• Baltrotors BR1 Link - Approved Hydraulics
    Regular price £252.06
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    BR1 Link 70mm Wide with 20mm Top Bush

    Key Features

    • Link type: BR1 without brake; 70 mm upper width
    • Upper pin: 20 mm
    • Lower connection: eye/fork to suit grapple pin
    • Use: light/medium duty rotator suspension
    • Service: grease at 8-hour intervals
    Regular price £252.06
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  • Baltrotors BR1 Link - Approved Hydraulics
    Regular price £286.80
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    Link 25 mm to 30mm crane pin

    Key Features

    • Adaptor: sleeve converts 25 mm link to 30 mm crane pin
    • Use: compatibility when crane head pin is larger
    • Material: hardened steel for wear resistance
    • Fit: slip-in with retaining features per design
    • Note: check clearance and lubrication path
    Regular price £286.80
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  • BR2 Top Bush 35mm dia - Approved Hydraulics Limited
    Regular price £40.07
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    BR2 bottom bushing for 35mm link pin

    Key Features

    • Component: bottom bushing for BR2 link
    • Pin size: 35 mm
    • Function: supports lower eye; distributes axial load
    • Material: steel bushing; service replaceable
    • Use: restores fit and reduces wear on link assembly
    Regular price £40.07
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  • CPR/15 adaptor plate
    Regular price £158.76
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    CPR/15 adaptor plate

    Key Features

    • Type: adaptor plate for CPR15 family
    • Pattern: CPR15 bolt and pilot geometry
    • Material: precision machined steel
    • Use: rigid mounting to industrial grapples
    • Service: check gasket/O-ring groove and surface finish
    Regular price £158.76
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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.

  • CPR9-04ST Adaptor Plate
    Regular price £150.06
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    CPR9-04ST Adaptor Plate

    Key Features

    • Type: adaptor plate for CPR9-04ST rotators
    • Pattern: CPR9 bolt circle and pilot register
    • Use: mounts flat-body CPR rotator to grapple frame
    • Material: machined steel with countersunk/through holes
    • Note: verify fastener grade and torque
    Regular price £150.06
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  • GR 16S flange securing Pin - Approved Hydraulics Limited
    Regular price £52.86
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    GR 16S flange securing Pin

    Key Features

    • Compatibility: baltrotors gr16s rotator
    • Function: flange securing pin
    • Material: heat treated steel
    • Use: rotator flange retention
    • Application: hydraulic system component
    Regular price £52.86
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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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  • Locking Screw
    Regular price £21.50
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    Locking Screw

    Key Features

    • Function: locking ; set screw
    • Use: fix fittings ; accessories on grab head
    • Material: high tensile steel
    • Thread: metric per variant
    • Application: hydraulic system component
    Regular price £21.50
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  • Link Lower(ex MTR104.010-02)
    Regular price £210.06
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    Link Lower(ex MTR104.010-02)

    Key Features

    • Component: lower link assembly (legacy code MTR104.010-02)
    • Function: connects rotator lower interface to tool
    • Construction: welded/machined steel with bush seats
    • Use: service replacement for worn or damaged link
    • Note: confirm bush sizes and pin diameters before fit
    Regular price £210.06
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  • GR 46 hose guard with 4 x bolt holes
    Regular price £24.06
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    GR 46 hose guard with 4 x bolt holes

    Key Features

    • Type: hose guard for GR46-01 configuration
    • Mounting: 4-bolt pattern to top plate
    • Benefit: shields supply hoses from debris and snagging
    • Use: forestry cranes; recycling; timber handling
    • Material: steel fabrication; serviceable design
    Regular price £24.06
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  • Gr55 hose guard "X" model
    Regular price £207.40
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    Gr55 hose guard "X" model

    Key Features

    • Type: arched hose guard "X" for GR55 family
    • Benefit: enhanced abrasion protection for feed hoses
    • Mounting: bolts to upper stator/top plate
    • Use: forestry and demolition duty where hoses are exposed
    • Note: matches GR55MF/GR55FF variants with guard pattern
    Regular price £207.40
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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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  • Restrictor 0.7mm 3/8 - 3/8 Male / Male
    Regular price £6.06
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    Restrictor 0.7mm 3/8 - 3/8 Male / Male

    Key Features

    • Type: inline flow restrictor fitting
    • Orifice: 0.7 mm calibrated orifice
    • Thread: 3/8" BSP male to 3/8" BSP male
    • Function: limits cylinder/rotator speed; reduces shock
    • Material: plated steel body for hydraulic service
    Regular price £6.06
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  • KV Diverter Valve 24VDC Coil 31mm Dia hole x 42mm Long (Din Plug Connection)
    Regular price £102.49
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    KV Diverter Valve 24VDC Coil 31mm Dia hole x 42mm Long (Din Plug Connection)

    Key Features

    • Part number: HP-C5-24DC-COIL
    • Supply voltage: 24 VDC
    • Coil bore: 31 mm diameter hole
    • Coil length: 42 mm long
    • Electrical connection: DIN plug connection
    • Compatibility: KV diverter valve solenoid actuator
    • Function: Energises diverter valve to switch hydraulic flow path
    Regular price £102.49
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  • Banjo Tubes - Approved Hydraulics Limited
    Regular price £25.93
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    1/4" Banjo Body To 12mm Tube x 205mm Long

    Key Features

    • Part number: HP-BJT-14-12-205
    • Banjo size: 1/4 in banjo body connection
    • Tube size: 12 mm tube connection
    • Tube length: 205 mm
    • Connection type: Banjo body with formed tube for fixed routing
    • Typical use: Compact hydraulic plumbing between components with limited space
    Regular price £25.93
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  • KV Diverter Valve 12V Coil
    Regular price £102.49
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    KV Diverter Valve 12V Coil

    Key Features

    • Part number: HP-C5-12DC-COIL
    • Supply voltage: 12 VDC
    • Compatibility: KV diverter valve solenoid actuator
    • Electrical connection: DIN plug connection
    • Function: Energises diverter valve to switch hydraulic flow path
    • Typical use: Flow diversion on mobile hydraulics and auxiliary circuits
    Regular price £102.49
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  • 1/2" BSP Male x 1/2" BSP Female Swivel Adaptor - Approved Hydraulics Limited
    Regular price £4.52
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    1/4" BSP Male x 1/4" BSP Female Swivel Adaptor

    Key Features

    • Type: swivel adaptor (male to female)
    • Threads: 1/4 to 1/4 BSP
    • Swivel: captive nut allows hose connection without twisting
    • Seal: cone/washer seal depending on variant
    • Use: connect hoses where rotation during assembly is restricted
    Regular price £4.52
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  • ADMISSION CONNECTOR 3/4" PIPE 1"1/2 ELBOW 45º
    Regular price £30.80
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    ADMISSION CONNECTOR 3/4" PIPE 1"1/2 ELBOW 45º

    Key Features

    • Component: pump admission connector
    • Connections: 3/4" pipe to 1 1/2" elbow
    • Elbow angle: 45°
    • Intended use: pump inlet/suction side
    • Design: smooth radius to minimise cavitation risk
    • Compatibility: ABER pump suction fittings
    Regular price £30.80
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  • ADMISSION CONNECTOR 3/4'''HOSE 1''''1/4 CURVE 45
    Regular price £32.38
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    ADMISSION CONNECTOR 3/4'''HOSE 1''''1/4 CURVE 45

    Key Features

    • Component: pump admission connector
    • Connections: 3/4" hose to 1 1/4" curved elbow
    • Elbow angle: 45°
    • Intended use: pump inlet/suction side
    • Design: smooth radius to minimise cavitation risk
    • Compatibility: ABER pump suction fittings
    Regular price £32.38
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  • 1/2" BSP Male x 1/2" BSP Female Swivel Adaptor - Approved Hydraulics Limited
    Regular price £8.32
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    1/2" BSP Male x 1/4" BSP Female Swivel Adaptor

    Key Features

    • Type: swivel adaptor (male to female)
    • Threads: 1/2 to 1/4 BSP
    • Swivel: captive nut allows hose connection without twisting
    • Seal: cone/washer seal depending on variant
    • Use: connect hoses where rotation during assembly is restricted
    Regular price £8.32
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  • 3/8 BANJO BOLT (35mm long) - Approved Hydraulics Limited
    Regular price £5.29
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    3/8 BANJO BOLT (35mm long)

    Key Features

    • Part number: BJBOLT-06
    • Bolt size: 3/8 in banjo bolt
    • Length: 35 mm
    • Connection type: Hollow banjo bolt for banjo body fittings
    • Typical use: Hydraulic banjo joints for compact hose or tube routing
    • Sealing method: Requires sealing washers either side of banjo body
    Regular price £5.29
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  • 3/8 BANJO BOLT (35mm long) - Approved Hydraulics Limited
    Regular price £6.73
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    1/2 BANJO BOLT

    Key Features

    • Part number: BJBOLT-08
    • Bolt size: 1/2 in banjo bolt
    • Connection type: Hollow banjo bolt for banjo body fittings
    • Flow path: Cross drilled bolt shank for fluid transfer through banjo
    • Typical use: Hydraulic hose or tube banjo connections in compact spaces
    • Sealing method: Requires sealing washers either side of banjo body
    Regular price £6.73
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  • 1/2" BSP Female Swivel x 5/8" BSP Female Swivel Adaptor
    Regular price £8.99
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    1/2" BSP Female Swivel x 5/8" BSP Female Swivel Adaptor

    Key Features

    • Type: swivel adaptor (male to male)
    • Threads: 1/2 to 5/8 BSP
    • Swivel: captive nut allows hose connection without twisting
    • Seal: cone/washer seal depending on variant
    • Use: connect hoses where rotation during assembly is restricted
    Regular price £8.99
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  • Standard DIN Hirschmann Connector Plug - Black - Approved Hydraulics Limited
    Regular price £4.34
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    Standard DIN Hirschmann Connector Plug - Black

    Key Features

    • Standard: EN 175301-803 DIN 43650
    • Pins: 3 pin; 2 pole and earth
    • Cable gland range: 4 mm to 9 mm cable diameter
    • Ingress protection: IP67 when correctly assembled
    • Current rating: 16 A max
    • Voltage rating: AC up to 250 V; DC up to 300 V
    • Typical use: Solenoid valve coils and industrial sensors
    Regular price £4.34
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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.