• 3/4bsp M/F Extended Nipple
    Regular price £26.15
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    3/4bsp M/F Extended Nipple

    Key Features

    • Thread: 3/4" BSP male to 3/4" BSP female
    • Length: extended body for clearance
    • Material: plated steel hydraulic fitting
    • Use: offsets hoses away from rotating structures
    • Rating: typical 350–420 bar service class
    Regular price £26.15
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  • 3/8 BSP male/ female extension (pair 62mm long) - Approved Hydraulics Limited
    Regular price £4.28
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    3/8 BSP male/ female extension (pair 62mm long)

    Key Features

    • Type: male ; female extension nipple
    • Thread: 3/8" bspp
    • Length: 62 mm
    • Use: stand off spacing for pipework
    • Application: hydraulic system component
    Regular price £4.28
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  • Balt GR 55 M hose guard
    Regular price £43.88
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    Balt GR 55 M hose guard

    Key Features

    • Type: hose guard
    • Compatibility: baltrotors gr series
    • Use: protects hoses at rotator body
    • Mounting: bolt on plates
    • Application: hydraulic system component
    Regular price £43.88
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  • BALTGRS16S Rotator

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    BALTGRS16S Rotator

    Key Features

    • Type: GRS16S grapple-saw rotator with extra channels
    • Upper connection: fork 100.5 mm; 45 mm pin (GRS family)
    • Rotation: unlimited; double bearing construction
    • Max oilflow: ~40 L/min class (GRS16 family)
    • Use: saw grapples needing additional hydraulic lines

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
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  • Adam Hindle

    Sales Director

    I began my engineering career at Stockport College in around 2005, first completing a National Diploma in Electrical Engineering, followed by a Higher National Diploma in Mechanical Engineering. I then progressed to the University of Salford, where I earned a BEng (Hons) degree in Mechanical Engineering.

    After graduating, I started my professional career with Approved Hydraulics. I initially gained a combination of hands-on workshop experience and telephone-based sales experience. In later years, I moved into a full-time sales role and led the new crane and excavator attachments department that the company had recently established.

  • Baltrotor Gr30 Hose guard
    Regular price £36.06
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    Baltrotor Gr30 Hose guard

    Key Features

    • Type: replacement hose guard for GR30 pendant rotators
    • Mounting: bolts to top plate/stator
    • Benefit: shields hoses from abrasion and debris
    • Use: forestry and material handling cranes
    • Material: steel guard with serviceable fasteners
    Regular price £36.06
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  • Out of Stock
    Baltrotors Steel Sleeve - 25mm Bush Assembly Complete (Pair) - Approved Hydraulics Limited
    Regular price £240.06
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    Baltrotor Steel Sleeve - 28mm Bush Assy Complete (Pair)

    Key Features

    • Component: steel sleeve bush set for link/rotator joints
    • Bore size: 28 mm internal diameter
    • Supply: supplied as a matched pair with sleeves and bushes
    • Use: renew worn joints to restore tight clearances
    • Material: hardened steel for wear resistance
    Regular price £240.06
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  • Baltrotors Steel Sleeve - 25mm Bush Assembly Complete (Pair) - Approved Hydraulics Limited
    Regular price £53.40
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    Baltrotor Steel Sleeve - 30mm Bush Assembly Complete (Pair)

    Key Features

    • Component: sleeve/bush kit with 30 mm ID
    • Supply: matched pair for both sides of link or head
    • Use: restores correct joint clearance
    • Material: hardened steel sleeves
    • Benefit: improved service life and tighter fit
    Regular price £53.40
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  • Baltrotors Steel Sleeve - 25mm Bush Assembly Complete (Pair) - Approved Hydraulics Limited
    Regular price £62.46
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    Baltrotors BR1 Bushing 28mm ID (HMF cranes)

    Key Features

    • Component: BR1 link bushing with 28 mm internal diameter
    • Compatibility: common on HMF crane link heads
    • Function: supports upper eye; reduces wear
    • Material: steel/bronze depending on variant
    • Service: periodic greasing recommended
    Regular price £62.46
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  • Baltrotors Bronze Bush - 45mm (Pair) - Approved Hydraulics Limited
    Regular price £33.53
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    Baltrotors Bronze Bush - 45mm (Pair)

    Key Features

    • Component: bronze bush pair for 45 mm pins
    • Material: oil-impregnated or tin bronze for low friction
    • Use: replacement for link heads and flanges
    • Benefit: good anti-seize properties; machinable
    • Service: grease compatible with bronze
    Regular price £33.53
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  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £33.92
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    Baltrotors CPR 8 Quad Ring Seal For Adaptor Plate

    Key Features

    • Part: quad ring seal for CPR8 adapter plate interface
    • Use: replaces sealing ring between rotator and plate
    • Compatibility: CPR8; CPR8-01 variants
    • Material: OEM spec elastomer for hydraulic oil
    • Install: light oil film; avoid twisting the ring
    Regular price £33.92
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  • Baltrotors CPR9-04ST Rigid Rotator With Holding Brake function  With 5 x Through Functions.

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    Baltrotors CPR9-04ST Rigid Rotator With Holding Brake function With 5 x Through Functions.

    Key Features

    • Type: CPR9 rigid industrial piston rotator with holding brake
    • Through functions: 5 hydraulic channels for grapple and accessories
    • Torque at 25 MPa: 3000 Nm (family datasheet)
    • Max axial load static: 90 kN; radial 70 kN (datasheet)
    • Recommended oil flow: 30 L/min; connections G 1/2 (rotation/tool)
    • Rotation: unlimited; relief valves fitted on rotation circuit

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Baltrotors GR 105 DB rotator top head
    Regular price £336.06
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    Baltrotors GR 105 DB rotator top head

    Key Features

    • Component: top head/stator plate for GR105DB rotator
    • Type: double bearing heavy-duty pendant rotator family
    • Function: mounts to crane head and carries hose guard
    • Material: machined steel; corrosion protected
    • Service: replace when worn bores or mounting damage occurs
    Regular price £336.06
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  • Baltrotors Gr30 X type hose guard
    Regular price £134.98
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    Baltrotors Gr30 X type hose guard

    Key Features

    • Type: hose guard
    • Compatibility: baltrotors gr series
    • Use: protects hoses at rotator body
    • Mounting: bolt on plates
    • Application: hydraulic system component
    Regular price £134.98
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  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £196.86
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    Baltrotors HR12SM + HR1SM6 rotator seal kit

    Key Features

    • Compatibility: HR12SM; HR16SM; HR12US; HR16U harvester rotators
    • Contents: full dynamic seal pack including O-rings and shaft seals
    • Function: overhaul swivel and head sealing surfaces
    • Use: restore pressure integrity and stop external leakage
    • Install: lubricate seals and assemble per OEM manual
    Regular price £196.86
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  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £151.80
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    Baltrotors Seal Kit - GR104, GR105, GR110-1, GR110-2

    Key Features

    • Scope: seal kit for heavy DB rotators (104/105/110)
    • Use: service swivel and main shaft seals
    • Compatibility: GR104DB; GR105DB; GR110-1DB; GR110-2DB
    • Contents: OEM matched sealing elements
    • Note: check orientation of lip seals during assembly
    Regular price £151.80
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  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £62.46
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    Baltrotors Seal Kit - GR46, 46A, 463, 465

    Key Features

    • Scope: complete seal set for GR46 family variants
    • Includes: O-rings; shaft seals; back-ups; quad rings
    • Use: overhaul swivel and rotary seals on service
    • Compatibility: GR46; GR46A; GR463; GR465
    • Note: follow datasheet for assembly torques and oil
    Regular price £62.46
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  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £50.46
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    Baltrotors Seal kit for GR 55FF rotator

    Key Features

    • Scope: service seal kit dedicated to GR55FF
    • Includes: O-rings; quad-rings; shaft seal; gaskets
    • Use: restore sealing of rotator and swivel
    • Compatibility: GR55FF flat-top variant
    • Packaging: manufacturer matched components
    Regular price £50.46
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  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £47.24
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    Baltrotors Seal Kit for GR 55M 46/68M GR46/69M GR465/68M

    Key Features

    • Compatibility: GR55M; GR46/68M; GR46/69M; GR465/68M rotators
    • Contents: O-rings; quad rings; shaft seals; backups
    • Function: restores sealing of swivel and main shaft assemblies
    • Material: OEM spec elastomers for hydraulic oil service
    • Use: stop external leaks and recover pressure integrity
    Regular price £47.24
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £150.06
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    Baltrotors Seal Kit GR12S & GR16S

    Key Features

    • Scope: seal pack for double bearing GR12S and GR16S
    • Use: overhaul bearing housing and swivel seals
    • Typical torque: per datasheet; replace all dynamic seals
    • Includes: O-rings; quad-rings; shaft/seal carriers
    • Models: GR12S; GR16S
    Regular price £150.06
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £114.06
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    Baltrotors Seal kit GR60, GR60DB, GR60/69,GR603, GR603- New type

    Key Features

    • Scope: service seals for GR60 and GR603 families
    • Models covered: GR60; GR60DB; GR60/69; GR603; GR603-2
    • Use: rebuild swivel/rotary seals; stop external leaks
    • Contents: model-specific O-rings; shaft seals; backups
    • Note: verify port threads G 1/2 and install per manual
    Regular price £114.06
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  • Baltrotors Steel Sleeve - 25mm Bush Assembly Complete (Pair) - Approved Hydraulics Limited
    Regular price £53.40
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery

    Baltrotors Steel Sleeve - 25mm Bush Assembly Complete (Pair)

    Key Features

    • Component: sleeve/bush kit ID 25 mm
    • Supply: pair for both sides of joint
    • Material: hardened steel for wear resistance
    • Use: crane head/link refurb
    • Service: grease on install
    Regular price £53.40
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Baltrotors Steel Sleeve - 25mm Bush Assembly Complete (Pair) - Approved Hydraulics Limited
    Regular price £53.40
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery

    Baltrotors Steel Sleeve - 35mm Bush Assembly Complete (Pair)

    Key Features

    • Component: sleeve/bush kit ID 35 mm
    • Supply: pair for both sides
    • Use: renew link or head bores for 35 mm pins
    • Material: hardened steel sleeves
    • Benefit: reduces play and vibration
    Regular price £53.40
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  • Baltrotors Steel Sleeve - 25mm Bush Assembly Complete (Pair) - Approved Hydraulics Limited
    Regular price £54.60
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    • Delivery to UK & Ireland
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    Baltrotors Steel Sleeve - 40mm Bush Assembly Complete (Pair)

    Key Features

    • Component: sleeve/bush kit with 40 mm ID
    • Supply: matched pair
    • Material: hardened steel sleeves and bushes
    • Use: link and rotator joint refurbishment
    • Benefit: restores correct tolerances
    Regular price £54.60
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Baltrotors Steel Sleeve - 25mm Bush Assembly Complete (Pair) - Approved Hydraulics Limited
    Regular price £21.54
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    BR1 - Baltrotor Steel Sleeve - 20mm Bush Assy Complete (Pair)

    Key Features

    • Component: sleeve/bush pair for BR1 link upper eye
    • Bore size: 20 mm
    • Supply: complete pair for both sides
    • Material: hardened steel sleeves with bushes
    • Use: renew wear surfaces and restore fit
    Regular price £21.54
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery

Baltrotors

Approved Hydraulics Ltd are proud to be the sole UK agent for Baltrotors Hydraulic Rotators. Baltrotors offer one of the largest ranges in hydraulic rotators available in the market place, covering, pendant rotators, rigid rotators, harvester head rotators, industrial rotators and saw grapple rotators along with a complete range of standard and braked links.

They are also the only manufacture to offer a 2 year warranty as standard across the complete “GR” range of hydraulic rotators.

Most units available from stock for next day delivery!

Common Calculations FAQs

Calculating force, speed, pressure, power, and efficiency in hydraulic applications.

How do you calculate actuator speed?

Actuator speed is determined by flow rate and cross-sectional area:

Speed = Flow rate ÷ Area

Flow rate is the volume of fluid delivered (in L/min or GPM).

Area is the cross-sectional area of the actuator piston: π × (diameter ÷ 2)².

How do you calculate cylinder force?

Cylinder force can be calculated using:

Force = Pressure × Area

Pressure is the system pressure (in psi or bar).

Area is the cross-sectional area of the cylinder bore (in square inches or square centimeters).

Area = π × (bore diameter ÷ 2)².

How do you calculate pressure drop across a valve?

Pressure drop can be calculated using the valve flow coefficient (Cv):

Pressure Drop (ΔP) = (Flow Rate)² ÷ (Cv² × Fluid Density)

Flow Rate is the fluid flow (in GPM or L/min).

Cv is the valve flow coefficient.

Fluid Density is the density of the hydraulic fluid.

How do you size an accumulator?

Accumulator sizing considers required flow, pressure, and pre-charge:

Accumulator Volume = Flow Rate × Time ÷ Pressure

This determines how much fluid must be stored to maintain system pressure.

How to convert psi to bar?

Use the conversion factor: 1 bar = 14.5 psi.

To convert psi to bar, divide psi by 14.5.

Example: 200 psi ÷ 14.5 = 13.79 bar.

What is pre-charge pressure in an accumulator?

Pre-charge pressure is the initial gas pressure in the accumulator before fluid enters.

It helps maintain system pressure as the accumulator discharges.

Typically set to 70–80% of system operating pressure.

What is specific gravity of hydraulic fluid?

Specific gravity is the ratio of hydraulic fluid density to water.

A value of 1 means equal density.

Less than 1 means the fluid floats; greater than 1 means it sinks.

What is torque in a hydraulic motor?

Torque is the rotational force produced based on system pressure and motor displacement:

Torque = Pressure × Displacement ÷ 2π

Pressure is the operating system pressure.

Displacement is the volume displaced per revolution (in cubic inches or cubic centimeters).

What unit is hydraulic power measured in?

Hydraulic power is measured in horsepower (HP) or kilowatts (kW).

Hydraulic horsepower can be calculated using:

HP = (Pressure (psi) × Flow rate (GPM)) ÷ 1714.

What’s the relationship between pump speed and flow?

Flow rate is directly proportional to pump speed.

If pump speed doubles, flow rate doubles (assuming constant displacement).

This is important when adjusting flow or selecting a pump for varying speeds.