ADP Bearing Hydraulic Nuts

Dimensions							Axial displacement max	Piston area	Mass	Desination	Max. force at 100Mpa(1000bar)
G	d1	d2	d3	B	B1	B2
mm							mm	mm2	kg	-	KN
M50×1.5	50.5	85	114	38	4	36	5	2900	2.7	HMV10E	290
M55×2	55.5	90	120	38	4	36	5	3150	2.75	HMV11E	315
M60×2	60.5	95	125	38	5	36	5	3300	2.8	HMV12E	330
M65×2	65.5	101	130	38	5	36	5	3600	3	HMV13E	360
M70×2	70.5	107	135	38	5	36	5	3800	3.2	HMV14E	380
M75×2	75.5	112	140	38	5	36	5	4000	3.4	HMV15E	400
M80×2	80.5	117	146	38	5	36	5	4200	3.7	HMV16E	420
M85×2	85.5	122	150	38	5	36	5	4400	3.75	HMV17E	440
M90×2	90.5	127	156	38	5	36	5	4700	4	HMV18E	470
M95×2	95.5	133	162	38	5	36	5	4900	4.3	HMV19E	490
M100×2	100.5	138	166	38	6	36	5	5100	4.4	HMV20E	510
M105×2	105.5	143	172	38	6	36	5	5300	4.65	HMV21E	530
M110×2	110.5	149	178	38	6	36	5	5600	4.95	HMV22E	560
M115×2	115.5	154	182	38	6	36	5	5800	5	HMV23E	580
M120×2	120.5	159	188	38	6	36	5	6000	5.25	HMV24E	600
M125×2	125.5	164	192	38	6	36	5	6200	5.35	HMV25E	620
M130×2	130.5	170	198	38	6	36	5	6400	5.65	HMV26E	640
M135×2	135.5	175	204	38	6	36	5	6600	5.9	HMV27E	660
M140×2	140.5	180	208	38	7	36	5	6800	6	HMV28E	680
M145×2	145.5	186	214	39	7	37	5	7300	6.5	HMV29E	730
M150×2	150.5	191	220	39	7	37	5	7500	6.6	HMV30E	750
M155×3	155.5	198	226	39	7	37	5	8100	6.95	HMV31E	810
M160×3	160.5	204	232	40	7	38	6	8600	7.6	HMV32E	860
M165×3	165.5	209	238	40	7	38	6	8900	7.9	HMV33E	890
M170×3	170.5	215	244	41	7	39	6	9400	8.4	HMV34E	940
M180×3	180.5	227	256	41	7	39	6	10300	9.15	HMV36E	1030
M190×3	191	239	270	42	8	40	7	11500	10.5	HMV38E	1150
M200×3	201	251	282	43	8	41	8	12500	11.5	HMV40E	1250
Tr205×4	207	256	288	43	8	41	8	12800	12	HMV41E	1280
Tr210×4	212	262	294	44	8	42	9	13400	12.5	HMV42E	1340
Tr215×4	217	267	300	44	8	42	9	13700	13	HMV43E	1370
Tr220×4	222	273	306	44	8	42	9	14400	13.5	HMV44E	1440
Tr225×4	227	280	312	45	8	43	9	15200	14.5	HMV45E	1520
Tr230×4	232	285	318	45	8	43	9	15500	14.5	HMV46E	1550
Tr235×4	237	291	326	46	8	44	10	16200	16	HMV47E	1620
Tr240×4	242	296	330	46	9	44	10	16500	16	HMV48E	1650
Tr250×4	252	307	342	46	9	44	10	17600	17.5	HMV50E	1760
Tr260×4	262	319	356	47	9	45	11	18800	19	HMV52E	1880
Tr270×4	272	330	368	48	9	46	12	19800	20.5	HMV54E	1980
Tr280×4	282	341	380	49	9	47	12	21100	22	HMV56E	2110
Tr290×4	292	353	390	49	9	47	13	22400	22.5	HMV58E	2240
Tr300×4	302	364	404	51	10	49	14	23600	25.5	HMV60E	2360
Tr310×5	312	375	416	52	10	50	14	24900	27	HMV62E	2490
Tr320×5	322	387	428	53	10	51	14	26300	29.5	HMV64E	2630
Tr330×5	332	397	438	53	10	51	14	27000	30	HMV66E	2700
Tr340×5	342	408	450	54	10	52	14	28400	31.5	HMV68E	2840
Tr345×5	347	414	456	54	10	52	14	29400	32.5	HMV69E	2940
Tr350×5	352	420	464	56	10	54	14	29900	35	HMV68E	2990
Tr360×5	362	431	472	56	10	54	15	31300	35.5	HMV72E	3130
Tr365×5	367	436	482	57	11	55	15	31700	38.5	HMV73E	3170
Tr370×5	372	442	486	57	11	55	16	32800	39	HMV74E	3280
Tr380×5	382	452	498	58	11	56	16	33500	40.5	HMV76E	3350
Tr385×5	387	459	504	58	11	56	16	34700	41	HMV77E	3470
Tr400×5	402	475	522	60	11	58	17	36700	45.5	HMV80E	3670
Tr410×5	412	486	534	61	11	59	17	38300	48	HMV82E	3830
Tr420×5	422	498	546	61	11	59	17	40000	50	HMV84E	4000
Tr430×5	432	508	556	62	11	60	17	40800	52.5	HMV86E	4080
Tr450×5	452	530	580	64	12	62	17	44100	57.5	HMV90E	4410
Tr460×5	462	541	590	64	12	62	17	45100	60	HMV92E	4510
Tr470×5	472	552	602	65	12	63	18	46900	62	HMV94E	4690
Tr480×5	482	563	612	65	12	63	19	48600	63	HMV96E	4860
Tr490×5	492	573	624	66	12	64	19	49500	66	HMV98E	4950
Tr500×5	502	585	636	67	12	65	19	51500	70	HMV100E	5150

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

HMV10E	HMV11E	HMV12E	HMV13E	HMV14E	HMV15E	HMV16E	HMV17E	HMV18E	HMV19E
HMV20E	HMV21E	HMV22E	HMV23E	HMV24E	HMV25E	HMV26E	HMV27E	HMV28E	HMV29E
HMV30E	HMV31E	HMV32E	HMV33E	HMV34E	HMV36E	HMV38E	HMV40E	HMV41E	HMV42E
HMV43E	HMV44E	HMV45E	HMV46E	HMV47E	HMV48E	HMV50E	HMV52E	HMV54E	HMV56E
HMV74E	HMV58E	HMV60E	HMV62E	HMV64E	HMV66E	HMV68E	HMV69E	HMV70E	HMV72E
HMV73E	HMV76E	HMV77E	HMV80E	HMV82E	HMV84E	HMV86E

Hydraulic-HMVC-E Series(inch dimensions)

HMVC10E	HMVC11E	HMVC12E	HMVC13E	HMVC14E	HMVC15E	HMVC16E	HMVC17E	HMVC18E	HMVC19E
HMVC20E	HMVC21E	HMVC22E	HMVC23E	HMVC24E	HMVC25E	HMVC26E	HMVC27E	HMVC28E	HMVC29E
HMVC30E	HMVC31E	HMVC32E	HMVC33E	HMVC34E	HMVC36E	HMVC38E	HMVC40E	HMVC41E	HMVC42E
HMVC43E	HMVC44E	HMVC45E	HMVC46E	HMVC47E	HMVC48E	HMVC50E	HMVC52E	HMVC54E	HMVC56E
HMVC74E	HMVC58E	HMVC60E	HMVC62E	HMVC64E	HMVC66E	HMVC68E	HMVC69E	HMVC70E	HMVC72E
HMVC73E	HMVC76E	HMVC77E	HMVC80E	HMVC82E	HMVC84E	HMVC86E