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CCHN is a trusted U.S. registered company in industrial automation & controls, CCHN's goal is helping saving your money by bypassing all kinds of local dealers/agents in buying industrial automation products from Chinese manufacturers directly. You will be enjoyed to get free tech support on how to choose, how to wire, how to commissioning with CCHN professional engineers. Shopping for your automation systems on CCHN one-stop online store now. The price on the website only for sample reference. for Mass order,please send the enquiry to us.

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Foam cutting is a device for processing materials in the chemical industry such as foam and sponges. It mainly uses the high

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CCHN Industry
 
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CCHN Industry

CCHN is a trusted U.S. registered company in industrial automation & controls, CCHN's goal is helping saving your money by bypassing all kinds of local dealers/agents in buying industrial automation products from Chinese manufacturers directly. You will be enjoyed to get free tech support on how to choose, how to wire, how to commissioning with CCHN professional engineers. Shopping for your automation systems on CCHN one-stop online store now. The price on the website only for sample reference. for Mass order,please send the enquiry to us.

Blog

Foam cutting is a device for processing materials in the chemical industry such as foam and sponges. It mainly uses the high

...
LM8UU Metric Linear Ball Bearings with Rubber Seals
 
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LM8UU Metric Linear Ball Bearings with Rubber Seals


$6.54
This 8 x 15 x 24 mm (LM8UU) linear ball bearing works with 8mm shafts, compact and lightweight, made of carbon steel material
SKU: CHN-LBB-LM8
Free Shipping Worldwide
Delivery date: 6-12 days

Low cost linear ball bushings for most applications. These items are constructed with hardened steel segments for ultra-smooth, long-lasting linear motion. Inner cavities serve as lubrication reservoirs for long lubrication. These bearings have proven to be long lasting and provide precise low friction linear movement.

Specifications

lm uu linear bearing dimension

Nominal shaft diameterResin retainerdr
LM…UUBall circuitWeightLM…UU-AJBall circuitWeightLM…UU-OPBall circuitWeightmmTolerance
PrecisionHigh
8mmLM8UU415gLM8UU-AJ414.7g---80
-6μm
0
-9μm
10mmLM10UU429.5gLM10UU-AJ429gLM10UU-OP323g10
12mmLM12UU431.5gLM12UU-AJ431gLM12UU-OP325g12
16mmLM16UU569gLM16UU-AJ568gLM16UU-OP452g16
20mmLM20UU587gLM20UU-AJ585gLM20UU-OP469g200
-7μm
0
-10μm
25mmLM25UU6220gLM25UU-AJ6216gLM25UU-OP5188g25
30mmLM30UU6250gLM30UU-AJ6245gLM30UU-OP5210g30
35mmLM35UU6390gLM35UU-AJ6384gLM35UU-OP5335g350
-8μm
0
-12μm
40mmLM40UU6585gLM40UU-AJ6579gLM40UU-OP5500g40
50mmLM50UU61580gLM50UU-AJ61560gLM50UU-OP51340g50
60mmLM60UU61860gLM60UU-AJ61820gLM60UU-OP51610g600
-9μm
0
-15μm

 

Major dimensions and toleranceEccentricityRadial clearance (Max)Basic load rating
DLBWD1hh1θ
mmTolerancemmTolerancemmTolerancePrecisionHighDynamic Static
150
-11μm
240
-200μm
17.50
-200μm
1.1mm14.3mm1mm--8μm12μm-3μm274c N392cN
190
-13μm
29221.3mm18mm1mm6.8mm80°-4μm372c N549co N
2130231.3mm20mm1.5mm8mm80°510c N784co N
283726.51.6mm27mm1.5mm11mm80°-6μm774c N1180co N
320
-16μm
4230.51.6mm30.5mm1.5mm11mm60°10μm15μm882c N1370co N
40590
-300μm
410
-300μm
1.85mm38mm2mm12mm50°980c N1570co N
456444.51.85mm43mm2.5mm15mm50°-8μm1570c N2740co N
520
-19μm
7049.52.1mm49mm2.5mm17mm50°12μm20μm1670c N3140co N
608060.52.1mm57mm3mm20mm50°-10μm2160c N4020co N
80100742.6mm76.5mm3mm25mm50°-13μm3820c N7940co N
900
-22μm
110853.15mm86.5mm3mm30mm50°17μm25μm4700c N10000co N

lm luu linear bearing dimension

Nominal shaft diameterLN…LUUBall circuitMajor dimensions and tolerance
drDLBWD1
mmTolerancemmTolerancemmTolerancemmTolerance
8mmLM8LUU480
-10μm
15-13μm450
-300μm
350
-300μm
1.1mm14.3mm
10mmLM10LUU41019-16μm55441.3mm18mm
12mmLM12LUU4122157461.3mm20mm
16mmLM16LUU5162870531.6mm27mm
20mmLM20LUU5200
-12μm
32-19μm80611.6mm30.5mm
25mmLM25LUU625401120
-400μm
820
-400μm
1.85mm38mm
30mmLM30LUU63045123891.85mm43mm
35mmLM35LUU6350
-15μm
52-22μm135992.1mm49mm
40mmLM40LUU640601511212.1mm57mm
50mmLM50LUU650801921482.6mm76.5mm
60mmLM60LUU6600
-20μm
90-25μm2091703.15mm86.5mm

Tips: How to Mount a Linear Ball Bearing

  1. Remove burrs, dirt and scratches on the mounting surface of the specific machine, and on the bearing's part, wash off the anti-rust oil on the surface by using cleaning oil. It’s important to note that the ball bushing could be vulnerable to rust without the protection of anti-rust oil, so it’s advised to apply lubricating oil to the spindle with lower viscosity.
  2. The table needs to be level during mounting, otherwise it will interfere with installation calibration. Gently place the linear ball bearing on the table, and engage the linear guide with the lateral mounting surface by using set screws or any other tools to tighten them up. (Make sure ahead of mounting that screw holes are consistent in case that the accuracy and performance of the units get diminished due to the forcible tightening of the inconsistent bolts. )
  3. Fasten the set screws of the linear bearing from the center to both sides to fit the track with the vertical mounting surface. By so doing, you can sustain the accuracy during operation.
  4. Use a torque wrench to lock every part accordingly , and tighten the set screws on the linear bearing slide rail.
  5. Mount the secondary rail in the same manner, and in some cases, you need to install the sliding seat on the main rail and the secondary rail. Note that after the sliding seat is installed on the linear sliding track, many subsequent accessories cannot be installed due to the limited installation space. Therefore, all the required accessories should be mounted before installing the sliding seat.
  6. Gently place the mobile platform on the sliding seats of the linear bearing main rail and the secondary rail, and then fasten the lateral compression screws on the platform, installation accomplished.

Notes: 

  1. When pressing the linear ball bearing into the bearing pillow block, do not let the bearing outer surface, snap rings and sealing rings collide with the inner surface of the block. To prevent the bearing from deformation, you’d better use built-for-purpose tools and press in the bearing carefully.
  2. Do not put the bearing into the pillow block by twisting or else the bearing will get damaged.
  3. Keep axes parallel when incorporating the shaft into the linear bearing. Do not insert the shaft at a large angle into the bearing, otherwise the bearing will suffer reduction in accuracy and service life or worse still it may even cause steel balls to fall off.