Overview
The 104-1390-006 is the large-displacement flagship model in the Eaton/Char-Lynn 2000 Series of low-speed high-torque geroler hydraulic motors, featuring a geometric displacement of 306.6 cm³/rev (18.71 in³/rev) with Geroler roller-stator and disc valve distribution. As a standard mount motor in the 2000 Series, it features a 4-bolt mounting flange (82.6 mm pilot diameter), 32 mm straight keyed output shaft, 205 bar continuous working pressure, and 765 N·m continuous output torque with 885 N·m intermittent torque capability.
The 2000 Series is officially described by Eaton as the “lowest pressure drop motor in the industry,” employing a three-zone pressure design ensuring identical performance in both forward and reverse rotation. The cast iron housing provides excellent rigidity and durability, and the standardized 4-bolt mounting flange with 32 mm straight shaft configuration allows flexible adaptation to various drive requirements.
This motor is a direct drop-in replacement for Eaton/Char-Lynn 2000 Series OEM motors of matching specification, with fully interchangeable mounting flange, shaft, and port locations. Every unit undergoes 100% simulated load-condition bench testing before shipment.
Series Model Notes: This batch covers multiple Char-Lynn H Series, 2000 Series, and T Series models, spanning spool valve and disc valve technology architectures:
101-1010-009: H Series spool valve motor, 74 cm³/rev (4.50 in³/rev), 1800 psi continuous, 1044 in-lb (118 N·m) continuous torque, 165 bar intermittent, 760 rpm max @ 15 gal/min, 4-bolt SAE flange, 7/8-14 SAE O-ring ports, cast iron housing, weight approx. 5.0 kg
101-1857-009: H Series spool valve motor, 96 cm³/rev (5.90 in³/rev), 1800 psi continuous, 1368 in-lb (approx. 155 N·m) continuous torque, 385 rpm max @ 15 gal/min, 4-bolt flange (1.75 in pilot), matches Danfoss MH0059BA08AA
104-1390-006: 2000 Series disc valve motor, 306.6 cm³/rev, 205 bar continuous, 765 N·m continuous torque, 885 N·m intermittent, 4-bolt standard flange (82.6 mm pilot), 32 mm straight keyed shaft, G 1/2 BSP ports, weight approx. 11.3 kg
158-1029-039: T Series spool valve motor, optimized geometry with lower drive running angle for improved low-speed performance and life. T Series displacement range 36-370 cm³/rev, max continuous pressure 155 bar, intermittent 190 bar, max continuous torque 430 N·m, intermittent 486 N·m, max speed 1021 rpm, continuous flow 38-57 L/min, intermittent 38-76 L/min. Parking brake available (185- prefix)
Technical Specifications
104-1390-006 (2000 Series)
Model: 104-1390-006 (Eaton/Char-Lynn 2000 Series)
Series: 2000 Series; Standard Mount Motor
Displacement: 306.6 cm³/rev (18.71 in³/rev)
Continuous Working Pressure: 205 bar
Intermittent Working Pressure: 240 bar
Max Continuous Output Torque: 765 N·m
Max Intermittent Output Torque: 885 N·m
Max Flow: 75 L/min
Control Type: Disc valve distribution; bidirectional rotation; speed infinitely adjustable via hydraulic flow
Mounting Flange: 4-bolt standard, 82.6 mm (3.25 in) pilot diameter, 13.59 mm (0.535 in) mounting holes on 106.4 mm (4.19 in) bolt circle
Output Shaft: 32.00 mm (1.260 in) straight keyed (9.982×7.995×45.00 mm), M8×1.25-6H threaded hole in end
Port Size: G 1/2 BSP straight thread ports, staggered
Case Drain: G 1/4 BSP straight thread port
Material: Cast iron housing, primer low gloss black
Weight: Approx. 11.3 kg
Model Code: M02187AH16AG0200010000000ABAAF
Data source: Eaton PowerSource official product page (eatonpowersource.com) and Hidraoil distributor technical data. Simultaneous operation at maximum speed and maximum pressure is not permitted.
101-1010-009 (H Series)
Model: 101-1010-009 (Eaton/Char-Lynn H Series)
Series: H Series; Spool Valve Motor
Displacement: 74 cm³/rev (4.50 in³/rev)
Continuous Working Pressure: 1800 psi (124 bar)
Intermittent Max Pressure: 165 bar
Max Inlet Pressure: 2500 psi
Continuous Output Torque: 1044 in-lb (118 N·m)
Intermittent Output Torque: 1401 in-lb
Max Speed: 760 rpm @ 15 gal/min
Max Flow: 57 L/min (15 gal/min)
Control Type: Spool valve distribution integrated into output shaft; bidirectional rotation
Mounting Flange: 4-bolt standard, 44.45 mm (1.75 in) pilot diameter, 82.55 mm (3.25 in) bolt circle
Output Shaft: 25.4 mm (1 in) × 6.35 mm (1/4 in) straight with Woodruff key
Port Size: 7/8-14 UNF SAE O-ring, side ports
Bearing Type: Hydrodynamic journal bearings
Material: Cast iron housing
Weight: Approx. 5.0 kg (11.1 lb)
Applications: Agricultural augers, harvesters, seeders, industrial sweepers and floor polishers
Data source: Applied Industrial Technologies (applied.com), Motion, and Kleen-Rite Corp distributor technical data.
101-1857-009 (H Series)
Model: 101-1857-009 (Eaton/Char-Lynn H Series)
Series: H Series; Spool Valve Motor
Corresponding Danfoss Model: MH0059BA08AA0000000000000AA00J
Displacement: 96 cm³/rev (5.90 in³/rev)
Continuous Working Pressure: 124 bar (1800 psi)
Intermittent Working Pressure: 165 bar (2400 psi)
Continuous Output Torque: 1368 in-lb (approx. 155 N·m)
Max Speed: 385 rpm @ 15 gal/min
Max Flow: 57 L/min (15 gal/min)
Control Type: Spool valve distribution; bidirectional rotation
Mounting Flange: 4-bolt flange, 82.55 mm (3.25 in) pilot diameter
Output Shaft: 25.4 mm (1 in) straight
Material: Cast iron housing
Data source: Motion and importtehsnab distributor technical data.
158-1029-039 (T Series)
Model: 158-1029-039 (Eaton/Char-Lynn T Series)
Series: T Series; Spool Valve Motor
Displacement: Reference T Series 080 (80 cm³/rev) or 157 specification
Continuous Working Pressure: 155 bar (2250 psi)
Intermittent Working Pressure: 190 bar (2750 psi)
Max Continuous Output Torque: 430 N·m
Max Intermittent Output Torque: 486 N·m
Max Speed: 1021 rpm
Continuous Flow: 38-57 L/min
Intermittent Flow: 38-76 L/min
Control Type: Spool valve distribution with integrated shaft valving and journal bearings; bidirectional rotation
Technical Features: Optimized geometry with lower drive running angle for improved low-speed performance and life; improved housing and smaller diameter end cap for increased envelope rigidity and improved efficiency under high pressure loads
Mounting: Multiple mounting types, shafts, and seal options
Optional Configuration: Parking brake (185- prefix)
Data source: Hydraulics Online distributor technical data and Eaton T Series official product page. Consult the Eaton PowerSource official product page for specific displacement configuration.
Key Technical Advantages
1. Industry-Lowest Pressure Drop Disc Valve Technology (2000 Series)
The 104-1390-006 employs the signature Char-Lynn disc valve architecture, officially described by Eaton as the “lowest pressure drop motor in the industry.” The valve plate and rotor end face feature automatic wear compensation, maintaining tight contact over extended service life. Compared to conventional shaft-distribution designs, the disc valve structure significantly reduces throttling losses during oil distribution. The three-zone pressure design ensures identical performance in forward and reverse rotation, with no reversal shock or torque asymmetry.
2. Spool Valve Distribution with Integrated Shaft Valving (H and T Series)
The 101-1010-009, 101-1857-009, and 158-1029-039 employ spool valve distribution with the valve integrated into the output shaft. The H Series uses hydrodynamic journal bearings optimized for long life, distributing pressurized fluid via integrated valve slots into the Gerotor or Geroler orbit gear set. This integrated structure reduces part count and potential leakage paths compared to conventional separate valve plate designs, while improving distribution precision.
3. T Series Optimized Geometry with Increased Envelope Rigidity
The 158-1029-039 belongs to the T Series, featuring optimized geometry with a lower drive running angle for improved low-speed performance and extended life. The improved housing and smaller diameter end cap increase envelope rigidity, maintaining high efficiency under high pressure loads. The T Series is available in 11 displacements from 36 to 370 cm³/rev, with maximum speeds up to 1021 rpm — the highest-speed spool valve motor series in the Char-Lynn lineup.
4. Cast Iron Housing and High Power Density
All series feature cast iron housings for excellent rigidity and durability. The 104-1390-006 delivers 765 N·m of continuous torque at 306.6 cm³/rev displacement. The 101-1010-009 delivers 118 N·m of continuous torque at only 5.0 kg weight, demonstrating an extremely high power-to-weight ratio. Standardized mounting flanges and multiple shaft options allow flexible adaptation across different drive requirements.
Application Areas
Agricultural Machinery: Agricultural augers, harvesters, seeders (101-1010-009, 101-1857-009), combine reel drives, sprayers (158-1029-039)
Construction Equipment: Excavator swing drives, skid-steer attachment drives, concrete mixer drives (104-1390-006)
Material Handling: Conveyor drives, winch and hoist mechanisms, forklift attachment drives (101-1857-009)
Municipal & Environmental Equipment: Street sweeper brush drives, snow removal auger drives, industrial sweepers and floor polishers (101-1010-009)
Industrial Drives: Specialty production line rotary mechanisms, food processing equipment drives, aerial work platform swing drives
Expert Maintenance Tips
Installation Guidelines:
Before installation, verify system oil cleanliness meets ISO 18/13 or NAS Class 9 or better. The disc valve face is sensitive to particulate contamination — install a 10μm filter upstream of the motor inlet.
The 104-1390-006 uses a 32 mm straight keyed shaft with M8 threaded end. Ensure proper fit precision between the key and equipment-side keyway. Shaft alignment must be within 0.05mm using a flexible coupling. Ensure reliable sealing at G 1/2 BSP ports during installation.
The 101-1010-009 and 101-1857-009 use 25.4 mm straight shafts with Woodruff keys and 4-bolt flanges (1.75 in or 3.25 in pilot). Note port orientation compatibility with hydraulic line connections during installation.
The 158-1029-039 (T Series) uses spool valve distribution with integrated shaft valving, which is more contamination-tolerant than disc valve designs, but maintaining system cleanliness at NAS Class 9 or better is still recommended.
During initial commissioning for all models, run at no more than 30% of rated pressure for at least 30 minutes of no-load break-in.
Operational Maintenance:
Normal operating oil temperature should not exceed 82°C (180°F). The recommended maximum system working temperature for the 101-1010-009 is 180°F (82°C).
Use premium anti-wear hydraulic oil with viscosity maintained at 100 SSU (Saybolt Universal Seconds) or 20-43 cSt at operating temperature.
Inspect volumetric efficiency every 2,000 hours or every 12 months. If efficiency drops by more than 10% of rated value, disassemble and inspect the valve plate (2000 Series) or spool valve assembly (H/T Series) and rotor-stator set.
The H Series (101-1010-009, 101-1857-009) hydrodynamic journal bearings are designed for long life and require no frequent maintenance, but bearing clearance should be periodically inspected under continuous high-load conditions.
