UCPG200 Series Tapped Base Pillow Block Bearing Units — G-Type Tapped Base
The UCPG200 series provides a second bilateral tapped base geometry that differs from the UCPW200 in the specific positioning of the mounting holes relative to the housing centreline. The G designation refers to the hole pattern type — the G-type positions holes at a slightly different offset from the housing centreline than the W-type, matching a different set of frame bolt grid conventions. Where UCPW and UCPG differ most visibly is in the J (bolt circle) and G (thread depth) dimensions at equivalent bore sizes. Selecting between UCPW200 and UCPG200 is determined entirely by which hole pattern matches the machine frame's existing bolt positions.
G-Type vs W-Type — Dimensional Differences
At 30 mm bore: UCPW206 has J = 76.2 mm, G depth = 16 mm. UCPG206 has J = 60 mm, G depth = 17 mm. The tighter J spacing of UCPG206 makes it suited to machine frames with closer bolt centre requirements at 30 mm shaft diameter. For the 12–20 mm bore range, UCPG201–204 uses M8 threads at J = 49 mm — slightly closer than UCPW's 50.8 mm — again matching specific frame grid conventions.
Key Features
🔧
G-Type Bilateral Tapped Holes
Offset bilateral hole pattern with tighter J spacing than UCPW200 at equivalent bores. Matches frame designs with closer bolt centre requirements.
⚙
Setscrew Locking Insert
Dual setscrew at 120° — same retention, same shaft tolerance requirements as UCP200.
↔
Wide Inner Ring UC Insert
Same insert bearing as UCPA200 and UCPW200 for equivalent bore sizes. Self-aligning spherical OD, wide inner ring, axial float capacity.
📏
Metric Thread M8 to M16
Compact M8 threads for 12–20 mm bore sizes, stepping to M10, M12, M16 for larger bores.
▭
Compact Housing Body
UCPG housing length (L dimension) is slightly shorter than UCPA200 in some bore ranges.
✅
Standards Compliant
GB, ISO, ANSI, JIS dimensional compliance. Drop-in replacement for UCPG-pattern bearings in existing designs.
Full Dimensional Specifications
| Unit No. | d mm | d inch | H mm | L mm | J mm | A mm | M | G mm | H0 mm | H1 mm | B mm | S mm | Bolt | kg |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UCPG201 / 201-8 | 12 | 1/2 | 33.3 | 70 | 49 | 38 | M8 | 14 | 64 | 11 | 31 | 12.7 | M8 | 0.80 |
| UCPG202 / 202-9/10 | 15 | 9/16~5/8 | 33.3 | 70 | 49 | 38 | M8 | 14 | 64 | 11 | 31 | 12.7 | M8 | 0.79 |
| UCPG203 / 203-11 | 17 | 11/16 | 33.3 | 70 | 49 | 38 | M8 | 14 | 64 | 11 | 31 | 12.7 | M8 | 0.77 |
| UCPG204 / 204-12 | 20 | 3/4 | 33.3 | 70 | 49 | 38 | M8 | 14 | 64 | 11 | 31 | 12.7 | M8 | 0.76 |
| UCPG205 / 205-14~16 | 25 | 7/8~1 | 36.5 | 75 | 50 | 38 | M10 | 15 | 70 | 13 | 34.1 | 14.3 | M10 | 0.91 |
| UCPG206 / 206-17~20 | 30 | 1-1/16~1-1/4 | 42.9 | 85 | 60 | 48 | M10 | 17 | 84 | 13 | 38.1 | 15.9 | M10 | 1.42 |
| UCPG207 / 207-20~23 | 35 | 1-1/4~1-7/16 | 47.6 | 100 | 68 | 48 | M12 | 17 | 93 | 13 | 42.9 | 17.5 | M12 | 1.91 |
| UCPG208 / 208-24/25 | 40 | 1-1/2~1-9/16 | 49.2 | 110 | 78 | 54 | M12 | 20 | 98 | 14 | 49.2 | 19 | M12 | 2.28 |
| UCPG209 / 209-26~28 | 45 | 1-5/8~1-3/4 | 53.9 | 120 | 85 | 54 | M12 | 20 | 106 | 14 | 49.2 | 19 | M12 | 2.61 |
| UCPG210 / 210-30~32 | 50 | 1-7/8~2 | 57.2 | 135 | 95 | 60 | M16 | 21 | 114 | 14 | 51.6 | 19 | M16 | 3.28 |
→ Scroll table horizontally to view all columns. Catalogue dimensions for reference only — engineering drawings required before order.
M = tapped thread size. G = thread depth mm. J = bolt hole centre spacing. Compare J and G dimensions against UCPW200 for same bore before selecting.
Applications
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Close-Centre Frame Designs
Machine frames where the structural section width limits the bolt centre spacing to less than the UCPW200 J dimension at the required bore size.
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European Standard Machine Frames
Equipment built to European machine construction conventions where G-type hole patterns are specified in the OEM design drawings.
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Agricultural Equipment Close-Frame Sections
Implement frames on compact tractors and small self-propelled machines where the frame rail width allows only the closer J spacing of the G-type pattern.
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Light Conveyor & Transfer Systems
Small parts conveyor frames and transfer unit structures where M8–M10 bolt standards and compact J spacings are specified throughout.
📦
Compact Process Equipment Frames
Bearing positions in compact process equipment where the vessel support structure uses close-centre bolt patterns determined by vessel geometry.
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Direct Replacement in G-Pattern Frames
Replacement of worn UCPG-style bearings in existing machines where the frame hole pattern is fixed and the replacement unit must match the G-type geometry exactly.
📦 MOQ & Order Information
- Standard parts: quantity-based MOQ applies per model number.
- High-value / large items: minimum order by USD order value.
- New-client samples: 1–5 pcs available at sample price for first-time buyers.
- Multi-model combines: aggregate orders of USD 1,500 or more across models accepted.
- Special materials / processes: subject to process MOQ — confirm at inquiry stage.
- Retail (1–2 pcs): not accepted. Minimum sample order is 1–5 pcs at sample pricing.
Detailed engineering drawings must be submitted and approved before order confirmation. Catalogue dimensions are for reference only.
Selecting the Right Tapped Base Series
Measure the existing or designed frame bolt hole positions: the J (centre spacing) and the hole offset from housing centreline. Match these against the UCPA200, UCPW200, and UCPG200 specification tables for the required bore size. If none match, use the standard clearance-hole UCP200 with positional adjustment before bolt-down. For tapped base with concentric locking collar instead of setscrew, refer to the UEPA200 series.
Frequently Asked Questions
Difference between UCPG200 and UCPW200?
Both are bilateral tapped base but J spacing differs. UCPG200 has tighter J — select based on frame bolt positions.
Can UCPG200 replace UCPA200?
Only if frame bolt positions match UCPG J and A. Measure frame holes before substituting.
Is the insert the same as UCP200?
Yes. Same UC series wide inner ring setscrew insert — identical load capacity and maintenance.
What is the MOQ?
Standard parts: quantity-based MOQ. Samples 1–5 pcs. Multi-model from USD 1,500. Retail 1–2 pcs not accepted.
Request a Quote for UCPG200 Series
Provide shaft diameter, frame bolt hole spacing (J dimension and offset), thread size, and bore type. Contact us.
