Collection: Bore Reducers
- Bore Reducers (With Images)
- Bore Reducers
13 Products in this selection
- Inch to Metric / Inch to Inch / Metric to Metric. Brass reducing bushes.
- S = Recommended set screw positions.
- C = Recommended position for single set screw fastening.
- T = Recommended position for tangential screw in clamp hub.
Miniature Bearings Australia (Minibearings)
Additional resources:
Additional resources:
A more concise listing may be found on the Smallparts store at Bore Reducers. Smallparts promote the most popular MBA products.
| Outside Diameter (d) | Inside Diameter (D) | Length (L) |
Indicative Image |
|---|---|---|---|
|
Outside Diameter (d)
5.00
mm + 0.03 / - 0.05
(0.197 in.) |
Inside Diameter (D)
3.18
mm + 0.03 / - 0.00 (0.125 in.) |
Length (L)
4.3
mm (0.169 in.) |
|
| Material: Brass End Lip: Yes | |||
|
Part Number: RB-050-032-F-043-B (2 Pcs) Bore Reducers - 5x3.18x4.3 mm - Brass
1 pack (2 pcs) Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$8.00 AUD
Regular price
Unit price
per
Per 2
|
|||
| Outside Diameter (d) | Inside Diameter (D) | Length (L) |
Indicative Image |
|
Outside Diameter (d)
5.00
mm + 0.03 / - 0.05 (0.197 in.) |
Inside Diameter (D)
3.18
mm + 0.03 / - 0.00 (0.125 in.) |
Length (L)
4.3
mm (0.169 in.) |
|
| Material: Brass End Lip: Yes | |||
|
Part Number: RB-050-032-F-043-B (2 Pcs) Bore Reducers - 5x3.18x4.3 mm - Brass
1 pack (2 pcs) Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$8.00 AUD
Regular price
Unit price
per
Per 2
|
|||
|
|||
|
Outside Diameter (d)
5.00
mm + 0.03 / - 0.05
(0.197 in.) |
Inside Diameter (D)
4.00
mm + 0.03 / - 0.00 (0.157 in.) |
Length (L)
4.3
mm (0.169 in.) |
|
| Material: Brass End Lip: Yes | |||
|
Part Number: RB-050-040-F-043-B (3 Pcs) Bore Reducers - 5x4x4.3 mm - Brass
1 pack (3 pcs) Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$8.00 AUD
Regular price
Unit price
per
Per 3
|
|||
|
Outside Diameter (d)
5.00
mm + 0.03 / - 0.05 (0.197 in.) |
Inside Diameter (D)
4.00
mm + 0.03 / - 0.00 (0.157 in.) |
Length (L)
4.3
mm (0.169 in.) |
|
| Material: Brass End Lip: Yes | |||
|
Part Number: RB-050-040-F-043-B (3 Pcs) Bore Reducers - 5x4x4.3 mm - Brass
1 pack (3 pcs) Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$8.00 AUD
Regular price
Unit price
per
Per 3
|
|||
|
|||
|
Outside Diameter (d)
6.00
mm + 0.013 / - 0.025
(0.236 in.) |
Inside Diameter (D)
3.00
mm + 0.025 / 0.000 (0.118 in.) |
Length (L)
9.0
mm (0.354 in.) |
|
| Material: Aluminium Alloy End Lip: No | |||
|
Part Number: RB-060-030-090-A Bore Reducers - 6x3x9 mm - Aluminium Alloy
1 Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$9.00 AUD
Regular price
Unit price
per
Each
|
|||
|
Outside Diameter (d)
6.00
mm + 0.013 / - 0.025 (0.236 in.) |
Inside Diameter (D)
3.00
mm + 0.025 / 0.000 (0.118 in.) |
Length (L)
9.0
mm (0.354 in.) |
|
| Material: Aluminium Alloy End Lip: No | |||
|
Part Number: RB-060-030-090-A Bore Reducers - 6x3x9 mm - Aluminium Alloy
1 Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$9.00 AUD
Regular price
Unit price
per
Each
|
|||
|
|||
|
Outside Diameter (d)
6.35
mm + 0.013 / - 0.000
(0.25 in.) |
Inside Diameter (D)
3.00
mm + 0.025 / 0.000 (0.118 in.) |
Length (L)
12.0
mm (0.472 in.) |
|
| Material: Aluminium Alloy End Lip: No | |||
|
Part Number: RB-064-030-120-A Bore Reducers - 6.35x3x12 mm - Aluminium Alloy
1 Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$6.00 AUD
Regular price
Unit price
per
Each
|
|||
|
Outside Diameter (d)
6.35
mm + 0.013 / - 0.000 (0.25 in.) |
Inside Diameter (D)
3.00
mm + 0.025 / 0.000 (0.118 in.) |
Length (L)
12.0
mm (0.472 in.) |
|
| Material: Aluminium Alloy End Lip: No | |||
|
Part Number: RB-064-030-120-A Bore Reducers - 6.35x3x12 mm - Aluminium Alloy
1 Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$6.00 AUD
Regular price
Unit price
per
Each
|
|||
|
|||
|
Outside Diameter (d)
6.35
mm + 0.013 / - 0.000
(0.25 in.) |
Inside Diameter (D)
3.18
mm + 0.025 / 0.000 (0.125 in.) |
Length (L)
9.5
mm (0.374 in.) |
|
| Material: Aluminium Alloy End Lip: No | |||
|
Part Number: RB-064-032-095-A Bore Reducers - 6.35x3.18x9.5 mm - Aluminium Alloy
1 Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$6.00 AUD
Regular price
Unit price
per
Each
|
|||
|
Outside Diameter (d)
6.35
mm + 0.013 / - 0.000 (0.25 in.) |
Inside Diameter (D)
3.18
mm + 0.025 / 0.000 (0.125 in.) |
Length (L)
9.5
mm (0.374 in.) |
|
| Material: Aluminium Alloy End Lip: No | |||
|
Part Number: RB-064-032-095-A Bore Reducers - 6.35x3.18x9.5 mm - Aluminium Alloy
1 Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$6.00 AUD
Regular price
Unit price
per
Each
|
|||
|
|||
|
Outside Diameter (d)
6.35
mm + 0.013 / - 0.000
(0.25 in.) |
Inside Diameter (D)
4.00
mm + 0.025 / 0.000 (0.157 in.) |
Length (L)
9.0
mm (0.354 in.) |
|
| Material: Aluminium Alloy End Lip: No | |||
|
Part Number: RB-064-040-090-A Bore Reducers - 6.35x4x9 mm - Aluminium Alloy
1 Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$7.00 AUD
Regular price
Unit price
per
Each
|
|||
|
Outside Diameter (d)
6.35
mm + 0.013 / - 0.000 (0.25 in.) |
Inside Diameter (D)
4.00
mm + 0.025 / 0.000 (0.157 in.) |
Length (L)
9.0
mm (0.354 in.) |
|
| Material: Aluminium Alloy End Lip: No | |||
|
Part Number: RB-064-040-090-A Bore Reducers - 6.35x4x9 mm - Aluminium Alloy
1 Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$7.00 AUD
Regular price
Unit price
per
Each
|
|||
|
|||
|
Outside Diameter (d)
6.35
mm + 0.013 / - 0.000
(0.25 in.) |
Inside Diameter (D)
6.00
mm + 0.025 / 0.000 (0.236 in.) |
Length (L)
9.0
mm (0.354 in.) |
|
| Material: Brass End Lip: No | |||
|
Part Number: RB-064-060-090-B Bore Reducers - 6.35x6x9 mm - Brass
5 Available Immediately | Item Discontinued - Up to 5 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$8.00 AUD
Regular price
Unit price
per
Each
|
|||
|
Outside Diameter (d)
6.35
mm + 0.013 / - 0.000 (0.25 in.) |
Inside Diameter (D)
6.00
mm + 0.025 / 0.000 (0.236 in.) |
Length (L)
9.0
mm (0.354 in.) |
|
| Material: Brass End Lip: No | |||
|
Part Number: RB-064-060-090-B Bore Reducers - 6.35x6x9 mm - Brass
5 Available Immediately | Item Discontinued - Up to 5 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$8.00 AUD
Regular price
Unit price
per
Each
|
|||
|
|||
|
Outside Diameter (d)
9.53
mm + 0.013 / - 0.000
(0.375 in.) |
Inside Diameter (D)
6.00
mm + 0.025 / 0.000 (0.236 in.) |
Length (L)
12.0
mm (0.472 in.) |
|
| Material: Aluminium Alloy End Lip: No | |||
|
Part Number: RB-095-060-120-A Bore Reducers - 9.53x6x12 mm - Aluminium Alloy
1 Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$8.00 AUD
Regular price
Unit price
per
Each
|
|||
|
Outside Diameter (d)
9.53
mm + 0.013 / - 0.000 (0.375 in.) |
Inside Diameter (D)
6.00
mm + 0.025 / 0.000 (0.236 in.) |
Length (L)
12.0
mm (0.472 in.) |
|
| Material: Aluminium Alloy End Lip: No | |||
|
Part Number: RB-095-060-120-A Bore Reducers - 9.53x6x12 mm - Aluminium Alloy
1 Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$8.00 AUD
Regular price
Unit price
per
Each
|
|||
|
|||
|
Outside Diameter (d)
9.53
mm + 0.013 / - 0.000
(0.375 in.) |
Inside Diameter (D)
6.00
mm + 0.025 / 0.000 (0.236 in.) |
Length (L)
19.0
mm (0.748 in.) |
|
| Material: Aluminium Alloy End Lip: No | |||
|
Part Number: RB-095-060-190-A Bore Reducers - 9.53x6x19 mm - Aluminium Alloy
1 Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$9.00 AUD
Regular price
Unit price
per
Each
|
|||
|
Outside Diameter (d)
9.53
mm + 0.013 / - 0.000 (0.375 in.) |
Inside Diameter (D)
6.00
mm + 0.025 / 0.000 (0.236 in.) |
Length (L)
19.0
mm (0.748 in.) |
|
| Material: Aluminium Alloy End Lip: No | |||
|
Part Number: RB-095-060-190-A Bore Reducers - 9.53x6x19 mm - Aluminium Alloy
1 Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$9.00 AUD
Regular price
Unit price
per
Each
|
|||
|
|||
|
Outside Diameter (d)
10.00
mm + 0.013 / - 0.025
(0.394 in.) |
Inside Diameter (D)
5.00
mm + 0.025 / 0.000 (0.197 in.) |
Length (L)
12.0
mm (0.472 in.) |
|
| Material: Aluminium Alloy End Lip: No | |||
|
Part Number: RB-100-050-120-A Bore Reducers - 10x5x12 mm - Aluminium Alloy
1 Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$6.00 AUD
Regular price
Unit price
per
Each
|
|||
|
Outside Diameter (d)
10.00
mm + 0.013 / - 0.025 (0.394 in.) |
Inside Diameter (D)
5.00
mm + 0.025 / 0.000 (0.197 in.) |
Length (L)
12.0
mm (0.472 in.) |
|
| Material: Aluminium Alloy End Lip: No | |||
|
Part Number: RB-100-050-120-A Bore Reducers - 10x5x12 mm - Aluminium Alloy
1 Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$6.00 AUD
Regular price
Unit price
per
Each
|
|||
|
|||
|
Outside Diameter (d)
10.00
mm + 0.013 / - 0.025
(0.394 in.) |
Inside Diameter (D)
6.00
mm + 0.025 / 0.000 (0.236 in.) |
Length (L)
12.0
mm (0.472 in.) |
|
| Material: Aluminium Alloy End Lip: No | |||
|
Part Number: RB-100-060-120-A (2 Pcs) Bore Reducers - 10x6x12 mm - Aluminium Alloy
1 pack (2 pcs) Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$14.00 AUD
Regular price
Unit price
per
Per 2
|
|||
|
Outside Diameter (d)
10.00
mm + 0.013 / - 0.025 (0.394 in.) |
Inside Diameter (D)
6.00
mm + 0.025 / 0.000 (0.236 in.) |
Length (L)
12.0
mm (0.472 in.) |
|
| Material: Aluminium Alloy End Lip: No | |||
|
Part Number: RB-100-060-120-A (2 Pcs) Bore Reducers - 10x6x12 mm - Aluminium Alloy
1 pack (2 pcs) Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$14.00 AUD
Regular price
Unit price
per
Per 2
|
|||
|
|||
|
Outside Diameter (d)
10.00
mm + 0.03 / - 0.05
(0.394 in.) |
Inside Diameter (D)
6.35
mm + 0.03 / - 0.00 (0.25 in.) |
Length (L)
8.10
mm (0.319 in.) |
|
| Material: Aluminium Alloy End Lip: Yes | |||
|
Part Number: RB-100-064-F-081-A (3 Pcs) Bore Reducers - 10x6.35x8.1 mm - Aluminium Alloy
1 pack (3 pcs) Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$8.00 AUD
Regular price
Unit price
per
Per 3
|
|||
|
Outside Diameter (d)
10.00
mm + 0.03 / - 0.05 (0.394 in.) |
Inside Diameter (D)
6.35
mm + 0.03 / - 0.00 (0.25 in.) |
Length (L)
8.10
mm (0.319 in.) |
|
| Material: Aluminium Alloy End Lip: Yes | |||
|
Part Number: RB-100-064-F-081-A (3 Pcs) Bore Reducers - 10x6.35x8.1 mm - Aluminium Alloy
1 pack (3 pcs) Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$8.00 AUD
Regular price
Unit price
per
Per 3
|
|||
|
|||
|
Outside Diameter (d)
12.70
mm + 0.013 / - 0.000
(0.5 in.) |
Inside Diameter (D)
9.53
mm + 0.025 / 0.000 (0.375 in.) |
Length (L)
12.7
mm (0.5 in.) |
|
| Material: Aluminium Alloy End Lip: No | |||
|
Part Number: RB-127-095-127-A Bore Reducers - 12.7x9.53x12.7 mm - Aluminium Alloy
1 Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$10.00 AUD
Regular price
Unit price
per
Each
|
|||
|
Outside Diameter (d)
12.70
mm + 0.013 / - 0.000 (0.5 in.) |
Inside Diameter (D)
9.53
mm + 0.025 / 0.000 (0.375 in.) |
Length (L)
12.7
mm (0.5 in.) |
|
| Material: Aluminium Alloy End Lip: No | |||
|
Part Number: RB-127-095-127-A Bore Reducers - 12.7x9.53x12.7 mm - Aluminium Alloy
1 Available Immediately | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price
$10.00 AUD
Regular price
Unit price
per
Each
|
|||
|
|||
