Product Overview
The LMH20LUU Nickel Plating is a long-type flange linear bearing from SIQIANG's H-flange series, featuring a 20 mm inner bore and an 80 mm overall length. Compared with the standard LMH20UU, it provides greater load capacity, enhanced stability, and improved moment resistance. The nickel-plated surface offers superior corrosion protection for humid or light corrosive environments. Its H-shaped flange design enables direct four-bolt mounting without additional housing. Manufactured from high-quality GCr15 bearing steel and hardened to HRC 60–64, it ensures smooth linear motion and long-term durability in continuous industrial applications.
Specifications
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| Type | No. of ball rows | Weight(gf) | Radial (max)(μm) |
Basic Load rating |
ID | ||||
| R.F.L | Q.F.L |
O.F.L |
C (N) | Co (N) | Dr(mm) | (μm) | |||
| LMF 6LUU | LMK 6LUU | LMH 6LUU | 4 | 31 | -3 | 320 | 520 | 6 | |
| LMF 8LUU | LMK 8LUU | LMH 8LUU | 4 | 51 | -3 | 430 | 780 | 8 | |
| LMF 10LUU | LMK 10LUU | LMH 10LUU | 4 | 98 | -4 | 580 | 1100 | 10 | |
| LMF 12LUU | LMK 12LUU | LMH 12LUU | 4 | 110 | -4 | 650 | 1200 | 12 |
0 -10 |
| LMF 13LUU | LMK 13LUU | LMH 13LUU | 4 | 130 | -4 | 810 | 1570 | 13 | |
| LMF 16LUU | LMK 16LUU | LMH 16LUU | 4 | 190 | -6 | 1230 | 2350 | 16 | |
| LMF 20LUU | LMK 20LUU | LMH 20LUU | 5 | 260 | -6 | 1400 | 2750 | 20 | |
| LMF 25LUU | LMK 25LUU | LMH 25LUU | 5 | 540 | -6 | 1560 | 3140 | 25 | |
| LMF 30LUU | LMK 30LUU | LMH 30LUU | 6 | 680 | -8 | 2490 | 5490 | 30 | 0 -12 |
| LMF 35LUU | LMK 35LUU | - | 6 | 1020 | -8 | 2650 | 6470 | 35 | |
| LMF 40LUU | LMK 40LUU | - | 6 | 1570 | -10 | 3430 | 8040 | 40 | 0 -15 |
| LMF 50LUU | LMK 50LUU | - | 6 | 3600 | -13 | 6080 | 15900 | 50 | |
| LMF 60LUU | LMK 60LUU | - | 6 | 4500 | -13 | 7650 | 20000 | 60 | 0 -20 |
Note: Choose nickelge also
*: Standard data
1N=0.102kgf
| Dimensions(mm) | Type | ||||||||||||||
| D | L | Medium Overall Length (mm) |
D1 | H | PCD | K | W | A | F | Verticality(μm) | d1×d2×h | ||||
| (mm) | (μm) | (mm) | (μm) | (mm) | (μm) | ||||||||||
| 12 | 0-13 | 35 | 0-200 | 29 | 28 | 0-0.200 | 5 | 20 | 22 | 18 | 20 | - | 15 | 3.5×6×3.1 | LMF/K/H6LUU |
| 15 | 45 | 37 | 32 | 5 | 24 | 25 | 21 | 24 | - | 15 | 3.5×6×3.1 | LMF/K/H8LUU | |||
| 19 | 0-16 | 55 | 47 | 40 | 6 | 29 | 30 | 25 | 29 | - | 15 | 4.5×7.5×4.1 | LMF/K/H10LUU | ||
| 21 | 57 | 47 | 42 | 6 | 32 | 32 | 27 | 32 | - | 15 | 4.5×7.5×4.1 | LMF/K/H12LUU | |||
| 23 | 61 | - | 43 | 6 | 33 | 34 | 29 | 33 | - | 15 | 4.5×7.5×4.1 | LMF/K/H13LUU | |||
| 28 | 70 | 56 | 48 | 6 | 38 | 37 | 34 | 31 | 22 | 15 | 4.5×7.5×4.1 | LMF/K/H16LUU | |||
| 32 | 0-19 | 80 | 65 | 54 | 8 | 43 | 42 | 38 | 36 | 24 | 20 | 5.5×9×5.1 | LMF/K/H20LUU | ||
| 40 | 112 | 83 | 62 | 8 | 51 | 50 | 46 | 40 | 32 | 20 | 5.5×9×5.1 | LMF/K/H25LUU | |||
| 45 | 123 | 90 | 74 | 10 | 60 | 58 | 51 | 49 | 35 | 20 | 6.6×11×6.1 | LMF/K/H30LUU | |||
| 52 | 0-22 | 135 | 0-300 | - | 82 | 0-0.300 | 10 | 67 | 64 | - | - | - | 25 | 6.6×11×6.1 | LMF/K/H35LUU |
| 60 | 151 | - | 96 | 13 | 78 | 75 | - | - | - | 25 | 9×14×8.1 | LMF/K/H40LUU | |||
| 80 | 192 | - | 116 | 13 | 98 | 92 | - | - | - | 25 | 9×14×8.1 | LMF/K/H50LUU | |||
| 90 | 0-25 | 209 | - | 134 | 18 | 112 | 106 | - | - | - | 25 | 11×17×11.1 | LMF/K/H60LUU | ||
Application Industries
CNC & Machine Tools
X/Y/Z axis guides on milling machines, machining centers, and routers. The long-type body ensures repeatability under continuous reciprocating cycles.
Industrial Automation & Robotics
Pick-and-place gantry systems, servo-driven linear actuators, and Cartesian robot axes in high-cycle automated lines.
3D Printing & Laser Equipment
CoreXY and bed-slinger 3D printers, CO₂ and fiber laser cutting heads. Low friction enables smooth, quiet motion at high traverse speeds.
Packaging Machinery
Filling, sealing, and labelling equipment in food, pharmaceutical, and FMCG production lines. Sealed variant (−AJ) recommended.
Textile & Printing Machinery
Carriage guides on weaving, knitting, and wide-format inkjet printing machines requiring low noise and long maintenance intervals.
Medical & Laboratory Equipment
Diagnostic scanning stages, lab automation platforms, and infusion pump mechanisms requiring smooth, precise, repeatable linear travel.
Commercial Terms
the only place you'll find outside the home
Minimum Order Quantity: 10 pcs (standard models)
Sample Policy: Samples available. Sample cost charged at unit price and credited against first bulk order. Standard samples: 3–5 business days. Custom/OEM samples: 7–10 business days.
Lead Time: 5–7 business days for stocked models; 10–15 business days for large orders or custom variants.
Price Basis: FOB Ningbo / FOB Shanghai
- Payment Terms
- T/T: 30% deposit + 70% balance before shipment (new customers)
- T/T: 30% deposit + 70% against B/L copy (established customers)
- L/C at sight: accepted for orders above USD 5,000
- PayPal / Western Union / MoneyGram: accepted for sample and small express orders
Shipping Methods
- Express courier (DHL / FedEx / UPS): 3–5 days door-to-door
- Air freight: 7–10 days
- Sea freight LCL/FCL: 20–35 days
- We assist with customs documentation and export packing
Packaging & OEM
All packaging options are fully customizable. Private-label and OEM orders are welcome with no minimum design fee.
- Single-unit poly bag with anti-rust paper insert
- Individual paper box - printed with SQ brand or your own logo, part number, and barcode
- Export carton - quantity, dimensions, and markings customizable
- OEM labelling - your brand, model number, country of origin marking
We can also design and produce branded packaging (boxes, cartons, inserts) for resellers and distributors. Please send your logo and requirements via the inquiry form.
After-Sales Support
Warranty
12 months from date of shipment. Defective parts replaced free of charge.
Installation guidance
Assembly video tutorials provided. Written installation guide available on request.
Maintenance advice
Apply anti-rust oil regularly. Replace seals if operating in wet or contaminated environments. Inspect ball retainer for wear every 6 months under continuous-duty conditions.
Spare parts
Replacement components available. Contact our sales team with your original order number.
About SIQIANG
Zhejiang SIQIANG Bearing Manufacturing Co., Ltd, founded in 2007 and located in Lishui, Zhejiang, specializes in the production of linear motion components, including the LMH20LUU Nickel Plating linear bearing. The company operates over 100 CNC machining and grinding centers and holds ISO 9001:2015 certification. Products are widely exported and used in automation, packaging, medical, textile, and industrial machinery applications worldwide.
FAQ
Q: What is the difference between LMH20UU and LMH20LUU?
A: LMH20UU is the standard-length variant (L = 40 mm). LMH20LUU is the long type (L = 80 mm). The longer body provides greater contact area, higher load capacity, and significantly improved moment resistance - ideal for cantilevered loads or applications with off-center forces.
Q: Which shaft should I use with the LMH20LUU?
A: We recommend a Ø20 mm h6 or h7 tolerance precision-ground optical shaft. SIQIANG also supplies matched precision shafts. Contact us for a shaft + bearing kit quote.
Q: Can I order stainless steel or nickel-plated versions?
A: Yes. SUS440C stainless steel and nickel-plated variants are available as standard options. Stainless is recommended for corrosive, humid, or food-contact environments.
Q: Do you accept custom sizes or non-standard tolerances?
A: Yes. Our engineering team can produce non-standard bore sizes, tighter tolerances, custom flange hole patterns, or alternative materials. Please provide your drawing or specification sheet via the inquiry form.
Q: What is your sample turnaround time?
A: Standard stocked models: 3–5 business days. Custom or OEM samples: 7–10 business days. Sample cost is refunded upon first bulk order.
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