LME 12 & LM 40 Linear Bearings: Sizes & UU Variant Guide
The HI-TEC LME 12 linear bearing features a 12 mm bore, 22 mm outer diameter, and 32 mm width, while the HI-TEC LM 40 linear bearing features a 40 mm bore, 60 mm outer diameter, and 80 mm width. Selecting the correct linear slide component requires verifying these precise boundary dimensions alongside the specific variant designations. Ordering by nominal shaft size alone without verifying series letters often leads to costly assembly fitting errors on industrial machinery.
Linear motion slides used across manufacturing plants in Cikarang, automation workshops in Bandung, and industrial facilities in Surabaya demand exact physical tolerances to preserve smooth movement under load. Standardizing on verified linear bushings prevents unnecessary shaft wear and unexpected machine downtime. This technical guide outlines the exact dimensional profiles for LME 12 and LM 40 linear bearings, explains the protective function of the UU dual-rubber seal variant, and provides direct ordering steps for maintenance engineers across Indonesia.
What are the exact dimensions of LME 12 and LM 40 linear bearings?
HI-TEC LME 12 linear bearings measure 12 mm bore, 22 mm outer diameter, and 32 mm width, whereas LM 40 bearings measure 40 mm bore, 60 mm outer diameter, and 80 mm width. Linear bearings with matching nominal size numbers are not automatically interchangeable, as LM and LME series follow distinct dimensional standards[1][2].
| Part Number | Bore (d) | Outer Diameter (D) | Width (L) | Standard Series | Available Variant |
|---|---|---|---|---|---|
| LME 12 | 12 mm | 22 mm | 32 mm | LME Series | LME 12 UU |
| LM 40 | 40 mm | 60 mm | 80 mm | LM Series | LM 40 UU |
The standard LM series represents the Asian metric specification widely utilized across Japanese and regional equipment, whereas the LME series follows European metric dimensional conventions[1][3]. Because housing bore tolerances, overall lengths, and retaining ring groove locations frequently differ between LM and LME designations, an LME series bearing cannot be substituted for an LM series component without housing modifications[1][2].
Both the LME 12 linear bearing and the LM 40 linear bearing are supplied in the UU configuration. The UU suffix on LME 12 UU and LM 40 UU linear bearings designates dual synthetic rubber seals positioned at both ends of the outer sleeve[1][4]. These lip seals retain internal grease lubrication while blocking fine metal turnings, wood dust, and airborne debris commonly found in Bekasi automotive workshops and Semarang textile mills[1][5].
Parts in this article
| Part (bore x OD x width) | Variants | Price |
|---|---|---|
| LME 12 12 x 22 x 32 mm LME Series | LME 12 UU (2x Rubber Seal) | Ask today's price on WhatsApp |
| LM 40 40 x 60 x 80 mm LM Series | LM 40 UU (2x Rubber Seal) | Ask today's price on WhatsApp |
How do I check pricing and availability for HI-TEC linear bearings?
HI-TEC provides direct ordering support, pricing, and availability confirmation for linear bearings via WhatsApp at +62 823-1004-6527. Purchasing industrial linear motion components requires verifying exact part codes and seal suffixes before submitting a procurement request.
Follow these four steps to confirm stock and place an order:
- Verify your physical dimensions: Measure the shaft diameter, housing bore, and sleeve length using precise vernier calipers, confirming whether your machine slide requires an LME 12 (12x22x32 mm) or LM 40 (40x60x80 mm) envelope.
- Confirm seal specifications: Check if your operating environment requires the double-rubber-sealed UU variant to protect against heavy dust and particulate contamination[1][4].
- Inspect the series prefix: Ensure your existing machine drawing specifies either the European LME standard or Asian LM standard to maintain total interchangeability[1][2].
- Contact direct sales on WhatsApp: Send your part numbers, required quantities, and delivery destination in Jakarta, Medan, or Balikpapan to (+62) 823-1004-6527 for instant support.
Selecting high-grade HI-TEC linear bearings prevents premature raceway scoring, reduces machine maintenance overhead, and ensures reliable operation across demanding industrial production lines.
Need a price? Ask HI-TEC Asia on WhatsApp Send the part number (LME 12, LM 40, or any other) to ask for today's price and availability. Open WhatsApp |
Frequently Asked Questions
What are the exact dimensions of LME 12 and LM 40 linear bearings?
The HI-TEC LME 12 linear bearing has a 12 mm bore, 22 mm outer diameter, and 32 mm width. The HI-TEC LM 40 linear bearing has a 40 mm bore, 60 mm outer diameter, and 80 mm width.
What does the UU variant mean on LME 12 and LM 40 bearings?
The UU suffix designates dual rubber seals fitted to both ends of the linear bearing. These contact seals retain internal lubricant while preventing abrasive dust, dirt, and industrial contaminants from entering the recirculating ball tracks.
Are LM series and LME series linear bearings interchangeable?
No, LM and LME series bearings are not direct drop-in replacements for one another. LM follows Asian metric standards while LME follows European metric standards, meaning outer diameters, lengths, and housing fit tolerances often differ.
How do I check pricing and availability for HI-TEC linear bearings?
You can check current pricing and nationwide stock availability directly by contacting the HI-TEC sales desk on WhatsApp at +62 823-1004-6527 or emailing info@hitecbearings.id.
References
- LME Linear Ball Bearings - Lintec-Linear GmbH. https://lintec-linear.de/en/lme-linear-ball-bearings/ (2025-08-21)
- Linear bearings - LM vs LME type. https://www.tuli-shop.com/blog/linear-bearings-lm-vs-lme-type_1.html (2023-09-20)
- Standard Linear Bearing Lm Series Factory. https://www.jnsnbearing.com/standard-linear-bearing-lm-series.html (2025-04-02)
- https://www.mwtqatar.com. https://www.mwtqatar.com/product/linear-motion-bearings-lmeuu (2026-11-03)
- LME8 UU THK. https://www.tuli-shop.com/us/thk-linear-bearing-lme8-uu-8x16x25mm (2026-10-30)