PRODUCT
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Deep Groove Ball Bearing
- Deep Groove Ball Bearing 6000 Series
- Full Complement Deep Groove Ball Bearing 6000-V Series
- Flanged Deep Groove Ball Bearing F6000 Series
- Deep Groove Ball Bearing 6200 Series
- Deep Groove Ball Bearing 6200NR Series
- Deep Groove Ball Bearing 6300 Series
- Deep Groove Ball Bearing 6300NR Series
- Deep Groove Ball Bearing 6400 Series
- Deep Groove Ball Bearing 6000NR Series
- Deep Groove Ball Bearing 6700 Series
- Flanged Deep Groove Ball Bearing F6700 Series
- Deep Groove Ball Bearing 6800 Series
- Full Complement Deep Groove Ball Bearing 6800-V Series
- Flanged Deep Groove Ball Bearing F6800 Series
- Deep Groove Ball Bearing 6900 Series
- Full Complement Deep Groove Ball Bearing 6900-V Series
- Flanged Deep Groove Ball Bearing F6900 Series
- Deep Groove Ball Bearing 62200 Series
- Deep Groove Ball Bearing 62300 Series
- Deep Groove Ball Bearing 63000 Series
- Deep Groove Ball Bearing 63800 Series
- Full Complement Deep Groove Ball Bearing 63800-V Series
- Deep Groove Ball Bearing 16000 Series
- Double Row Deep Groove Ball Bearing 4200 Series
- Double Row Deep Groove Ball Bearing 4300 Series
- Deep Groove Ball Bearing Inch R Series
- Deep Groove Ball Bearing Inch RMS Series
- Miniature Deep Groove Ball Bearing
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Spherical Roller Bearings
- Spherical Roller Bearing 21300 Series
- Spherical Roller Bearing 22200 Series
- Spherical Roller Bearing 22300 Series
- Spherical Roller Bearing 23000 Series
- Spherical Roller Bearing 23100 Series
- Spherical Roller Bearing 23200 Series
- Spherical Roller Bearing 23900 Series
- Spherical Roller Bearing 24000 Serie
- Spherical Roller Bearing 24100 Series
- Split Style Spherical Roller Bearing
- Thrust Roller Bearing
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Joint Bearing
- Radial Spherical Joint Plain Bearing GE...E
- Radial Spherical Joint Plain Bearing GE...ES
- Radial Spherical Joint Plain Bearing GE...ES-2RS
- Rod End Joint Bearing PHS/PHSB
- Rod End Joint Bearing GE...C
- Rod End Joint Bearing SI...TK
- Rod End Joint Bearing NHS
- Rod End Joint Bearing GIR...DO
- Rod End Joint Bearing GIR...C
- Rod End Joint Bearing GIR...UK
- Rod End Joint Bearing SQZ...RS
- Rod End Joint Bearing SA...T/K
- Rod End Joint Bearing POS/POSB
- Rod End Joint Bearing NOS
- Rod End Joint Bearing GAR...DO
- Rod End Joint Bearing GAR...C
- Rod End Joint Bearing GAR...UK
- Rod End Joint Bearing SQ...RS
- Rod End Joint Bearing SA...E
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Angular Contact Ball Bearings
- Single Row Angular Contact Ball Bearing 7000 series
- Single Row Angular Contact Ball Bearing 7200 series
- Single Row Angular Contact Ball Bearing 7300 series
- Single Row Angular Contact Ball Bearing 7900 series
- Double Row Angular Contact Ball Bearing 3200 Series
- Double Row Angular Contact Ball Bearing 3300 Series
- Qj2 Series Four Point Angular Contact Ball Bearing
- Qj3 Series Four Point Angular Contact Ball Bearing
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Tapered Roller Bearings
- Single Row Tapered Roller Bearing 30200 Series
- Single Row Tapered Roller Bearing 30300 Series
- Single Row Tapered Roller Bearing 31300 Series
- Single Row Tapered Roller Bearing 32000 Series
- Single Row Tapered Roller Bearing 32200 Series
- Single Row Tapered Roller Bearing 32300 Series
- Single Row Tapered Roller Bearing 33000 Series
- Single Row Tapered Roller Bearing 33100 Series
- Single Row Tapered Roller Bearing 33200 Series
- Single Row Tapered Roller Bearing Inch Series
- Double Row Tapered Roller Bearing 350000 Series
- Double Row Tapered Roller Bearing Inch Series
- Four-row Tapered Roller Bearing 380000 Series
- Four-row Tapered Roller Bearing Inch Series
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Needle Roller Bearing
- HK Style Standard Needle Roller Bearing
- HF Style Standard Needle Roller Bearing
- F Style Standard Needle Roller Bearing
- K Style Standard Needle Roller Bearing
- SCE Style Standard Needle Roller Bearing
- CF Style Standard Needle Roller Bearing
- HFL Style Standard Needle Roller Bearing
- TA Style Standard Needle Roller Bearing
- NATR Style Standard Needle Roller Bearing
- BK Style Standard Needle Roller Bearing
- NA Style Standard Needle Roller Bearing
- NK Style Standard Needle Roller Bearing without Inner Ring
- NKI Style Standard Needle Roller Bearing with Inner Ring
- NKIS Style Standard Needle Roller Bearing with Inner Ring
- NKS Style Standard Needle Roller Bearing without Inner Ring
- RNA Standard Needle Roller Bearing without Inner Ring
- Inch-Style Needle Roller Bearing
- MR Series Heavy Duty Needle Roller Bearing
- Self-Aligning Ball Bearings
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Cylindrical Roller Bearings
- Cylindrical Roller Bearing N Series
- Cylindrical Roller Bearing NU Series
- Cylindrical Roller Bearing NJ Series
- Cylindrical Roller Bearing NF Series
- Cylindrical Roller Bearing NUP Series
- Cylindrical Roller Bearing NFP Series
- Cylindrical Roller Bearing NH(NJ+HJ) Series
- Cylindrical Roller Bearing NN Series
- Cylindrical Roller Bearing NNU Series
- Cylindrical Roller Bearing NNF Series
- Cylindrical Roller Bearing FC Series
- Cylindrical Roller Bearing FCD Series
- SL Sheave Wheel Series Cylindrical Roller Bearing
- Thrust Ball Bearing
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Pillow Block Bearing
- Pillow Block Bearing UC Inserts
- Pillow Block Bearing UK Inserts
- Pillow Block Bearing SB Inserts
- Pillow Block Bearing SA Inserts
- Pillow Block Bearing CS Inserts
- Pillow Block Bearing UCP
- Pillow Block Bearing UKP
- Pillow Block Bearing SAP
- Pillow Block Bearing SBP
- Pillow Block Bearing UCPA
- Pillow Block Bearing UKPA
- Pillow Block Bearing UCPH
- Pillow Block Bearing UKPH
- Pillow Block Bearing UCF
- Pillow Block Bearing UKF
- Pillow Block Bearing UCFL
- Pillow Block Bearing UKFL
- Pillow Block Bearing UCFC
- Pillow Block Bearing UKFC
- Pillow Block Bearing UCFA
- Pillow Block Bearing UKFA
- Pillow Block Bearing UCFB
- Pillow Block Bearing UKFB
- Pillow Block Bearing UCT
- Pillow Block Bearing UKT
- Pillow Block Bearing UCC
- Pillow Block Bearing SBPP
- Pillow Block Bearing SAPP
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Linear Bearing
- Standard Linear Bearing LM Series
- Adjustable Type Linear Bearing LM-AJ Series
- Open Type Linear Bearing LM--OP Series
- Lengthened Type Linear Bearing LM-L Series
- Standard Linear Bearing LME Series
- Adjustable Type Linear Bearing LME-AJ Series
- Open Type Linear Bearing LME-OP Series
- Lengthened Type Linear Bearing LME--L Series
- Standard Linear Bearing LMB Series
- Adjustable Type Linear Bearing LMB--AJ Series
- Open Type Linear Bearing LMB--OP Series
- Lengthened Type Linear Bearing LMB--L Series
- Round Flange Linear Bearing LMF Series
- Square Flange Type Linear Bearing LMK Series
- Oval Flange Linear Bearing LMH Series
- Round Flange Linear Bearing LMF--L Series
- Square Flange Type Linear Bearing LMK-L Series
- Oval Flange Linear Bearing LMH-L Series
- Pilot Flange Linear Bearing LMFP Series
- Pilot Flange Linear Bearing LMKP Series
- Pilot Flange Linear Bearing LMHP Series
- Pilot Flange Linear Bearing LMFP-L Series
- Pilot Flange Linear Bearing LMKP-L Series
- Pilot Flange Linear Bearing LMHP-L Series
- Middle Flanged Linear Bearing LMFC-L Series
- Middle Flanged Linear Bearing LMKC-L Series
- Middle Flanged Linear Bearing LMHC-L Series
- Round Flange Linear Bearing LMEF Series
- Square Flange Type Linear Bearing LMEK Series
- Round Flange Linear Bearing LMEF-L Series
- Square Flange Type Linear Bearing LMEK-L Series
- Middle Flanged Linear Bearing LMEKC-L Series
- Middle Flanged Linear Bearing LMEFC-L Series
- Round Flange Linear Bearing LMBF Series
- Square Flange Type Linear Bearing LMBK Series
- Round Flange Linear Bearing LMBF-L Series
- Compact Ball Bushing KH Series
- SC UU Slide Block Unit Series
- SC LUU Linear Case Unit Series
- SC VUU Linear Pillow Block Unit Series
- SBR UU Support Rail Unit Series
- SBR LUU Support Rail Unit Series
- TBR UU Support Rail Unit Series
- SCE UU Slide Block Unit Series
- SCE LUU Linear Case Unit Series
- SCE VUU Linear Pillow Block Unit Series
- Vertical Shaft Support SK Series
- Horizontal Shaft Support SHF Series
- Other Bearings
Layout design of printing machine bearings
by:JNSN
2021-12-29
Design requirements for adjacent structures: Printing machine bearings are very robust mechanical components, and the surrounding structures are required to have high precision, which can be fully achieved by modern processing equipment. The most important requirements for the surrounding structure are high-precision shaft diameters and precision-machined wallboard holes. Usually, the journal needs to be ground, the wall plate hole needs to be finished, and if necessary, it is honed, as shown in Figure 1. The internal radial clearance of the cylindrical bore bearing is specially designed according to the specific application. The swing bearing in the three-ring and four-ring bearings has zero clearance or light preload, which has been set before the bearing leaves the factory. No customer adjustments are required. Schaeffler Group has advanced calculation software to assist design. In order to achieve the best function, all tolerances must be carefully determined. Axial positioning of printing machine bearings The positioning of the outer ring of printing machine bearings DML is very simple, because it does not bear axial forces during work. The eccentric middle ring and outer ring of the three-ring and four-ring bearings are axially positioned by the bearing shoulder and the retaining ring. Therefore, for bearing units DML3E, DML3D and DMLD, there is no need for axial positioning through peripheral structures. Generally, fixing the eccentric ring to the wall panel with peripheral parts can be sufficient to achieve axial positioning, page 37, Figure 1. Thrust bearing arrangement If cylindrical roller bearings are used at both ends of the drum, then another rolling bearing is required to bear the axial force. Since the axial force in the printing press is usually very low, economical standard bearings can meet the requirements. The proven reliable types include two zero-clearance angular contact ball bearings, double-direction thrust needle roller bearings or double-direction thrust cylindrical roller bearings, see page 98. Tolerance of shaft and bearing seat hole In order to minimize the working clearance tolerance of the bearing, the tolerance of cylindrical shaft diameter should be as small as possible. The prerequisite for optimization is that the tolerance level of the shaft must reach IT4. However, the most commonly used shaft fit k5 can meet all requirements. For tapered shafts, since the working clearance of the bearing can be adjusted, the tolerance can be slightly larger. In this case, js6 is commonly used for shaft coordination. Tolerances of wallboard holes For printing press bearings, the wallboard hole and the outer ring of the bearing are usually a transition fit or a tight fit. When using the bearing unit DMLE or DML3D, if the outer eccentricity needs to be moved during work, a certain fit clearance is required. In order to minimize the possible deformation of the components, the tolerance band should be as narrow as possible. This can be achieved by appropriately fitting the bearing into the wallboard hole or by high-precision machining methods, such as honing. In order to facilitate the selection and installation, the bearings of the printing press are measured before they leave the factory, and the actual outer diameter is recorded on the bearing. For situations that often require mass production such as sheet-fed offset printing presses, it is more economical to design the outer diameter of the bearing in groups. In this way, the diameter tolerance of the wallboard hole can be relatively large, which is very beneficial to mass production. Geometric tolerances of bearing mating surfaces. If the bearing arrangement meets the requirements of running accuracy, rigidity, zero clearance, working temperature and guaranteeing excellent printing quality, then the adjacent structures must meet certain minimum requirements. The geometric deviation of adjacent parts must be controlled to a minimum. In order to achieve the required fit, the mating surface of the shaft and the bearing seat hole must meet certain tolerances, see Figure 2, Figure 3 and page 42, and note the requirements for the roughness of the bearing mating surface, page 43. Accuracy of the bearing mating surface For the tolerance of the shaft and the bearing seat hole mating surface, the allowable geometric deviations are listed here, please refer to the table. Accuracy grades can be viewed in accordance with ISO basic tolerances in accordance with ISO 286, see page 43. The allowable geometric deviation value must be determined according to the relevant shaft diameter and seat hole diameter. Example: If the tolerance level of the shaft bearing is P5 and the shaft diameter is 90 mm, the tolerance value of the shaft is as follows, see the table: ■ Roundness t u003d IT3 · 1/2 u003d 6 · 1/2 u003d 3 m. The roughness of the bearing mating surface The roughness of the bearing mating surface must match the tolerance level of the bearing. The average roughness Ra should not be too large to ensure a limited reduction in interference, please see the table. The shaft needs to be ground and the bearing seat hole needs to be finished. The design and safety guidelines in the product chapter also give tolerances and allowable roughness for holes and shafts.
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