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ADP Bearing Hydraulic Nuts

ADP bearing hydraulic nuts Admin Edit

Min. Order: 2 Piece/Pieces
Trade Term: FOB
Payment Terms: L/C, T/T
Place of Origin: Zhejiang, China (Mainland)
Means of Transport: Ocean, Air
Production Capacity: 90 tons of seamless...
Packing: Plastic-bag Box Carton
Delivery Date: 30-45days
Brand Name: ADP Certificate: ISO9001
Export Area: Global

ADP hydraulic nuts bearing



DimensionsAxial displacement maxPiston areaMassDesinationMax. force at 100Mpa(1000bar)
Gd1d2d3BB1B2
mm





mmmm2kg-KN
M50×1.550.58511438436529002.7HMV10E290
M55×255.59012038436531502.75HMV11E315
M60×260.59512538536533002.8HMV12E330
M65×265.510113038536536003HMV13E360
M70×270.510713538536538003.2HMV14E380












M75×275.511214038536540003.4HMV15E400
M80×280.511714638536542003.7HMV16E420
M85×285.512215038536544003.75HMV17E440
M90×290.512715638536547004HMV18E470
M95×295.513316238536549004.3HMV19E490












M100×2100.513816638636551004.4HMV20E510
M105×2105.514317238636553004.65HMV21E530
M110×2110.514917838636556004.95HMV22E560
M115×2115.515418238636558005HMV23E580
M120×2120.515918838636560005.25HMV24E600












M125×2125.516419238636562005.35HMV25E620
M130×2130.517019838636564005.65HMV26E640
M135×2135.517520438636566005.9HMV27E660
M140×2140.518020838736568006HMV28E680
M145×2145.518621439737573006.5HMV29E730












M150×2150.519122039737575006.6HMV30E750
M155×3155.519822639737581006.95HMV31E810
M160×3160.520423240738686007.6HMV32E860
M165×3165.520923840738689007.9HMV33E890
M170×3170.521524441739694008.4HMV34E940












M180×3180.5227256417396103009.15HMV36E1030
M190×31912392704284071150010.5HMV38E1150
M200×32012512824384181250011.5HMV40E1250
Tr205×42072562884384181280012HMV41E1280
Tr210×42122622944484291340012.5HMV42E1340












Tr215×42172673004484291370013HMV43E1370
Tr220×42222733064484291440013.5HMV44E1440
Tr225×42272803124584391520014.5HMV45E1520
Tr230×42322853184584391550014.5HMV46E1550












Tr235×423729132646844101620016HMV47E1620
Tr240×424229633046944101650016HMV48E1650
Tr250×425230734246944101760017.5HMV50E1760
Tr260×426231935647945111880019HMV52E1880
Tr270×427233036848946121980020.5HMV54E1980












Tr280×428234138049947122110022HMV56E2110
Tr290×429235339049947132240022.5HMV58E2240
Tr300×4302364404511049142360025.5HMV60E2360
Tr310×5312375416521050142490027HMV62E2490
Tr320×5322387428531051142630029.5HMV64E2630












Tr330×5332397438531051142700030HMV66E2700
Tr340×5342408450541052142840031.5HMV68E2840
Tr345×5347414456541052142940032.5HMV69E2940
Tr350×5352420464561054142990035HMV68E2990
Tr360×5362431472561054153130035.5HMV72E3130












Tr365×5367436482571155153170038.5HMV73E3170
Tr370×5372442486571155163280039HMV74E3280
Tr380×5382452498581156163350040.5HMV76E3350
Tr385×5387459504581156163470041HMV77E3470
Tr400×5402475522601158173670045.5HMV80E3670












Tr410×5412486534611159173830048HMV82E3830
Tr420×5422498546611159174000050HMV84E4000
Tr430×5432508556621160174080052.5HMV86E4080
Tr450×5452530580641262174410057.5HMV90E4410
Tr460×5462541590641262174510060HMV92E4510












Tr470×5472552602651263184690062HMV94E4690
Tr480×5482563612651263194860063HMV96E4860
Tr490×5492573624661264194950066HMV98E4950
Tr500×5502585636671265195150070HMV100E5150



Hydraulic nuts M50×1.5 - Tr500×5

-- Thanks to the "integrated measuring ring", which is the center of our innovation, the required     distance   of axial drive-up of bearings with taper bore during installation can be done precisely without dial gauge or other instrument of any kind.

-- The very same ADP hydraulic nut can be used for mounting as well as dismounting. An unique feature that is not rivaled by any current patented designs available on the market.

-- Less time required to disassemble the hydraulic nut if sealing rings are to be replaced.

-- Basically, there is no need to double-check internal clearance of bearing upon installation because of the measuring capability of the hydraulic nut itself. This comes in handy especially for those readily-sealed bearings where no internal clearance check is possible.

-- Other than the above, general features/functions are identical or superior to current market offerings.



Design Principle

ADP hydraulic nut consist of an annular body, and a piston, in addition to the above main parts, there is a measuring ring which is the center of our innovation. The piston is operated hydraulically. The pressure chamber is sealed by two O-rings ofNitrile butadiene rubber (NBR).

The hydraulic nut are designed for a maximum oil pressure of 100 MPa (1000 bar or 14500 psi).Their stoke is power enough that the rolling bearings or other parts can be mounted in a single operation.

The bore G in the annular body is available with a metric fine thread, a trapezoidal thread or an inch thread. They are suitable for sleeve and shaft threadsof international standard.

ADP hydraulic nuts feature two oil supply connection holes with G 1/4 thread. Four handling holes are on the outside diameter of the annular body and two handling holes are on the side face for easier handling.

a) Design for accurate measurement of the piston travel:

To differentiate our add-on value from competitors, we focused on practicality and simplicity. Our idea was to build in a kind of " micrometer " onto the hydraulic nut so that there is no need for additional measuring instrument during installation. And this has been achieved by introducing a rotatable " measuring ring " on the outer rim of the piston via male and female threads. There are calibrations on the outer diameters of the annular body as well as the measuring ring. By adjusting and aligning calibrations on the opposite sides of annular body and measuring ring, the required axial drive-up can be achieved with ease within 0.015mm allowance of accuracy. The finer the thread pitch is the more precision it is going to give.




At the same time with the verification processes of our innovative ADP hydraulic nut with measuring ring, we've compared our product against competitors', which more or less adopting a design of an added-on dial gauge. During assembling of a hydraulic nut, it is very common that jerking takes place (especially when axial drive-up pressure exceeding 20 MPa) whenever there is a breakaway from overcoming static friction into sliding. Dial gauge with a nature of inaccuracy under jerking performs badly. Our product, on the contrary, proves to be influence-free from jerking.

b) Design for easy disassembly and maintenance:
In terms of maintenance, O-ring is the most consumed part and needs to be replaced anew once damaged. Our design of measuring ring provides an additional advantage over competitors'—jacking bolts do not intrude into annular body cavity. Intrusion by jacking bolts may create complication of compromising static sealing of the plug, which is important for constant high oil pressure application. With our design, there are three (3) jacking bolts equally spaced on the measuring ring. Upon disassembly for the replacement of O-ring these three jacking bolts are exactly the only tool and procedure need to be done, reliable and time-saving.

c) Flexible in both directions of installation:
Our measuring ring provides no interference in both directions during installation, i.e. the same hydraulic nut can be used for mounting and dismounting of withdrawal sleeve.




How it works
Example 1: Mounting a spherical roller bearing with adapter sleeve, 22320 K (see Step 1 to Step 5 by diagrammatic explanation). Theoretically, the axial drive-up for mounting it on a taper seating is 1.06 mm according to the calculation (the required max. radial internal clearancereduction is 0.06% of the nominal diameter of the bearing bore). In fact, due to the quality and the manufacturing allowances involved with shaft and adapter sleeve, there are variations in the total clearance before installation. And in practice, those variations can be eliminated by applying a pre-load pressure, which is 7.1 MPa (71 bar) more or less, in the hydraulic nut. After that, a further 0.92 mm in axial drive-up needs to be accomplished.

The thread pitch of the measuring ring is 1 mm. 0.92 mm in axial drive-up is converted into angular travel by the following simple equation:0.92÷1.00×360=331.2°≈330° As demonstrated by the following illustrations and steps, one can see how easily this can be done.

The example above mentioned is for the convenience diagrammatic explanation . In fact, for mounting spherical roller bearing 22320K with adapter sleeve H2320, two sliding surfaces, the initial preload is 8.7 MPa, a further 0.65 mm in axial drive-up needs to be accomplished . The thread pitch of the measuring ring is 1.5 mm. 0.65 mm in axial drive-up is converted into angular travel 155° . See the mounting data on Table 1.

Example 2, for mounting bearing 23164K with withdrawal sleeve AHX3164G which has two sliding surfaces, an ADP hydraulic nut HMV68E is used, the initial preload is 7.8 MPa, a further 1.85 mm in axial drive-up needs to be accomplished . The thread pitch of the measuring ring is 2 mm. 1.85 mm in axial drive-up is converted into angular travel 334°. This hydraulic nut can be used for extracting the sleeve in the same time. See the mounting data on Table 2.

Table 1 and Table 2 are our proposal which aim for the total reduction ofinternal clearance is 0.05% -0.055%of the nominal diameter of the bearing bore. (The variations depend on the section heightof the inner ring ofbearing design.)

Mounting Procedures
All the mounting data ofare listed on Table 1 and Table 2 which is very important for accurate mounting of spherical roller bearing with taper bore.It is very simple to use the data on the Tables:
-Depend on sleeve types, choose Table 1 or Table 2
-Select the sliding surface, single or double
-Find the preload pressure
-Choose the angular travel range

1-1Screw in the ADP hydraulic nut on the thread of the adapter sleeve and rotate the hydraulic nut with the help of a steel pin inserted on the outer rim of the annular body until the bearing is tightened by the hydraulic nut.
1-2Open the valve of the hydraulic pump.
1-3 Connect the high-pressure hose of hydraulic pump to the quick connecting nipple on the hydraulic nut. 1-4 Make sure again that the bearing is tightened against by the hydraulic nut.
1-5 Close the valve of the hydraulic pump to prevent the oil from back-flowing.


Pump the oil pressure up to 70 bar (7 Mpa). There will be a gap resulted from the axial movement of the piston when jacking up the oil pressure. It doesn't matter how big or small the gap is.



3-1Insert a Φ5 mm pin into the hole on the outer rim of the measuring ring and rotate it to tighten against the annular body.
3-2Mark one of the calibrations on the measuring ring as the reference starting point. In this example, index no.1 is specified.
3-3Locate a mark 330° away from the reference starting point in step 3-2 on the calibrations of the cylinder as the target mark. Aligning the reference starting point (index no.1) with the target mark will have the job done.



Continue to pump the oil to an appropriate incremental pressure. There will be a growing gap between measuring ring and annular body. Stop pumping and rotate the measuring ring to close the gap. Watch how far you need to go between the reference starting point (index no.1) and the target mark.



Repeat step 4 in graduation until alignment of the reference starting point and the target is reached.

Threads
ADP hydraulic nuts up to and including size 40 have metric ISO threads to tolerance 6H(ISO 965/III-1980)and the lager nuts from size 41 have metric ISO trapezoidal threads to tolerance 7H (ISO 2901-1977).

The mating thread on the shaft should made to the tolerance 6g (ISO 965/III-1980) for the small sizes, and tolerance 7e (ISO 2901/1977) for sizes with trapezoidal thread.

Material
The annular body of ADP hydraulic nuts up to and including size 64 are made ofhardenable steel and the pistons are made of bearing steel. From size 66 the annular bodys and pistons are made of Grade 2 construction steel.


Hydraulic-HMV-E Series

HMV10EHMV11EHMV12EHMV13EHMV14EHMV15EHMV16EHMV17EHMV18EHMV19E
HMV20EHMV21EHMV22EHMV23EHMV24EHMV25EHMV26EHMV27EHMV28EHMV29E
HMV30EHMV31EHMV32EHMV33EHMV34EHMV36EHMV38EHMV40EHMV41EHMV42E
HMV43EHMV44EHMV45EHMV46EHMV47EHMV48EHMV50EHMV52EHMV54EHMV56E
HMV74EHMV58EHMV60EHMV62EHMV64EHMV66EHMV68EHMV69EHMV70EHMV72E
HMV73EHMV76EHMV77EHMV80EHMV82EHMV84EHMV86E



Hydraulic-HMVC-E Series(inch dimensions)

HMVC10EHMVC11EHMVC12EHMVC13EHMVC14EHMVC15EHMVC16EHMVC17EHMVC18EHMVC19E
HMVC20EHMVC21EHMVC22EHMVC23EHMVC24EHMVC25EHMVC26EHMVC27EHMVC28EHMVC29E
HMVC30EHMVC31EHMVC32EHMVC33EHMVC34EHMVC36EHMVC38EHMVC40EHMVC41EHMVC42E
HMVC43EHMVC44EHMVC45EHMVC46EHMVC47EHMVC48EHMVC50EHMVC52EHMVC54EHMVC56E
HMVC74EHMVC58EHMVC60EHMVC62EHMVC64EHMVC66EHMVC68EHMVC69EHMVC70EHMVC72E
HMVC73EHMVC76EHMVC77EHMVC80EHMVC82EHMVC84EHMVC86E












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