INA needle 曲线滚轮

Bearing types

Stud Type Track Roller

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Category: 曲线滚轮

Overview

INA needle Stud Type Track Roller is a cam follower with an integrated stud and bearing outer ring. It mounts without a separate shaft, saving space while supporting repeated loads in cams, guide rails, and automated handling equipment.

Needle or cylindrical rollers run inside a thick outer ring, while a threaded stud acts as the shaft. Options such as eccentric studs, seals, and lubrication holes improve adjustment and maintenance.

Key features

Integrated stud for simple mounting
Thick outer ring for cam and track contact
Handles repeated shock loads
Eccentric versions allow position adjustment

Typical applications

Cam follower mechanisms
Automated transfer rails
Packaging and printing machines
Lifts, doors, and guide systems

Selection guidance

Check stud diameter and thread, outer ring profile, eccentric adjustment need, load, speed, and lubrication.

Seal running surface Surface roughness Minimum hardness
of seal running surfaces
Sliding surface for radial Ra =0,2(cid:5)m–0,8(cid:5)m 600HV or 55HRC
seals (sealing for rotary Rz =1(cid:5)m–4(cid:5)m
motion)
Rz (cid:9)6,3(cid:5)m
1max
Sliding surface for rods Ra =0,05(cid:5)m–0,3(cid:5)m 600HV or 55HRC
and piston seals Rmr(0) 5% Rmr(0,25(cid:10)Rz) 70%
(sealing for axial motion)
Rz (cid:9)2,5(cid:5)m
Contact surfaces R (cid:9)1,6(cid:5)m –
(static sealing) Rz (cid:9)10(cid:5)m
Rz (cid:9)16(cid:5)m
Guidelines for mounting Irrespective of the type or form of the seal, it must always be ensured
that it is not damaged during fitting. It must also be ensured in
the mounting of directly sealed bearings that the prefitted sealing
washer is not damaged or deformed in any way.
Mounting of seals The axial adjacent construction should be designed such that
the seal lips are not constrained in an axial direction.
Seals are fitted correctly as follows:
■ A seal lip facing outwards protects the bearing against
the ingress of dust and contamination, Figure2,(cid:4), page41.
■ A seal lip facing inwards prevents the egress of lubricant from
the bearing, Figure2,(cid:2), page41. In the case of sealing ringsSD,
the side with the protective lip is the marked side. It should be
relubricated from inside, so the lip must face outwards.
■ The running surface on the shaft and seal lip must be oiled or
greased. This reduces the frictional energy during initial move-
ment. In the case of sealing rings with an encased reinforcing ring
– sealing ringG– the outside surface should be oiled before
pressing in. This makes it easier to fit the seal in the housing.
■ Press sealing rings carefully into the housing bore using
a pressing device and a suitable pressing tool, Figure3.
1
(cid:4)Pressing tool
Figure3
Fitting using a pressing tool
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■ Ensure that the seal lip is not damaged. Cover any sharp shaft
edges, slots, teeth or threads by means of fitting sleeves,
Figure4.
■ Fit sealing rings in such a way that the pressing-in force is applied
as close as possible to the outside diameter. Sealing ringsSD
have an oversized outside diameter. This gives firm seating once
the rings are pressed into the housing bore. The rings will adopt
their correct geometrical form once fitted in the bore.
(cid:4) Fitting sleeve
Figure4
Fitting using a fitting sleeve
■ Fit sealing rings perpendicular to the shaft axis and the housing
bore, Figure7.
Do not exceed the maximum perpendicularity between the sealing
ring and the shaft axis once fitted, see table. A larger deviation will
influence the sealing action.
■ In the case of sealing ringsSD, the space between the seal lip and
protective lip must be filled with grease, Figure5.
■ After fitting, allow the sealing rings to run in and check the seal-
ing function. Slight leakage (forming a grease or liquid film) is
desirable in order to lubricate the contact surface for the seal
lips.
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Figure5
Grease filling between seal lip and
protective lip
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Seals
Figure6
Grease collar
for supporting sealing action
Maximum perpendicularity
deviation
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Shaft diameter Maximum deviation
d
mm mm
d(cid:3)25 0,1
d(cid:11)25 0,2
90°
Figure7
Perpendicularity –
position of sealing ring
relative to shaft axis/housing bore
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Fitting of O rings For an O ring, correct placement in the groove is very important.
In order to prevent damage to the O ring during fitting, sharp edges
should be avoided. A lead chamfer will not only eliminate a sharp
edge but will also give easier pressing-in of the O ring. The lead
chamfer should be in the range between 10° and 20°.
The following guidelines must be observed:
■ Before fitting, the cord size and inside diameter of the O ring must
be checked.
■ The seal position must be clean and free from particles.
■ The O ring must not be adhesive bonded in the groove under
any circumstances. Alternatively, a fitting grease can be used
if chemical compatibility has been established.
■ During fitting, the O ring must not be forced over sharp edges,
threads, grooves and undercuts.
■ The use of sharp or pointed tools is not permitted.
■ As a result of fitting, the O ring must not be elongated by more
than 5% to 6%.
■ During fitting, the inside diameter must not be stretched by more
than 50%.
■ It must be ensured that the O ring is not fitted in a rotated position
during fitting.
■ For the removal of an O ring, a special removal tool should always
be used.
Removal of seals Once a seal contact has been broken, for example in the removal
of a cover or a rotary shaft seal, the seal must be replaced. Since the
seal was already in seal contact due to initial fitting and underwent
deformation as a result, the integrity of the seal cannot be ensured
if it is used again. Furthermore, most seals are in any case heavily
deformed or even destroyed during removal. During removal, it must
be ensured that the seal running surface is not damaged.
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Bearing housings
Housing types Housings are normally designed as plummer block housings (split or
unsplit) or as flanged housings. However, a large number of special
housings are also used across a wide range of different applications.
They are made predominantly from flake graphite case iron or cast
steel and, together with the associated bearing and seals, form a
complete unit.
SNV S30 SNS
RLE KPG LOE
2
VRE3 BNM BND
3 4
(cid:4)Split plummer block housings
(cid:2)Unsplit plummer block housings
(cid:5)Unsplit SPA housing
(cid:3)Flanged housings
Figure1
SPA F112 F5
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Housings In this housing concept for the implementation of a locating or
in locating bearing design and non-locating bearing arrangement, the housing must be ordered
as necessary in a locating bearing design or a non-locating bearing
non-locating bearing design
design. This applies to the housingsRLE, KPG, KPGZ, LOE, BNM, BND
and SPA.
In the case of the locating bearing design, the bearings are axially
clamped between the covers on the housings, Figure2. In the case
of the non-locating bearing design, the covers have shorter centring
collars. As a result, the bearing can be axially displaced, Figure3.
1 1
(cid:4)Centring collars on covers
for axial location of the bearing
Figure2
外壳
in locating bearing design
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(cid:4)Bearing can be axially displaced
in non-locating bearing design
00AA66AA11000000
Housings with locating rings In the case of many housings, the bearing seats are designed such
that the bearing is capable of axial displacement and therefore acts
as a non-locating bearing, Figure4.
In this housing concept for the implementation of a locating bearing
arrangement, a so-called locating ring is used, Figure5. This applies
to the housingsSNV, S30, SNS and F5.
Once locating rings are inserted, the bearings are axially located.
The locating rings are generally inserted in the housing on both sides
of the bearing. Normally, an even number of locating rings is speci-
fied in order to achieve concentric seating of the bearing in the hous-
ing. In some cases, a single locating ring is sufficient.
Non-locating bearing arrangement,
no locating bearing rings inserted
Housing seals The rolling bearings normally used in bearing housings are spherical
roller bearings, barrel roller bearings and deep groove ball bearings,
which do not have their own sealing arrangement. The bearing
position must therefore be sealed by means of the housing. In order
to seal the housing against the shaft, contact seals, non-contact
seals and combinations of these are available, depending on the
operating conditions. These seals can also be ordered in a split or
unsplit design.
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(cid:4)Locating rings give axial location
of the bearing
Locating bearing arrangement,
as a result of inserted locating rings
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Mounting For most series of housings from Schaeffler, mounting manuals are
available. In some cases, there are also manuals relating to specific
applications. Correct mounting has a decisive influence on the
achievable bearing life.
Special features In the mounting of housings, attention must be paid to the following:
in the mounting of housings ■ The mounting dimensions and critical dimensions must be
checked before starting work on mounting.
■ The upper and lower sections must not be transposed with parts
of other housings.
■ Before mounting, all lubrication holes must be cleaned.
■ The screws must be dry and free of lubricants.
■ A thin coating of mounting paste must be applied to the housing
bore.
■ In the case of split bearings, first the foot screws and then
the cover screws must be tightened to the required torque.
■ The specified maximum lubricant quantity must not be exceeded.
■ After mounting, precise alignment and the tightening torque
of the screws must be checked again and corrected as necessary,
Figure6.
(cid:4)Foot screws
(cid:2)Connecting screws
Checking of tightening torques
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Eye bolts On many housings, the housing body is provided with one or two eye
bolts to DIN580. These are intended as locating points for mounting
and dismounting of the housing. The load carrying capacity of the
eye bolts allows lifting of the housing including, in many cases,
a bearing fitted in the housing, but without a shaft. Further relevant
information is given in the description of the specific housing.
Correct usage Specifications for the use of eye bolts as locating points, Figure7:
of eye bolts on the housing body ■ Eye bolts must always be screwed fully into the housing.
■ If several eye bolts are provided on the housing body, all the eye
bolts must be used simultaneously as locating points.
■ Only use eye bolts for lifting the housing and, if permitted for this
housing, the bearing fitted in the housing. The eye bolts must not
be subjected to additional load as a result of parts attached to
the housing.
1 2
(cid:4)Correct usage of eye bolts
as locating points
(cid:2)Screw in eye bolts completely
(cid:5)Always use all eye bolts simultaneously
(cid:3)Do not apply additional load
as a result of attached parts
Correct usage
of eye bolts on the housing body
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Surface quality The requirements for the surface on which the housing is to be
of the mounting surface mounted are as follows:
■ sufficiently robust to withstand the static and
dynamic loads occurring in operation over the long term
■ surface roughness Ra(cid:9)12,5
■ flatness tolerance to DINENISO1101 of IT7,
measured across the diagonal
■ free from colour.
A difference in level between the mounting surfaces of bearing
housings will lead to misalignment of the shaft, Figure8.
(cid:12)
(cid:12)=misalignment of shaft
h=difference in level between
mounting surfaces
h
Figure8
Misalignment of the shaft
The permissible misalignment is dependent on the housing and
seal variant. Differences in level must be compensated such that
the permissible misalignment is not exceeded. Levelling shims can
be used for this purpose.
In addition, it must be ensured that the bearings mounted can
compensate the misalignments present.
Tightening torques In the case of split housings, the necessary tightening torque of
for connecting screws the connecting screws for the upper and lower housing section must
be determined in accordance with Schaeffler CatalogueGK1,
Bearing Housings. The tightening procedure should be carried out
in stages and in a crosswise sequence.
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Tightening torques Foot screws are used for screw mounting the housing to the
for foot screws mounting surface. They are not included in the scope of delivery
of the housings.
The following table contains tightening torques for metric coarse
pitch threads in accordance with DIN13, DIN962 and
DINISO965-2 as well as head contact dimensions in accordance
with DINENISO4014, DINENISO4017, DINENISO4032,
DINENISO4762, DIN6912, DIN7984, DIN7990 and
DINENISO8673.
The maximum tightening torques are valid with 90% utilisation of
the yield stress of the screw material8.8 and a friction factor of 0,14.
We recommend that foot screws should be tightened to approx. 70%
of these values, see table.
Tightening torques
Nominal screw diameter Maximum Recommended
for foot screws with metric thread tightening torque tightening torque
in accordance with DIN13, DIN962
Nm Nm
and DINISO965-2
M6 11,3 8
M8 27,3 20
M10 54 35
M12 93 65
M16 230 160
M20 464 325
M24 798 550
M30 1597 1100
M36 2778 1950
M42 3991 2750
M48 6021 4250
M56 9650 6750
M64 14416 10000
M72 21081 14500
M80 29314 20500
M90 42525 29500
M100 59200 41000
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Horizontal location In the case of plummer block housings, it may be necessary
to supplement the foot screws by additional horizontal location
of the housing.
Such horizontal location is necessary if one of the following
conditions is fulfilled:
■ The load angle is between 55° and 120°, Figure9.
■ Axial load is present.
Depending on the housing, the location may be implemented
by means of stops in the load direction or pins.
F 180(cid:13)
F 120(cid:13)
(cid:4)Load angle range
within which horizontal location
of the housing is necessary
F 55(cid:13)
Figure9
Load directions
on a plummer block housing F 0(cid:13)
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Further information
This PDF file is part of “medias” (medias.schaeffler.de). Please also
take note of all other information provided there (Internet pages, PDF
files), where this information is applicable to your task.?
54 MH 1 medias Schaeffler Technologies
Schaeffler Technologies Schaeffler Technologies Every care has been taken to ensure the
AG & Co. KG AG & Co. KG correctness of the information contained
Industriestraße 1–3 Georg-Schäfer-Straße 30 in this publication but no liability can
91074 Herzogenaurach 97421 Schweinfurt be accepted for any errors or omissions.
Germany Germany
We reserve the right to make technical
Internet www.schaeffler.de/en Internet www.schaeffler.de/en
changes.
E-mail info.de@schaeffler.com E-mail faginfo@schaeffler.com
Phone 0180 5003872 Phone 0180 5003872 Issued: 2017, September
Fax 0180 5003873 Fax 0180 5003873
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The same part number can be written with or without separators, or in progressive prefix form. We index these common variants so your search reaches this page:

INANEEDLE
INA NEEDLE

Overview

Needle or cylindrical rollers run inside a thick outer ring, while a threaded stud acts as the shaft. Options such as eccentric studs, seals, and lubrication holes improve adjustment and maintenance.