How does shipping work for orders on MRO Exchange?

Most orders ship within 1–2 business days via UPS. Larger equipment ships via freight carrier, and customers can use the shipping estimator on the product page for a location-specific quote. Local pickup is also available at the Fairfield, IL facility, typically ready within 4 hours.

What payment methods does MRO Exchange accept?

MRO Exchange accepts all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available, with payment due prior to shipment. Custom terms are available for established accounts.

1 6

THK BSF4512E-5.3RR+1255LT Precision Ball Screw 45 mm Diameter x 12 mm Lead x 1255 mm Shaft Length

$549.99 USD

Sale Sold out

✓ 30-day returns on every item — return policy

ConditionSurplus - Untested MPNBSF4512E-5.3RR+1255LT Stock #0326-00625

30-day returns on every item. Photos reflect the actual item’s current condition — see our return policy and condition guide.

Shipping Estimate

⚡ Same-day shipping available — order by 11 am CT ($100 add-on at checkout)

✓ Free domestic UPS Ground shipping — applied automatically at checkout.

Same-Day Available
Real support team
Secure checkout

A precision ball screw assembly from THK, manufactured in Japan and originally supplied to Yamazaki Mazak for the 美濃加茂 (Mino-Kamo) manufacturing facility. The model number BSF4512E-5.3RR+1255LT identifies this as a BSF-series double-nut precision ball screw with a 45 mm shaft diameter, 12 mm lead, right-hand helix, 5.3 circuits, and a shaft length designation of 1255 mm. The BSF series is THK's full-ball type precision ball screw designed for machine tool feed axes requiring high rigidity and accurate positioning. The assembly includes the screw shaft, double nut, and associated hardware packed in original factory packaging with cardboard sectional supports. A separate flexible steel conduit coil is included in the packaging alongside the screw shaft. The item ships from original factory export packaging dated October 2020. The internal reference number on the shipping label reads 151500732409500, with customer reference 34357729940. THK is widely recognized as a premium manufacturer of linear motion components, and the BSF series is commonly specified in CNC machining center feed axes. Made in Japan.

Stock # 0226-625

View full details

Frequently Asked Questions

Shipping & Handling

Most orders ship within 1–2 business days via UPS, but expedited same-day handling is available as an add-on to orders in cart. Larger equipment ships via freight carrier. Use the shipping estimator above for a location-specific quote. Local pickup is also available at our Fairfield, IL facility, typically ready within 4 hours.

Returns & Condition

All items are sold as-described based on the photos and condition listed. If an item arrives differing from its description, it may be eligible for return or refund. See our full condition guide for details on our grading terms.

Payment Options

We accept all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available by selecting "Purchase Order / Wire Transfer" at checkout. Payment is due prior to shipment. Contact us for custom terms on established accounts. Tax exemptions are honored if proper documentation is provided.