Locking Assemblies RfN 7014

This locking device, dual tapered similar the 7012 type, is designed to transmit extremely high torques. Unlike the 7012 style, the 7014 device offers good centering ability due to it’s relatively long design, making a pre-centering hub section unnecessary. It’s design also provides for a different inside diameter to outside diameter ration, thereby not interchangeable with the other RINGFEDER^® types. Available in sizes from 70 to 300 mm.

Download

Request

Calculation

RfN 7014

CAD data download is available after login.

d mm	D mm	L mm	L₁ mm	L₃ mm	T Nm	p_W N/mm²	p_N N/mm²	D_G mm	T_A Nm	D_{N min} bei Rp_0,2400 N/mm² mm	T_max Nm
60	100	60	50	44	4130	208	125	10	84	139	5120
70	120	74	62	56	6850	200	117	12	145	154	8068
80	130	74	62	56	11650	263	162	12	145	189	13813
90	140	74	62	56	13000	234	150	12	145	196	15505
100	160	94	80	74	19700	213	133	14	230	217	23620
110	170	94	80	74	26600	242	157	14	230	248	32045
120	180	94	80	74	28900	222	148	14	230	255	34968
130	190	94	80	74	31200	205	140	14	230	263	37903
140	200	94	80	74	40200	227	159	14	230	294	49017
150	210	94	80	74	42900	212	151	14	230	301	52489
160	230	110	94	88	64000	227	158	16	355	339	78558
170	240	110	94	88	67800	214	152	16	355	347	83477
180	250	110	94	88	83000	235	169	16	355	384	102483
190	260	110	94	88	88000	223	163	16	355	390	108947
200	270	110	94	88	105000	242	179	16	355	431	130330
220	300	134	116	110	123000	189	139	18	485	420	153404
240	320	134	116	110	153000	198	148	18	485	463	191651
260	340	134	116	110	186000	205	157	18	485	506	233920
280	370	156	136	130	230000	192	145	20	690	533	290328
300	390	156	136	130	245000	179	138	20	690	548	310335

d inch	D inch	L inch	L₁ inch	L₃ inch	T ft-lbs	p_W psi	p_N psi	D_G mm	T_A ft-lbs	D_{N min} bei Rp_0,2400 N/mm² inch	T_max ft-lbs
2.362	3.937	2.362	1.969	1.732	3046	30190	18143	M 10	62	5.472	3776
2.756	4.724	2.913	2.441	2.205	5052	28986	16957	M 12	107	6.063	5951
3.150	5.118	2.913	2.441	2.205	8593	38116	23478	M 12	107	7.441	10188
3.543	5.512	2.913	2.441	2.205	9588	33913	21739	M 12	107	7.717	11436
3.937	6.299	3.701	3.150	2.913	14530	30870	19275	M 14	170	8.543	17421
4.331	6.693	3.701	3.150	2.913	19619	35072	22754	M 14	170	9.764	23635
4.724	7.087	3.701	3.150	2.913	21316	32174	21449	M 14	170	10.039	25791
5.118	7.480	3.701	3.150	2.913	23012	29710	20290	M 14	170	10.354	27956
5.512	7.874	3.701	3.150	2.913	29650	32899	23043	M 14	170	11.575	36154
5.906	8.268	3.701	3.150	2.913	31642	30725	21884	M 14	170	11.850	38714
6.299	9.055	4.331	3.701	3.465	47205	32899	22899	M 16	262	13.346	57942
6.693	9.449	4.331	3.701	3.465	50007	31014	22029	M 16	262	13.661	61570
7.087	9.843	4.331	3.701	3.465	61218	34058	24493	M 16	262	15.118	75589
7.480	10.236	4.331	3.701	3.465	64906	32319	23623	M 16	262	15.354	80356
7.874	10.630	4.331	3.701	3.465	77445	35072	25942	M 16	262	16.969	96128
8.661	11.811	5.276	4.567	4.331	90721	27391	20145	M 18	358	16.535	113146
9.449	12.598	5.276	4.567	4.331	112849	28696	21449	M 18	358	18.228	141356
10.236	13.386	5.276	4.567	4.331	137188	29710	22754	M 18	358	19.921	172533
11.024	14.567	6.142	5.354	5.118	169642	27826	21014	M 20	509	20.984	214138
11.811	15.354	6.142	5.354	5.118	180705	25942	20000	M 20	509	21.575	228894

Images & Drawings

Dimensions

Location

Gear wheel fastening

Characteristics

Large transmittable peripheral forces – due to the long, flat cones it is possible to transmit maximum torques and axial forces with one RfN 7014 Locking Assembly.
Maximum reliability – due to the flat cones and the relatively wide construction (large guide lengths) the Locking Assemblies RfN 7014 centre themselves. During installation the Locking Assembly, shaft and hub remain in position to one another. The shaft and hub are loaded by pressure, providing additional safety compared to 3-part versions.

Example applications:

Heavy pulleys
Construction of heavy machinery
Couplings
Cable sheaves

Mounting of Locking Assembly

The values for T, F_ax, p_W and p_N apply to Locking Assemblies installed in oiled condition

Surface finishes

For shafts and hub bores R_a ≤ 3,2 μm

Tolerances

We recommend the following mounting tolerances

Shaft: k9-h9; Hub: N9-H9

Arrangement of several Locking Assemblies RfN 7014

Two Locking Assemblies at most can be installed in series. In this case the transmission values of the above table are doubled.

Change of screw tightening torques

A reduction of the contact pressures and the transmission values by reducing the tightening torque of the screws is possible. The admissible lower limit results from the multiplication of the T_A values of the above table by 0,8. There is an approximate linear relationship between T, T_A, F_ax, p_W and p_N.

RINGFEDER® Locking Assemblies – How to Use Them?

Downloads

Product Paper RINGFEDER® Locking Assemblies

Tech Paper Locking Assemblies RINGFEDER® RfN 7014

Instruction Manual Locking Assemblies RINGFEDER® RfN 7014

More downloads are available in our download area:

Download

Shaft-Hub Connections

Damping Technology

Couplings

Downloads

Tools

Videos

Locking Assemblies RfN 7014

RfN 7014

Images & Drawings

Characteristics

Example applications:

Mounting of Locking Assembly

Surface finishes

Tolerances

Arrangement of several Locking Assemblies RfN 7014

Change of screw tightening torques

RINGFEDER® Locking Assemblies – How to Use Them?

Downloads

Related RINGFEDER® Industry Solutions

Your Request Has Been Submitted Successfully.